Authored by: Pradyot Patnaik

Handbook of Environmental Analysis

Print publication date:  August  2017
Online publication date:  August  2017

Print ISBN: 9781498745611
eBook ISBN: 9781315151946
Adobe ISBN:


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Thiocyanate is a monovalent polyanion that has the formula SCN. This anion is rarely found in wastewater. However, cyanide-containing waste or water on contact with sulfides can form thiocyanates. On chlorination, the thiocyanate could react with chlorine to form highly toxic cyanogen chloride, CNCl. Thiocyanate in water may be analyzed using (1) colorimetric method and (2) spot test. The latter method is a rapid spot test that can give semiquantitative results. Preserve samples at pH below 2 and refrigerate.

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