EN 12123:2012
(Main)Chemicals used for treatment of water intended for human consumption - Ammonium sulfate
Chemicals used for treatment of water intended for human consumption - Ammonium sulfate
This European Standard is applicable to ammonium sulfate used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements of ammonium sulfate and refers to the corresponding analytical methods. It gives information on its use in water treatment.
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Ammoniumsulfat
Diese Europäische Norm gilt für Ammoniumsulfat zur Aufbereitung von Wasser für den menschlichen Gebrauch. Sie beschreibt die Eigenschaften von Ammoniumsulfat, legt die Anforderungen an Ammoniumsulfat fest und verweist auf die entsprechenden Analysenverfahren. Sie enthält Angaben zu dessen Anwendung in der Wasseraufbereitung.
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Sulfate d'ammonium
La présente Norme européenne s'applique au sulfate d'ammonium utilisé pour le traitement de l'eau destinée à la consommation humaine. Elle décrit les caractéristiques du sulfate d'ammonium, en spécifie les exigences ainsi que les méthodes d'analyse correspondante. Elle donne des informations pour son emploi dans le traitement de l'eau.
Kemikalije, ki se uporabljajo za pripravo pitne vode - Amonijev sulfat
Ta dokument obravnava amonijev sulfat, ki se uporablja za pripravo pitne vode. Opisuje značilnosti amonijevega sulfata ter določa zahteve in ustrezne preskusne metode zanj. Standard podaja informacije za uporabo amonijevega sulfata pri pripravi vode.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kemikalije, ki se uporabljajo za pripravo pitne vode - Amonijev sulfatProdukte zur Aufbereitung von Wasser für den menschlichen Gebrauch - AmmoniumsulfatProduits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Sulfate d'ammoniumChemicals used for treatment of water intended for human consumption - Ammonium sulfate71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 12123:2012SIST EN 12123:2013en,fr,de01-april-2013SIST EN 12123:2013SLOVENSKI
STANDARDSIST EN 12123:20051DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12123
November 2012 ICS 71.100.80 Supersedes EN 12123:2005English Version
Chemicals used for treatment of water intended for human consumption - Ammonium sulfate
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Sulfate d'ammonium
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Ammoniumsulfat This European Standard was approved by CEN on 23 September 2012.
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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12123:2012: ESIST EN 12123:2013
7783-20-2. 3.1.7 EINECS reference 2)
213-984-1. 3.2 Commercial form The product is a powder. 3.3 Physical properties 3.3.1 Appearance The product is a white, fine crystalline powder. 3.3.2 Density The density of the product is 1,8 g/cm³ at 20 °C. 3.3.3 Solubility in water The solubility of the product in water is 767 g/l at 25 °C. 3.3.4 Vapour pressure Not applicable. 3.3.5 Boiling point at 100 kPa 3)
Not applicable. 3.3.6 Crystallisation point The product decomposes above 235 °C. 3.3.7 Specific heat Not known.
1) Chemical Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. 3) 100 kPa = 1 bar. SIST EN 12123:2013
4.4 Chemical parameters The product shall conform to the requirements specified in Table 2.
Table 2 — Chemical parameters
Parameter Limit mg/kg of commercial product Antimony (Sb) max 1 Arsenic (As) max 5 Cadmium (Cd) max 0,5 Chromium (Cr) max 5 Lead (Pb) max 5 Mercury (Hg) max 0,1 Nickel (Ni) max 5 Selenium (Se) max 2 NOTE
Pesticides and polycyclic aromatic hydrocarbons and cyanides (CN-) are not relevant in ammonium sulfate because the raw materials used in the manufacturing are free of them. For parametric values of ammonium sulfate on trace metal content in drinking water, see [1]. 5 Test methods 5.1 Sampling Observe the general recommendations of ISO 3165 and take account of ISO 6206. Prepare the laboratory sample(s) required by the relevant procedure described in ISO 8213. 5.2 Analyses 5.2.1 Main product The content of ammoniacal nitrogen (C1), expressed as mass fraction in %, shall be determined in accordance with ISO 3332 (titrimetric method after distillation). The content of ammonium sulfate ((NH4)2SO4) (C2), expressed as mass fraction in %, is calculated from the formula: 72,412×=CC (1) SIST EN 12123:2013
AAS 193,7 n.a. Sb see 5.2.3.3 Hydride
AAS 217,6 n.a. Cd ISO 6353-1 GM 29see 5.2.3.2 AAS 228,8 air-acetylene Cr ISO 6353-1 GM 29see 5.2.3.2 AAS 357,8 air-acetylene Pb ISO 6353-1 GM 29see 5.2.3.2 AAS 217,0 or 283,3 air-acetylene Ni ISO 6353-1 GM 29see 5.2.3.2 AAS 232,0 oxidising acetylene-air Se see 5.2.3.3 Hydride
AAS 196,0 n.a. Hg in accordance withISO 5993 flameless
AAS 253,6 n.a. AAS = Atomic Absorption Spectroscopy. n.a. = not applicable. SIST EN 12123:2013
Principle The elements cadmium (Cd), chromium (Cr), lead (Pb) and nickel (Ni) are determined using atomic absorption spectrometry with the standard additions technique. 5.2.3.2.2
Reagents All reagents shall be of a recognised analytical grade and the water used shall conform to the grade 3 specified in EN ISO 3696. 5.2.3.2.2.1 Standard solution (100 µg/l Cd, Cr, Pb or Ni) The standard solution shall be freshly prepared on the day of use by individual dilution of a stock solution. This stock solution with a Cd, Cr, Pb or Ni content of at least 1 mg/l shall be made by dilution of standard solutions of Cd, Cr, Pb and Ni which are available from all major suppliers of laboratory chemicals. This stock solution shall be kept in containers of tetrafluoroethylene-hexafluoropropylene copolymer (FEP), polytetrafluoroethylene (PTFE) or polyethylene (PE). The stock solution should not be kept for longer than four weeks. 5.2.3.2.3
Apparatus Ordinary laboratory apparatus and the following: 5.2.3.2.3.1 Atomic absorption spectrometer with the measurement parameters specified in Table 3. 5.2.3.2.4
Procedure 5.2.3.2.4.1 Test portion Weigh 1 g (m) to the nearest 0,01 mg of the laboratory sample into a 100 ml one-mark volumetric flask and make up to the mark at 20 °C with water. 5.2.3.2.4.2 Determination The reference solutions shall be made by spiking the sample with the standard solutions, which contain stepwise increasing contents of the elements to be determined. NOTE The amount of internal standard to be added can be estimated from a prelimin
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