Aromatic hydrocarbons — Determination of sulphur content — Pitt-Ruprecht reduction and spectrophotometric method

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

01-01-1982

Publisher

International Organization for Standardization

Relates to products boiling below 200 °C. Directly applicable to contents of 0.1 mg/kg to 30 mg/kg. Higher contents may be determined by a suitable dilution of the sample. Alkylsulphones, arylsulphonic acids and arylsulphonates give incomplete recovery of sulphur. Reduction of the sulphur compounds to nickel sulphide with Raney nickel. Stripping of the hydrogen sulphide in hydrochloric acid medium and absorption in an alkaline zinc acetate solution. Formation of methylene blue with N,N-dimethyl-p-phenylenediamine sulphate and iron(III) ammonium sulphate. Determination of the absorbance of the blue coloured solution at a wavelength of 667 nm.

Committee	ISO/TC 47
DocumentType	Standard
Pages	6
PublisherName	International Organization for Standardization
Status	Current

Standards	Relationship
BS 135; 458; 805:1977	Similar to

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