International Standard
ISO 11723:2025
Coal and coke — Determination of arsenic and selenium — Eschka's mixture and hydride generation method
Reference number
ISO 11723:2025
Edition 3
2025-06
© ISO 2026
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Published (Edition 3, 2025)

ISO 11723:2025

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Abstract

This document specifies a method using Eschka's mixture during ashing, extraction of the ash residue with acid, and hydride generation atomic absorption spectrometry or hydride generation atomic fluorescence spectrometry, for the determination of arsenic and selenium in solid mineral fuels.

The method is also applicable for the determination of the analytes by hydride generation inductively coupled plasma atomic emission spectrometry.

General information

  • Status
     : Published
    Publication date
     : 2025-06
    Stage
    : International Standard published [60.60]
  • Edition
     : 3
    Number of pages
     : 6
  • Technical Committee :
    ISO/TC 27/SC 5
    ICS :
    73.040  75.160.10 
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