Determination of chlorine in silicate rocks

Analytical Chemistry
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In a rapid accurate method for the determination of chlorine in silicate rocks, the rock powder is sintered with a sodium carbonate flux containing zinc oxide and magnesium carbonate. The sinter cake is leached with water, the resulting solution is filtered, and the filtrate is acidified with nitric acid. Chlorine is determined by titrating this solution with mercuric nitrate solution using sodium nitroprusside as the indicator. The titration is made in the dark with a beam of light shining through the solution. The end point of the titration is found by visually comparing the intensity of this beam of light with that of a similar beam of light in a reference solution.
Publication type Article
Publication Subtype Journal Article
Title Determination of chlorine in silicate rocks
Series title Analytical Chemistry
DOI 10.1021/ac60156a044
Volume 31
Issue 12
Year Published 1959
Language English
Publisher ACS Publications
Description 3 p.
First page 2024
Last page 2026
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