Abstract

A colorimetric sensor is proposed for determination of thiocyanate based on the destruction of mercury–diphenyl–carbazone complex immobilized in the optically transparent polymethacrylate matrix in the concentration range 0.8– 50mg dm–3 with the detection limit of 0.6mg dm–3 or visual determination with ‘naked eye’ in the concentration above 1mg dm–3. The possibility of application of such sensors for determining thiocyanate in fossil and drill waters is shown.

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