Reaffirmed 2023

1. SCOPE

This standard prescribes the method for determination of arsenic and selenium in coal using Eschka’s mixture during ashing; extraction of the ash residue with acid and hydride generation/atomic absorption spectrometry (AAS).

2. REFERENCES

The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication the editions indicated were valid. All standards are subject to revision and parties to agreements based on the subject are encouraged to investigate the possibilities of applying the most recent editions of the standards indicated below:

436 Methods for sampling of coal and coke

(Part 1/Sec 1) : 1964 Sampling of coal Section 1 Manual sampling

(Part 2) : 1965 Sampling of coke

1070 : 1992 Reagent grade water - Specification (third revision)

1350 (Part 1) : Methods of test for coal and coke:

1984 Part 1 Proximate analysis (second revision)

7163: 1989 Potassium iodide, pure and analytical reagent (second revision)