Petroleum products - Determination of lead content of gasoline - Iodine monochloride method (ISO 3830:1993)

Specifies a procedure for total lead as lead alkyls at concentrations between 0,026 g and 1,300 g of lead per litre. The method is not apllicable to gasoline containing manganese anti-knock additives.

Mineralölerzeugnisse - Bestimmung des Bleigehaltes von Ottokraftstoffen - Iodmonochlorid-Verfahren (ISO 3830:1993)

Diese Internationale Norm beschreibt ein Verfahren zur Bestimmung des Gesamt- bleigehaltes von Ottokraftstoffen, die Bleialkyle in Massenkonzentrationen an Blei zwischen 0,026 g/l und 1,300 g/l enthlaten. Diese Internationale Norm ist nicht anwendbar auf Ottokraftstoffe, die Manganverbindungen als Antiklopfadditive enthalten.

Produits pétroliers - Détermination de la teneur en plomb de l'essence - Méthode au monochlorure d'iode (ISO 3830:1993)

La présente Norme internationale prescrit une méthode pour la détermination de la teneur totale en plomb des essences contenant des alkyles de plomb à des concentrations comprises entre 0,026 g et 1,300 g de plomb par litre. La présente Norme internationale n'est pas applicable aux essences contenant des additifs manganiques antidétonants.

Naftni proizvodi - Določevanje svinca v bencinu - Jodna monokloridna metoda (ISO 3830:1993)

General Information

Status
Published
Publication Date
30-Apr-1998
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-May-1998
Due Date
01-May-1998
Completion Date
01-May-1998

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SLOVENSKI STANDARD
SIST EN ISO 3830:1998
01-maj-1998
1DGRPHãþD
SIST EN 23830:1989:2007
1DIWQLSURL]YRGL'RORþHYDQMHVYLQFDYEHQFLQX-RGQDPRQRNORULGQDPHWRGD
,62

Petroleum products - Determination of lead content of gasoline - Iodine monochloride

method (ISO 3830:1993)
Mineralölerzeugnisse - Bestimmung des Bleigehaltes von Ottokraftstoffen -
Iodmonochlorid-Verfahren (ISO 3830:1993)

Produits pétroliers - Détermination de la teneur en plomb de l'essence - Méthode au

monochlorure d'iode (ISO 3830:1993)
Ta slovenski standard je istoveten z: EN ISO 3830:1995
ICS:
75.160.20 7HNRþDJRULYD Liquid fuels
SIST EN ISO 3830:1998 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 3830:1998
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SIST EN ISO 3830:1998
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SIST EN ISO 3830:1998
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SIST EN ISO 3830:1998
INTERNATIONAL
ISO
STANDARD
3830
Third edition
1993-10-01
Petroleum products - Determination of
lead content of gasoline - lodine
monochloride method
Produits p&roliers - Determination de Ia teneur en plomb de
l’essence - Methode au monochlorure d’iode
Reference number
ISO 3830:1993(E)
---------------------- Page: 5 ----------------------
SIST EN ISO 3830:1998
ISO 3830:1993(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide
federation of national Standards bodies (ISO member bodies). The work
of preparing International Standards is normally carried out through ISO
technical committees. Esch member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission
(1 EC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard ISO 3830 was prepared by Technical Committee
ISO/TC 28, Petroleum products and lubricants.
This third edition cancels and replaces the second edition
(ISO 3830:1981), which has been technically revised.
0 ISO 1993

All rights reserved. No part of this publication may be reproduced or utilized in any form or

by any means, electronie or mechanical, including photocopying and microfilm, without per-

mission in writing from the publisher,
International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland
---------------------- Page: 6 ----------------------
SIST EN ISO 3830:1998
INTERNATIONAL STANDARD ISO 3830:1993(E)
Petroleum products - Determination of lead content
of gasoline - lodine monochloride method

WARNING - The use of this International Standard may involve hazardous materials, operations

and equipment. This Standard does not purport to address all of the safety Problems associated

with its use. It is the responsibility of the User of this Standard to establish appropriate safety and

health practices and determine the applicability of regulatory limitations Prior to use,

ISO 3170:1988, Petroleum liquids - Manual
1 Scope
sampling.
This International Standard specifies a method for the
- Automatic pipe-
ISO 3171:1988, Petroleum liquids
determination of total lead content in gasolines con-
line sampling.
taining lead alkyls at concentrations between 0,026 g
and 1,300 g of lead per litre.
ISO 3696:1987, Water for analytical laboratory use -
Specifica tion and test methods.
This International Standard is not applicable to gaso-
line containing manganese anti-knock additives.
ISO 3839: 1978, Petroleum distillates and commercial
alipha tic olefins - Determination of bromine number
- Electrometric method.
2 Normative references
ISO 4788: 1980, Laboratory glassware - Graduated
measuring cylinders.
The following Standards contain provisions which,
through reference in this text, constitute provisions

of this International Standard. At the time of publi- ISO 4800: 1977, Laborstory glassware - Separating

cation, the editions indicated were valid. All Standards funnels and dropping funnels.

are subject to revision, and Parties to agreements
based on this International Standard are encouraged
to investigate the possibility of applying the most re-
cent editions of the Standards indicated below.
3 Principle
Members of IEC and ISO maintain registers of cur-
rently valid International Standards.
A known volume of the test Sample is diluted with
heavy distillate and shaken with aqueous iodine
ISO 385-1: 1984, Laborstory glassware - Burettes -
monochloride reagent. Any tetraalkyl lead compounds
Part 1: General requirements.
present react with the iodine monochloride and are
extracted into the aqueous Phase as the dialkyl lead
ISO 835-1: 1981, Laborstory glassware - Graduated
compounds. The aqueous extract is separated from
pipettes - Part 1: General requirements.
the gasoline and evaporated to low bulk to decom-
pose free iodine monochloride. Any organic matter
, ISO 1042:1983, Laboratory glassware - One-mark
present is removed by Oxidation with nitric acid, which
volumetric flasks.
also serves to convert the dialkyl lead compounds into
inorganic lead compounds. The residue is dissolved in
ISO 1770:1981, Solid-Stern general purpose ther-
water and buffered to pH 5 with sodium
mometers.
acetatelacetic acid buffer. The lead content of the
buffered Solution is determined by titration with
ISO 3007: 1986, Petroleum products - Determination
Na,EDTA using xylenol orange as indicator.
of vapour pressure - Reid method.
---------------------- Page: 7 ----------------------
SIST EN ISO 3830:1998
ISO 3830:1993(E)
Never use rubber bungs to stopper vessels con-
4 Reagents
taining iodine monochloride solutions.
During the analysis described in this International
NOTE 1 The amounts of Kl and Klo3 are calculated to
Standard, use only reagents of recognized analytical
give a slight excess of iodate; if a greater excess is present,
reagent grade and only water complying with the re-
this will lead to precipitation of lead and indifferent end-
quirements of Grade 3 of ISO 3696.
Points in the Na,EDTA titration.
4.1 Nitrit acid, concentrated [SS % (m/m) to
70,5 % (m/m)]. 4.7 Lead nitrate, 0,005 mol/1 Standard Solution.
Weigh, to the nearest 0,001 g, approximately 1,7 g
4.2 Hydrochlorit acid, concentrated
of lead nitrate [Pb(NO,),] that has been dried at
[35,4 % (dm)].
105 “C and allowed to cool in a desiccator. Dissolve
it in water and add IO ml of the concentrated nitric
4.2.1 Hydrochlorit acid Solution (1 + 1).
acid (4.1). Dilute to the mark with water in a
1 000 ml one-mark volumetric flask and Shake thor-
Mix one volume of concentrated hydroc Iloric acid
oughly to mix.
(4.2) with one volume of water.
Calculate the concentration, co, of the lead nitrate
4.3 Ammonia Solution (1 + 1).
Solution, ing to the equation:
in moles per litre, accord
Mix one volume of concentrated ammon a Solution
[35 % (rrUm)] with one volume of water.
33r;223
where m is the mass, in grams, of lead nitrate dis-
4.4 Heavy distillate.
solved.
A straight-run Petroleum distillate having a maximum
bromine number of 1,5 with approximately IO % dis-
4.8 Disodium dihydrogen ethylenediaminetetra-
tilling at 205 “C and 90 % at 240 “C. lt shall also be
acetate, [-CH,N(CH,COOH)CH,COONa]2.2H,O
lead-free, having been, if necessary, previously ex-
(Na,EDTA), 0,005 mol/1 Standard volumetric Solution.
tracted with the iodine monochloride Solution (4.6).
4.5 Sodium acetatelacetic acid buffer Solution 4.8.1 Preparation
(PH 5).
Dissolve approximately 3,75 g of the Na,EDTA in
Dissolve 23,0 g of anhydrous sodium acetate 2 000 ml of water.
(CH,COONa) in approximately 500 ml of water. Using
a burette or graduated pipette, add 7,2 ml of glacial
4.8.2 Standardization
acetic acid. Dilute to the mark with water in a
1 000 ml one-mark volumetric flask and Shake to mix
Using a pipette, transfer 25,0 ml of the Standard lead
thoroughly.
nitrate Solution (4.7) to a 250 ml conical flask. Dilute
to approximately 75 ml with water and add several
4.6 lodine monochloride reagent, 1,O mol/1 sol-
drops of the bromothymol blue indicator Solution
ution.
(4.10). Titrate with the ammonia Solution (4.3) until the
colour of the Solution just changes from yellow to
Dissolve Ill,0 g of potassium iodide (Kl) in approxi-
blue, then add 10 ml of the sodium acetatelacetic acid
mately 400 ml of water. Add 445 ml of concentrated
buffer Solution (4.5) and five drops of the xylenol or-
hydrochloric acid (4.2) and allow to cool to ambient
ange indicator Solution (4.9).
...

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