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  • Title: Thin-layer chromatographic detection of pyrethroid insecticides containing a nitrile group.
    Author: Patil VB, Sevalkar MT, Padalikar SV.
    Journal: Analyst; 1992 Jan; 117(1):75-6. PubMed ID: 1605349.
    Abstract:
    A spray reagent for the detection of pyrethroid insecticides containing a nitrile group by thin-layer chromatography is described. These insecticides on alkaline hydrolysis yield cyanide ion, which in turn reacts with copper(II) acetate and o-tolidine in an acetic acid medium to give a blue colour. Organochlorine, organophosphorus and carbamate insecticides do not interfere. The limit of detection is about 1 microgram.
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