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SRPS H.B8.017:1981

Sulphuric acid and oleum for industrial use — Determination of lead content — Dithizone photometric method

Oct 28, 1981
Oct 28, 1981
95.99   Withdrawal of Standard   Jan 28, 2013

General information

95.99     Jan 28, 2013

ISS

H047

International Standard

71.060.30  

Serbian  

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Scope

Applicable to the determination of contents exceeding 1 mg/kg. The principle bases on evaporation of the test portion, dissolution in hydrochloric acid and reduction by hydroxylammonium chloride. Formation of complexes of interferring elements with ammonium citrate and potassium cyanide. Extraction of the lead at a pH of between 8.5 and 10 by a solution of dithizone in chloroform. Elimination of excess dithizone by an ammoniacal solution of potassium cyanide. Photometric measurement in chloroform solution at a wavelength of about 520 nm. Has also been approved by the IUPAC.

Life cycle

NOW

WITHDRAWN
SRPS H.B8.017:1981
95.99 Withdrawal of Standard
Jan 28, 2013

Related project

Adopted from ISO 2717:1973