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GB/T 8039-2022Determination of total sulfur of coking benzole products (English PDF)

焦化苯类产品全硫含量的测定方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 12, 2022

Implementation date

October 12, 2022

Scope

GB/T 8039-2022 is the English-translated version of 焦化苯类产品全硫含量的测定方法.

GB/T 8039-2022 is the Chinese national method for determining the total sulfur content of coking benzole products.

It sets out the principles, reagents, instruments, sampling and sample preparation, test procedure, calculation of results and precision of two methods: a spectrophotometric one, in which sulfides are reduced over active nickel, the hydrogen sulfide released in acid solution is absorbed in alkaline zinc acetate and the methylene blue formed with N,N-dimethyl-p-phenylenediamine sulfate and ammonium iron(III) sulfate is read at 667 nm, and an ultraviolet fluorescence one added in this edition.

It applies to coking benzene, coking toluene, coking xylene and intermediate products, with a measuring range of 0.1 mg/kg to 30 mg/kg for method 1 and of 0.1 mg/kg to 100 mg/kg for method 2.

It replaces GB/T 8039-2009 and was issued on 12 October 2022, applying from the same day.

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Document preview — GB/T 8039-2022

National Standard of the People's Republic of China

ICS: 71.080
Classification: G 18
Replacing: GB/T 8039-2009

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and Definitions
4 Sample collection and preparation
5 Method-Spectrophotometry

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

This document replaces GB/T 8039-2009 "Reduction Spectrophotometric Method for Determination of Total Sulfur Content in Coking Benzene Products", and GB/T 8039- Compared with.2009, except for structural adjustment and editorial changes, the main technical changes are as follows.

a) Changed the reagents and materials in Method 1 (see Chapter 5 of 5.2, 2009 edition);

b) Added method 2 UV fluorescence method (see Chapter 6).

1 Scope

This document specifies the principles, reagents, instruments, sampling and preparation of samples, test procedures and results for the determination of total sulfur content in coking benzene products Computation and Precision.

This document applies to the determination of total sulfur content of coking benzene products, including coking benzene, coking toluene, coking xylene and intermediate products.

The measurement range of method 1 is 0.1mg/kg~30mg/kg, and the measurement range of method 2 is 0.1mg/kg~100mg/kg.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 1999 Sampling method for coking oil products

GB/T 6682 Analysis Laboratory Water Specifications and Test Methods

GB/T 8170 Numerical Rounding Rules and Representation and Judgment of Limit Values

GB/T 12807 Laboratory glass instrument indexing pipette

GB/T 12808 Laboratory glass instrument single reticle pipette

3 Terms and Definitions

There are no terms and definitions that need to be defined in this document.

4 Sample collection and preparation

According to the provisions of GB/T 1999.

5 Method-Spectrophotometry

5.1 Principle

The sulfide in the sample is reduced to nickel sulfide with active nickel. Hydrogen sulfide is resolved in acidic solution and absorbed by alkaline zinc acetate. Suck The collected liquid is combined with N,N-dimethyl-p-phenylenediamine sulfate and ammonium iron(III) sulfate to generate methylene blue.

The absorbance of the blue solution was measured at a wavelength of 667 nm.

5.2 Reagents and materials

Unless otherwise specified, the grades of reagents used in this document are of analytical grade, and the water used shall comply with grades 3 and above in GB/T 6682.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

GB/T 47272-2026|GB/T 14327-2025|GB/T 24212-2025|GB/T 24217-2025|GB/T 18255-2022|GB/T 2282-2022

Editions of GB/T 8039

Edition	Title	Revision	Status
GB/T 8039-2022	Determination of total sulfur of coking benzole products	current edition	Current
GB/T 8039-2009	Determination of total sulfur of coking benzole products	previous edition	Superseded

This page sells the current edition, GB/T 8039-2022. Earlier editions are listed for reference only.

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