ISO 9504:1993

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Metallurgical-grade fluorspar — Determination of antimony content — Solvent extraction atomic absorption spectrometric method

Published By	Publication Date	Number of Pages
ISO	1993-04	10

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Categories: 73.080 - Non-metalliferous minerals, ISO

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Description

The principle of the method specified is to decompose a test portion by a mixture of nitric, hydrofluoric and perchloric acids, dissolving the salts in hydrochloric acid after evaporation to fumes of sulfuric acid, extracting the antimony from a dilute hydrochloric acid solution of the decomposed test portion into a solution of tri-n-octylphosphine oxide in 4-methyl-2-pentanone, aspirating the extract into the air/acetylene flame of an atomic absorption spectrometer, and measuring the absorbance at 217,6 nm. Applies to products having an antimony content equal to or greater than 0,001 % (m/m).

Additional information

Published Code	ISO
Published By	International Organization for Standardization
Publication Date	1993-04
Pages Count	10
Language	English
Edition	2
File Size	430.1 KB
ICS Codes	73.080 - Non-metalliferous minerals

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ISO 9504:1993

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