2003•Journal of Nanchang UniversityRequires access

THE DETERMINATION OF TRACE THIOCYANATE BY SPECTROPHOTOMETRY

Cai Ying

Abstract

A procedure is reported for the determination of trace thiocynate based on the catalytic effect of thiocyanate on oxidation of sodium azide by iodine. The reaction is monitored spectrophotometrically at 578nm(the starch has been added). Calibration curves for thiocyanate were linear in the range 0.085-1.19 μg/mL, with the detection limit of 0.0456 μg/mL. The method was applied for the determination of thiocyanate in the different water sample.

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Key concepts: Thiocyanate, Spectrophotometry, Detection limit, Sodium azide, Chemistry, Calibration curve, Sodium thiocyanate, Iodine