Liquefied petroleum gases - Detection of hydrogen sulfide - Lead acetate method (ISO 8819:1993)

Specifies a procedure for the detection of hydrogen sulfide. The lower limit of detectability is 4 mg of hydrogen sulfide in 1 m^3 of gas. Methyl mercaptan, if present, produces a transistory yellow stain on the lead acetate paper which, however, fades completely in less than 5 min. Other sulfur compounds present in the gas do not interfere with the test.

Flüssiggas - Nachweis von Schwefelwasserstoff - Bleiacetatverfahren (ISO 8819:1993)

Diese Internationale Norm beschreibt ein Verfahren zum Nachweis von Schwefel- wasserstoff in Flüssiggasen. Die untere Erfassungsgrenze ist 4 mg Schwefel- wasserstoff je m3 Flüssiggas. Falls Methylmercaptan vorhanden ist, bildet sich auf dem Bleiacetatpapier eine gelbe Verfärbung, die jedoch innerhalb von weniger als 5 min vollständig verschwindet. Andere in Flüssiggas vorhandene Schwefelverbindungen stören den Nachweis nicht.

Gaz de pétrole liquéfiés - Détection de l'acide sulfhydrique - Méthode à l'acétate de plomb (ISO 8819:1993)

La présente Norme internationale prescrit une méthode pour la détection de l'acide sulfhydrique contenu dans les gaz de pétrole liquéfiés. Le seuil de détectabilité est de 4 mg d'acide sulfhydrique dans 1 m3 de gaz de pétrole liquéfié. La présence de méthylmercaptan se traduit par une tache jaune passagère sur le papier réactif à l'acétate de plomb, qui disparaît complètement en moins de 5 min. La présence d'autres composés soufrés dans le gaz de pétrole liquéfié n'a aucune répercussion sur l'essai.  
NOTE 1 Les gaz de pétrole liquéfiés et les produits de leur combustion ne devraient pas être trop corrosifs ni trop réactifs vis-à-vis des matériaux avec lesquels ils se trouvent en contact. Il est donc important de détecter la présence d'acide sulfhydrique, lequel est une substance très réactive. De plus, l'odeur de l'acide sulfhydrique est inacceptable pour certaines utilisations des gaz de pétrole liquéfiés (essence à briquet, par exemple).

Utekočinjeni naftni plin - Detekcija hidrogen sulfida - Metoda s svinčevim acetatom (ISO 8819:1993)

General Information

Status
Published
Publication Date
09-Jan-1995
Current Stage
9093 - Decision to confirm - Review Enquiry
Due Date
27-May-2010
Completion Date
27-May-2010

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Standards Content (sample)

SLOVENSKI STANDARD
SIST EN ISO 8819:1998
01-maj-1998

8WHNRþLQMHQLQDIWQLSOLQ'HWHNFLMDKLGURJHQVXOILGD0HWRGDVVYLQþHYLPDFHWDWRP

,62

Liquefied petroleum gases - Detection of hydrogen sulfide - Lead acetate method (ISO

8819:1993)

Flüssiggas - Nachweis von Schwefelwasserstoff - Bleiacetatverfahren (ISO 8819:1993)

Gaz de pétrole liquéfiés - Détection de l'acide sulfhydrique - Méthode a l'acétate de

plomb (ISO 8819:1993)
Ta slovenski standard je istoveten z: EN ISO 8819:1995
ICS:
75.160.30 Plinska goriva Gaseous fuels
SIST EN ISO 8819:1998 en

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

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SIST EN ISO 8819:1998
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SIST EN ISO 8819:1998
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SIST EN ISO 8819:1998
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SIST EN ISO 8819:1998
INTERNATIONAL Is0
STANDARD
8819
Second edition
1993-I o-01
Liquefied petroleum gases - Detection of
hydrogen sulfide - Lead acetate method
Gaz de p&role liqukfi& - Dbtection de I’acide sulfh ydrique - M&hode
2 I’ac6tate de plomb
Reference number
IS0 8819:1993(E)
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SIST EN ISO 8819:1998
IS0 8819:1993(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
technical committees. Each 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. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) 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 IS0 8819 was prepared by Technical Committee
ISODC 28, Petroleum products and lubricants.
This second edition cancels and replaces the first edition
(IS0 8819:1987), which has been technically revised.
Annex A of this International Standard is for information only.
0 IS0 1993

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

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

mission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
---------------------- Page: 6 ----------------------
SIST EN ISO 8819:1998
INTERNATIONAL STANDARD IS0 8819:1993(E)
Liquefied petroleum gases - Detection of hydrogen
sulfide - Lead acetate 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.

3.2 Lead acetate test paper, either prepared by
1 Scope
dipping strips of smooth filter paper into an aqueous
50 g/l solution of lead acetate, withdrawing the strips
This International Standard specifies a method for the
and removing excess solution from them with clean
detection of hydrogen sulfide in liquefied petroleum
filter paper, or commercially available test paper if it
gases.
is of a type that has been shown to give similar re-
sults to paper prepared as above.
The lower limit of detectability is 4 mg of hydrogen
sulfide in 1 m3 of liquefied petroleum gas. Methyl
The strips of the test paper shall be approximately
mercaptan, if present, produces a transitory yellow
51 mm long by 9,5 mm wide and have a 3,5 mm di-
stain on lead acetate paper which, however, fades
ameter hole near to one end. This hole shall permit
completely in less than 5 min. Other sulfur com-
the strip to hang freely in the test apparatus.
pounds present in liquefied petroleum gas do not in-
terfere with the test.
3.3 Flow indicator, comprising a wet test meter or

NOTE 1 Liquefied petroleum gases and the products of variable area flowmeter, which measures gas flow

their combustion should not be unduly corrosive or reactive
rates in the range of 2 I/min to 3 I/min.
to materials with which
...

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