EN 12485:2017
(Main)Chemicals used for treatment of water intended for human consumption - Calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, calcium magnesium carbonate and dolomitic lime - Test methods
Chemicals used for treatment of water intended for human consumption - Calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, calcium magnesium carbonate and dolomitic lime - Test methods
This European Standard specifies the methods used for the chemical analyses and the determination of physical properties of calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, calcium magnesium carbonate and dolomitic lime used to treat water for human consumption.
This document specifies the reference methods and, in certain cases, an alternative method which can be considered to be equivalent.
Any other methods may be used provided they are calibrated, either against the reference methods or against internationally accepted reference materials, in order to demonstrate their equivalence.
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Calciumcarbonat, Weißkalk, halbgebrannter Dolomit, Magnesiumoxid, Calciummagnesiumcarbonat und Dolomitkalk - Prüfverfahren
Diese Europäische Norm legt die Verfahren zur chemischen Analyse und zur Bestimmung von physikalischen Eigenschaften von Calciumcarbonat, Weißkalk, halbgebranntem Dolomit, Magnesiumoxid, Calcium¬magnesiumcarbonat und Dolomitkalk zur Aufbereitung von Wasser für den menschlichen Gebrauch fest.
Dieses Dokument legt die Referenzverfahren und in einigen Fällen ein Alternativverfahren, das als gleichwertig angesehen werden kann, fest.
Andere Verfahren dürfen unter der Voraussetzung angewendet werden, dass diese gegen die Referenzverfahren oder gegen international anerkannte Referenzmaterialien kalibriert sind, um ihre Gleichwertigkeit nachzuweisen.
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Carbonate de calcium, chaux, dolomie semi-calcinée, oxyde de magnésium, carbonate de calcium et de magnésium et chaux dolomitique - Méthodes d'essai
La présente Norme européenne décrit les méthodes utilisées pour réaliser les analyses chimiques et déterminer les propriétés physiques du carbonate de calcium, de la chaux, de la dolomie semi-calcinée, de l’oxyde de magnésium, du carbonate de calcium et de magnésium et de la chaux dolomitique utilisés pour le traitement de l’eau destinée à la consommation humaine.
Le présent document spécifie les méthodes de référence et, dans certains cas, une méthode alternative qui peut être considérée comme étant équivalente.
D’autres méthodes peuvent être utilisées, dans la mesure où elles sont étalonnées, soit par rapport aux méthodes de référence, soit par rapport aux matériaux de référence internationalement reconnus, de manière à démontrer leur équivalence.
Kemikalije, ki se uporabljajo za pripravo pitne vode - Kalcijev karbonat, visoko kalcijevo apno in polžgan dolomit, magnezijev oksid in kalcij-magnezijev karbonat in dolomitno apno - Preskusne metode
Ta evropski standard določa metode, ki se uporabljajo za kemične analize in določanje fizikalnih lastnosti kalcijevega karbonata, visokega kalcijevega apna, polpraženega dolomita, magnezijevega oksida kalcijevega magnezijevega karbonata in dolomitskega apna za čiščenje vode za prehrano ljudi.
V tem dokumentu so opisane referenčne metode in v nekaterih primerih alternativna metoda, s katero lahko pridobimo enakovredne rezultate. V primeru spora se uporabijo le referenčne metode.
Uporabijo se lahko tudi druge metode, če so kalibrirane glede na referenčne metode ali mednarodno sprejete referenčne materiale, s čimer se dokaže njihova enakovrednost.
General Information
Relations
Overview
EN 12485:2017 is the European standard that specifies test methods for chemicals used in the treatment of water intended for human consumption. It covers the chemical analyses and physical property determinations for calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, calcium magnesium carbonate and dolomitic lime. The standard defines reference methods and, where appropriate, alternative methods considered equivalent. Other methods may be used only if calibrated against the reference methods or accepted reference materials.
Key topics and technical requirements
- Scope and general requirements: number of determinations, expression of results, repeatability and reproducibility limits, test reporting.
- Sample preparation: procedures for representative sampling and preparation before analysis.
- Determination of screen oversize for high-calcium lime: air-jet sieving and wet sieving methods.
- Preparation of test solutions: several validated routes including fusion with lithium tetraborate, hydrochloric acid extraction, microwave digestion with nitric acid, and pressurized nitric acid digestion.
- Conventional analytical methods for major and minor constituents, including:
- Determination of free water content
- Loss on ignition at 550 °C
- Carbon dioxide determination
- Residue insoluble in hydrochloric acid
- Water-soluble calcium oxide / calcium hydroxide (reference method) and an alternative sugar-extraction method
- Water-insoluble matter
- Laboratory essentials: specified reagents, glassware, apparatus and calibration/validation requirements for equivalence.
Practical applications
- Quality control of water treatment chemicals used in municipal and industrial drinking water plants.
- Laboratory test procedures for compliance testing of lime, dolomite and magnesium-based reagents.
- Technical basis for supplier specifications and acceptance testing of batches delivered for drinking water treatment.
- Support for regulatory compliance, material certification and safety/data sheets where validated analytical methods are required.
Who should use this standard
- Drinking water treatment plant operators and water utilities
- Analytical and environmental laboratories conducting compositional testing
- Chemical manufacturers and suppliers of calcium carbonate, lime, dolomite and magnesium oxide
- Regulatory authorities and standardization bodies involved in water quality
Related information
- EN 12485:2017 is a CEN-adopted European Standard (superseding EN 12485:2010) and is published via SIST for national use. Where alternative analytical methods are used, they must be calibrated against the reference methods or internationally accepted reference materials to demonstrate equivalence.
Keywords: EN 12485:2017, test methods, calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, dolomitic lime, water treatment chemicals, drinking water, chemical analyses, laboratory methods, quality control.
Frequently Asked Questions
EN 12485:2017 is a standard published by the European Committee for Standardization (CEN). Its full title is "Chemicals used for treatment of water intended for human consumption - Calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, calcium magnesium carbonate and dolomitic lime - Test methods". This standard covers: This European Standard specifies the methods used for the chemical analyses and the determination of physical properties of calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, calcium magnesium carbonate and dolomitic lime used to treat water for human consumption. This document specifies the reference methods and, in certain cases, an alternative method which can be considered to be equivalent. Any other methods may be used provided they are calibrated, either against the reference methods or against internationally accepted reference materials, in order to demonstrate their equivalence.
This European Standard specifies the methods used for the chemical analyses and the determination of physical properties of calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, calcium magnesium carbonate and dolomitic lime used to treat water for human consumption. This document specifies the reference methods and, in certain cases, an alternative method which can be considered to be equivalent. Any other methods may be used provided they are calibrated, either against the reference methods or against internationally accepted reference materials, in order to demonstrate their equivalence.
EN 12485:2017 is classified under the following ICS (International Classification for Standards) categories: 71.100.80 - Chemicals for purification of water. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 12485:2017 has the following relationships with other standards: It is inter standard links to EN 12485:2010, FprEN 12485. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN 12485:2017 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2017
1DGRPHãþD
SIST EN 12485:2011
Kemikalije, ki se uporabljajo za pripravo pitne vode - Kalcijev karbonat, visoko
kalcijevo apno in polžgan dolomit, magnezijev oksid in kalcij-magnezijev karbonat
in dolomitno apno - Preskusne metode
Chemicals used for treatment of water intended for human consumption - Calcium
carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, calcium magnesium
carbonate and dolomitic lime - Test methods
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch -
Calciumcarbonat, Weißkalk, halbgebrannter Dolomit, Magnesiumoxid,
Calciummagnesiumcarbonat und Dolomitkalk - Analytische Verfahren
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation
humaine - Carbonate de calcium, chaux, dolomie semi-calcinée, oxyde de magnésium,
carbonate de calcium et de magnésium et chaux dolomitique - Méthodes d'essai
Ta slovenski standard je istoveten z: EN 12485:2017
ICS:
13.060.20 Pitna voda Drinking water
71.100.80 .HPLNDOLMH]DþLãþHQMHYRGH Chemicals for purification of
water
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 12485
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2017
EUROPÄISCHE NORM
ICS 71.100.80 Supersedes EN 12485:2010
English Version
Chemicals used for treatment of water intended for human
consumption - Calcium carbonate, high-calcium lime, half-
burnt dolomite, magnesium oxide, calcium magnesium
carbonate and dolomitic lime - Test methods
Produits chimiques utilisés pour le traitement de l'eau Produkte zur Aufbereitung von Wasser für den
destinée à la consommation humaine - Carbonate de menschlichen Gebrauch - Calciumcarbonat, Weißkalk,
calcium, chaux, dolomie semi-calcinée, oxyde de halbgebrannter Dolomit, Magnesiumoxid,
magnésium, carbonate de calcium et de magnésium et Calciummagnesiumcarbonat und Dolomitkalk -
chaux dolomitique - Méthodes d'essai Prüfverfahren
This European Standard was approved by CEN on 24 April 2017.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12485:2017 E
worldwide for CEN national Members.
Contents Page
European foreword . 6
1 Scope . 7
2 Normative references . 7
3 General requirements . 7
3.1 Number of determinations . 7
3.2 Methods for analysis . 8
3.3 Sample preparation . 10
3.4 Reagents . 10
3.5 Glassware . 11
3.6 Expression of results . 11
3.7 Repeatability and reproducibility limits . 12
3.8 Test report . 12
4 Determination of screen oversize of high-calcium lime . 12
4.1 Air-jet sieving method . 12
4.1.1 General . 12
4.1.2 Apparatus . 12
4.1.3 Procedure. 13
4.1.4 Expression of results . 14
4.2 Wet sieving method . 14
4.2.1 General . 14
4.2.2 Apparatus . 14
4.2.3 Procedure. 15
4.2.4 Expression of results . 15
5 Preparation of test solutions . 15
5.1 Fusion with lithium tetraborate . 15
5.1.1 General . 15
5.1.2 Principle . 16
5.1.3 Reagents . 16
5.1.4 Apparatus . 16
5.1.5 Procedure. 16
5.2 Extraction with hydrochloric acid . 16
5.2.1 General . 16
5.2.2 Principle . 16
5.2.3 Reagents . 16
5.2.4 Apparatus . 17
5.2.5 Procedure. 17
5.3 Microwave digestion with nitric acid . 17
5.3.1 General . 17
5.3.2 Principle . 17
5.3.3 Reagents . 17
5.3.4 Apparatus . 17
5.3.5 Procedure. 18
5.4 Pressurized digestion with nitric acid . 18
5.4.1 General . 18
5.4.2 Principle . 18
5.4.3 Reagent . 18
5.4.4 Apparatus . 18
5.4.5 Procedure . 18
6 Conventional methods of determining major and minor constituents . 19
6.1 Determination of free water . 19
6.1.1 General . 19
6.1.2 Principle . 19
6.1.3 Apparatus . 19
6.1.4 Procedure . 19
6.1.5 Expression of results . 20
6.2 Loss on ignition at 550 °C . 20
6.2.1 General . 20
6.2.2 Principle . 20
6.2.3 Apparatus . 20
6.2.4 Procedure . 20
6.2.5 Expression of results . 20
6.3 Determination of carbon dioxide. 21
6.3.1 General . 21
6.3.2 Principle . 21
6.3.3 Apparatus . 21
6.3.4 Procedure . 21
6.3.5 Expression of results . 21
6.4 Determination of residue insoluble in hydrochloric acid . 22
6.4.1 General . 22
6.4.2 Principle . 22
6.4.3 Reagents . 22
6.4.4 Apparatus . 22
6.4.5 Procedure . 22
6.4.6 Expression of results . 22
6.5 Determination of content of water soluble calcium oxide or calcium hydroxide
(reference method) . 23
6.5.1 General . 23
6.5.2 Principle . 23
6.5.3 Reagents . 23
6.5.4 Apparatus . 23
6.5.5 Procedure . 23
6.5.6 Expression of results . 24
6.6 Determination of sugar soluble calcium oxide or calcium hydroxide (alternative
method) . 25
6.6.1 General . 25
6.6.2 Principle . 25
6.6.3 Reagents . 25
6.6.4 Apparatus . 25
6.6.5 Procedure . 26
6.6.6 Sugar extraction . 26
6.6.7 Determination. 26
6.6.8 Expression of results . 26
6.7 Water-insoluble matter . 26
6.7.1 General . 26
6.7.2 Principle . 27
6.7.3 Apparatus . 27
6.7.4 Procedure . 27
6.7.5 Expression of results . 27
6.8 Determination of free CaO . 27
6.8.1 General . 27
6.8.2 Principle . 28
6.8.3 Reagents . 28
6.8.4 Apparatus . 28
6.8.5 Procedure. 28
6.8.6 Expression of results . 28
6.9 Determination of calcium oxide and magnesium oxide . 28
6.9.1 General . 28
6.9.2 Principle . 29
6.9.3 Reagents . 29
6.9.4 Apparatus . 30
6.9.5 Procedure. 30
6.9.6 Expression of results . 31
6.10 Determination of sulfate. 31
6.10.1 General . 31
6.10.2 Principle . 31
6.10.3 Reagents . 32
6.10.4 Apparatus . 32
6.10.5 Procedure. 32
6.10.6 Expression of results . 33
6.11 Determination of solubility index by conductivity . 33
6.11.1 General . 33
6.11.2 Principle . 33
6.11.3 Reagents . 33
6.11.4 Apparatus . 34
6.11.5 Procedure. 34
6.11.6 Evaluation . 35
6.12 Calculation of the composition of a commercial product . 36
6.12.1 General . 36
6.12.2 Calculations . 36
7 Determination of constituents by modern techniques . 38
7.1 Determination of minor constituents by AAS flame technique . 38
7.1.1 General . 38
7.1.2 Reagents . 39
7.1.3 Apparatus . 40
7.1.4 Interferences . 40
7.1.5 Procedure. 40
7.1.6 Calculation and expression of results . 41
7.2 Determination of major and minor constituents by ICP-OES. 42
7.2.1 General . 42
7.2.2 Reagents . 43
7.2.3 Apparatus . 43
7.2.4 Spectral interferences . 44
7.2.5 Non spectral interferences . 45
7.2.6 Methods of eliminating or reducing interferences . 45
7.2.7 Procedure. 45
7.2.8 Calculation and expression of results . 46
8 Determination of chemical parameters . 47
8.1 Determination of lead, cadmium, chromium and nickel by AAS graphite tube
technique. 47
8.1.1 General . 47
8.1.2 Reagents . 48
8.1.3 Apparatus . 49
8.1.4 Interferences . 49
8.1.5 Procedure . 50
8.1.6 Calculation and expression of results . 50
8.2 Determination of lead, cadmium, chromium and nickel by ICP-OES . 53
8.2.1 General . 53
8.2.2 Reagents . 53
8.2.3 Apparatus . 54
8.2.4 Spectral interferences . 54
8.2.5 Non spectral interferences . 55
8.2.6 Methods of eliminating or reducing interferences . 55
8.2.7 Procedure . 55
8.2.8 Calculation and expression of results . 56
8.3 Determination of arsenic, antimony and selenium by AAS hydride technique . 57
8.3.1 General . 57
8.3.2 Reagents . 57
8.3.3 Apparatus . 58
8.3.4 Interferences . 58
8.3.5 Procedure . 59
8.3.6 Expression of results . 60
8.4 Determination of mercury by cold-vapour technique . 60
8.4.1 General . 60
8.4.2 Reagents . 61
8.4.3 Apparatus . 61
8.4.4 Interferences . 62
8.4.5 Procedure . 62
8.4.6 Expression of results . 63
Annex A (informative) Analytical scheme . 64
Annex B (informative) Precision data for the test methods . 71
Bibliography . 73
European foreword
This document (EN 12485:2017) has been prepared by Technical Committee CEN/TC 164 “Water
supply”, the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by January 2018, and conflicting national standards shall
be withdrawn at the latest by January 2018.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12485:2010.
Significant technical differences between this edition and EN 12485:2010 are as follows:
a) addition of test procedures for dolomitic lime (see 3.2);
b) the description for air-jet sieving was revised (see 4.1);
c) update of abbreviations to be in accordance with ISO 80000-9 Quantities and units – Part 9:
Physical chemistry and molecular physics.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
1 Scope
This European Standard specifies the methods used for the chemical analyses and the determination of
physical properties of calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide,
calcium magnesium carbonate and dolomitic lime used to treat water for human consumption.
This document specifies the reference methods and, in certain cases, an alternative method which can
be considered to be equivalent.
Any other methods may be used provided they are calibrated, either against the reference methods or
against internationally accepted reference materials, in order to demonstrate their equivalence.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 459-2, Building lime - Part 2: Test methods
EN 1017, Chemicals used for treatment of water intended for human consumption - Half-burnt dolomite
EN 1018, Chemicals used for treatment of water intended for human consumption — Calcium carbonate
EN 12518, Chemicals used for treatment of water intended for human consumption - High-calcium lime
EN 16003, Chemicals used for treatment of water intended for human consumption - Calcium magnesium
carbonate
EN 16004, Chemicals used for treatment of water intended for human consumption - Magnesium oxide
EN 16409, Chemicals used for treatment of water intended for human consumption - Dolomitic lime
EN ISO 3696:1995, Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)
ISO 3165, Sampling of chemical products for industrial use — Safety in sampling
ISO 4793:1980, Laboratory sintered (fritted) filters — Porosity grading, classification and designation
3 General requirements
3.1 Number of determinations
Two analyses shall be carried out to determine the various constituents (see Clause 5 to Clause 8; see
also 3.6).
3.2 Methods for analysis
The methods to be used for the analysis of half-burnt dolomite, calcium carbonate, high calcium lime,
magnesium oxide, calcium magnesium carbonate and dolomitic lime and the principle of each method
are listed in Table 1. Schematic diagrams of the analyses are given in Annex A (Figures A.1 to A.7).
The requirement values for free MgO and free Mg(OH) in half-burnt dolomite shall be expressed as free
MgO in accordance with EN 1017. The same requirement is related to free CaO. The requirement value
for MgO in magnesium oxide shall be expressed as MgO in dry substance in accordance with EN 16004.
Therefore, the analysis of half-burnt dolomite and magnesium oxide shall be performed on a sample
which is bound-water free. Before starting the chemical analysis, the loss on ignition at 550 °C shall be
determined as described in 6.2. The analysis itself shall be performed on the material obtained after the
determination of the loss on ignition.
The requirement values for calcium carbonate, hydrated lime and calcium magnesium carbonate shall
be expressed in dry substance in accordance with EN 1018, EN 12518 and EN 16003. Therefore, the
analysis of these products shall be performed on a sample which has been dried in accordance with the
procedure described in 6.1.
For the determination of the water-soluble content of high-calcium lime, the method in 6.5 is
considered as the reference method. The sugar method described in 6.6 can be used as an alternative
method if it is demonstrated that the results obtained with this method are equivalent to those of the
reference method.
The requirement values for CaO and MgO in dolomitic lime shall be expressed in accordance with
EN 16409. The requirement value for CaO and MgO in calcium magnesium dioxide shall be expressed as
CaO and MgO in bound-water free substance and for CaO and MgO in calcium magnesium dihydroxide
oxide shall be expressed as CaO and MgO in dry and bound-water free substance. Therefore, the
analysis of calcium magnesium dihydroxide oxide shall be performed on a sample which has been dried
in accordance with the procedure described in 6.1.
Table 1 — Methods for analysis
Determination Method Principle Standard
Screen oversize 4.1 Air-jet sieving EN 12518, EN 16409
4.2 Wet sieving EN 12518
Free water 6.1 Gravimetry EN 1018, EN 12518,
EN 16003, EN 16409
Loss on ignition at 550 °C 6.2 Gravimetry EN 1017, EN 12518,
EN 16004, EN 16409
Carbon dioxide 6.3 Gravimetry EN 1017, EN 12518,
EN 16004, EN 16409
Residue insoluble in 6.4 Acidimetry, gravimetry EN 1018, EN 16003
hydrochloric acid
Water-soluble calcium oxide or 6.5 Acidimetric titration EN 12518
calcium hydroxide
Sugar-soluble calcium oxide or 6.6 Acidimetric titration EN 12518
calcium hydroxide
Water-insoluble constituents 6.7 Gravimetry EN 12518
Free calcium oxide 6.8 Extraction, acidimetric EN 1017, EN 16004
titration
Calcium oxide and magnesium 6.9 Complexometric titration EN 1017, EN 1018,
oxide EN 16003, EN 16004,
EN 16409
Sulfate 6.10 Gravimetry EN 1017
Solubility index 6.11 Conductivity EN 12518
Magnesium 7.1 AAS (flame) EN 1017, EN 1018,
EN 16003, EN 16409,
or or
EN 16004
7.2 ICP-OES
Silicon, Aluminium,Iron 7.1 AAS (flame) EN 1017, EN 12518,
EN 16003, EN 16004,
or or
EN 16409
7.2 ICP-OES
Manganese 7.2 ICP-OES EN 12518, EN 16409
Sulfur 7.2 ICP-OES EN 1017
Lead, Cadmium, Chromium, 8.1 AAS (flameless) EN 1017, EN 1018,
Nickel EN 12518, EN 16003,
or or
EN 16004, EN 16409
8.2 ICP-OES
Arsenic, Antimony, Selenium 8.3 AAS (hydride) EN 1017, EN 1018,
EN 12518, EN 16003,
EN 16004, EN 16409
Determination Method Principle Standard
Mercury 8.4 AAS (cold-vapour EN 1017, EN 1018,
technique) EN 12518, EN 16003,
EN 16004, EN 16409
3.3 Sample preparation
The general recommendations specified in ISO 3165 shall be observed when sampling. Sampling shall
be performed in accordance with EN 459-2. For products less than 6 mm grain size, the size of the
sample shall be 1 l.
Before performing the chemical analyses, the size of the sample shall be reduced by using a sample
divider and/or by dividing it into four parts in order to obtain a suitable subsample. The coarse-grain
material in this sample shall be reduced to a size of less than 0,2 mm before performing the chemical
analysis.
When sampling milk of lime, the material from which the sample is to be taken shall be thoroughly
mixed with an electrically driven stirrer of adequate power. The milk of lime shall be dried before being
analysed chemically as described in 6.1.
Since the subsamples under examination are altered by the absorption of moisture and carbon dioxide,
their exposure to air shall be minimized. They shall therefore be transported and stored in air-tight
containers and all the handling shall be carried out as quickly as possible.
3.4 Reagents
All reagents shall be of a recognized analytical grade appropriate for the method being used. The water
used shall conform to grade 3 in accordance with EN ISO 3696:1995 unless otherwise specified in the
method. The concentration of the analytes in the water and reagents shall be negligible compared with
the lowest concentration to be determined.
The concentrated liquids used for the reagents in this standard have the following densities (ρ)
(in grams per millilitre at 20 °C):
— hydrochloric acid 1,16 to 1,19;
— nitric acid 1,40 to 1,42;
— ammonium hydroxide solution 0,88 to 0,91;
— triethanolamine 1,12.
Dilutions are specified as the sum of the volumes. Thus, (1 + 2) dilute hydrochloric acid means 1 part by
volume of concentrated hydrochloric acid mixed with 2 parts by volume of water.
The concentrations of reference and standard volumetric solutions are specified as amount-of-
substance concentrations, c (mol/l), while those of stock and standard solutions are specified as
concentrations by mass, c (g/l or mg/l).
Suitable element solutions for atomic absorption spectroscopy (AAS) and for optical emission
spectroscopy by inductively coupled plasma (ICP-OES) are commercially available and can be used as
stock solutions. They shall be prepared for the purposes of analysis in accordance with the
manufacturer’s instructions. The appropriate element standard solutions are prepared in accordance
with the instructions given in this European Standard.
This European Standard makes no stipulations relating to the shelf life of stock, standard and reference
solutions. In the case of stock solutions having an element concentration of 1 g/l, the manufacturer
generally specifies a shelf life of one year. It is advisable to check the calibration solutions regularly.
3.5 Glassware
Glass containers and pipettes shall be cleaned with hot dilute nitric acid immediately before use and
then rinse with water. If determining trace elements rinse with grade 2 water.
3.6 Expression of results
The analytical results for the major and minor constituents shall be r
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La norme EN 12485:2017 établit un cadre rigoureux pour l'analyse chimique et la détermination des propriétés physiques de divers composés utilisés dans le traitement de l'eau destinée à la consommation humaine. Ses principaux éléments incluent le carbonate de calcium, la chaux à haute teneur en calcium, le dolomite calcinée, l'oxyde de magnésium, le carbonate de calcium et de magnésium, ainsi que la chaux dolomitique. L'un des points forts de cette norme est la précision qu'elle apporte à la méthode d'évaluation des composants chimiques, garantissant ainsi la sécurité de l'eau potable. En spécifiant des méthodes de référence claires, la norme EN 12485:2017 assure une uniformité dans les pratiques d'analyse au sein de l'industrie, ce qui est essentiel pour respecter les régulations européennes. En outre, la flexibilité offerte par l'acceptation de méthodes alternatives, à condition qu'elles soient calibrées de manière appropriée, représente un atout majeur pour les laboratoires souhaitant innover tout en maintenant des standards de qualité. La pertinence de la norme est accentuée par son alignement avec les attentes des consommateurs et des autorités sanitaires en matière de sécurité de l'eau potable. En garantissant que les méthodes analytiques respectent des critères stricts, cette norme contribue à renforcer la confiance du public dans la qualité de l'eau. De plus, en facilitant l'usage de matériaux de référence reconnus internationalement, la norme favorise l'harmonisation des pratiques au-delà des frontières, ce qui est crucial pour une approche globale de la gestion de l'eau. En somme, la norme EN 12485:2017 s'impose comme un document essentiel pour les professionnels du traitement de l'eau, promouvant non seulement des pratiques de test fiables, mais aussi un effort collectif pour assurer la salubrité de l'eau destinée à la consommation humaine.
표준 EN 12485:2017은 인간 소비를 위한 물의 처리에 사용되는 화학 물질에 대한 매우 중요한 문서로, 특히 고칼슘 석회, 반소석회, 마그네슘 산화물, 칼슘 마그네슘 탄산염 및 돌로마이트 석회 등 여러 화학 물질의 시험 방법을 규정하고 있습니다. 이 표준의 범위는 이러한 화학 물질의 화학 분석 및 물리적 특성 결정에 필요한 방법을 명확히 정의합니다. 이 표준의 강점 중 하나는 명확한 참조 방법을 제공한다는 점입니다. 이를 통해 모든 실험실이 일관된 기준에 따라 측정할 수 있도록 하여, 품질 관리와 안전성을 크게 향상시킵니다. 특히, 경우에 따라 대체 방법을 사용할 수 있도록 허용함으로써, 다양한 실험실 환경에서 유연성을 제공합니다. 이러한 유연성은 학계 및 산업계에서의 연구와 개발에 중요한 요소로 작용할 수 있습니다. 또한, EN 12485:2017은 인간 소비를 위한 물 처리에 관련된 화학 물질의 표준을 국제적으로 통일시키는 데 기여함으로써, 다양한 국가 간의 협력과 무역에 긍정적인 영향을 미칠 수 있습니다. 국제적으로 인정된 기준에 따라 보정된 방법을 사용할 수 있도록 요구함으로써, 실험의 신뢰성과 결과의 함수성을 보장하는 데 도움을 줍니다. 결론적으로, EN 12485:2017은 인간 소비에 적합한 물의 처리를 위한 화학 물질에 대한 포괄적이고 명확한 시험 방법을 제시하여, 안전하고 효과적인 수처리의 기반을 마련하고 있습니다. 이 표준은 환경 보호와 공공의 건강을 지키는 데 기여하는 중요한 역할을 합니다.
Die europäische Norm EN 12485:2017 legt die Testmethoden für chemische Analysen und die Bestimmung physikalischer Eigenschaften von Calciumcarbonat, hochkalziumhaltigem Kalk, branntkalkhaltigem Dolomit, Magnesiumoxid, Calcium-Magnesium-Carbonat und dolomitischem Kalk fest, die zur Behandlung von Wasser für den menschlichen Verzehr eingesetzt werden. Die Norm stellt sicher, dass die verwendeten Chemikalien hohen Qualitätsstandards entsprechen und sicher sind. Ein wesentlicher Bestandteil dieser Norm ist der Umfang, der sich auf die Methoden zur Analyse von Chemikalien konzentriert, die für die Wasseraufbereitung unerlässlich sind. Durch die Definition von Referenzmethoden und in bestimmten Fällen von als äquivalent geltenden Alternativmethoden wird die Verlässlichkeit und die Vergleichbarkeit der Ergebnisse gewährleistet. Dies ist besonders wichtig in einem Bereich, in dem die Wasserqualität für die öffentliche Gesundheit von entscheidender Bedeutung ist. Die Stärken der EN 12485:2017 liegen in ihrer umfassenden Herangehensweise an die Normierung der Testmethoden. Es wird nicht nur auf hohe Standards geachtet, sondern auch die Flexibilität gewahrt, indem andere kalibrierte Methoden genutzt werden können, sofern sie gegen die Referenzmethoden oder international akzeptierte Referenzmaterialien kalibriert sind. Diese Flexibilität unterstützt die Anwendung der Norm in verschiedenen europäischen Ländern und fördert die Einhaltung einheitlicher Standards. Die Relevanz der Norm ist unbestreitbar, da die Qualität des Trinkwassers eine der grundlegendsten Anforderungen an die öffentliche Gesundheit darstellt. Durch die Festlegung von Standardmethoden zur Analyse der Chemikalien, die zur Behandlung von Trinkwasser eingesetzt werden, trägt die EN 12485:2017 direkt zur Sicherstellung der Wasserqualität bei und schafft Vertrauen in die öffentlichen Wasserversorgungsdienste. In einer Zeit, in der der Zugang zu reinem und sicherem Trinkwasser von großer Bedeutung ist, hat diese Norm sowohl für Hersteller als auch für Aufsichtsbehörden eine hohe Priorität. Insgesamt bietet die EN 12485:2017 eine detaillierte und anpassungsfähige Grundlage für die chemische Analyse von Wasserbehandlungsprodukten und unterstützt die Gewährleistung sicherer und qualitativ hochwertiger Wasserressourcen für die menschliche Nutzung.
SIST EN 12485:2017は、人が消費するための水の処理に使用される化学物質に関する標準であり、主にカルシウム炭酸塩、高カルシウム石灰、半焼ドロマイト、酸化マグネシウム、カルシウムマグネシウム炭酸塩およびドロマイト石灰の化学分析手法と物理的特性の評価方法を詳細に規定しています。この標準は、適切な水質管理のための重要な基準を提供するものであり、治療プロセスにおける化学物質の使用の透明性と信頼性を確保します。 この標準の強みは、特定の参照方法に加えて、同等とみなされることができる代替方法を提示している点です。これにより、異なる環境や条件下での分析に柔軟に対応できるだけでなく、国際的に受け入れられている参照材料に対するキャリブレーションを通じて多様なアプローチを可能にします。この特性は、様々な地域における水処理業界のニーズに適応する能力を高めています。 SIST EN 12485:2017は、消費者の健康を守る上での重要性から、飲料水の安全性確保に関連した産業においても極めて関連性が高い標準です。この標準に準拠することにより、水処理業者は高水準の品質管理を維持し、市場での競争力を高めることができます。これにより、消費者は安心して水を利用できるようになります。 総じて、SIST EN 12485:2017は、水処理における化学物質の取り扱いを標準化することで、業界全体の信頼性と効率性を向上させる重要な役割を果たしています。
The EN 12485:2017 standard presents a comprehensive framework for evaluating the chemical properties and physical characteristics of essential substances used in the treatment of water intended for human consumption. Covering a spectrum of materials-including calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, calcium magnesium carbonate, and dolomitic lime-this standard is pivotal for ensuring the safety and quality of drinking water. One of the significant strengths of the EN 12485:2017 standard is its specification of reference methods, which provides a robust basis for consistency and reliability in chemical analysis. By including alternative methods that can be deemed equivalent, the standard accommodates diverse laboratory capabilities and fosters innovation while maintaining the integrity of water treatment processes. The relevance of this standard cannot be overstated, as it aligns with the increasing global focus on water quality and public health. By establishing rigorous testing protocols, EN 12485:2017 enhances confidence in the treatment methods for water intended for human consumption, ensuring that these chemicals meet required safety and effectiveness benchmarks. Furthermore, the standard's provision for the calibration of alternative methods against reference methods underscores its commitment to quality assurance. This flexibility allows for advancements in testing technology without compromising the safety standards necessary for drinking water, thereby promoting a progressive and sustainable approach to water treatment. Overall, the EN 12485:2017 standard serves as a critical resource for manufacturers, regulators, and laboratories involved in water treatment, safeguarding public health through its meticulous approach to the chemical analyses of key treatment agents.
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