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  • Title: Colorimetric detection of cyanide with phenyl thiourea derivatives.
    Author: Lin YS, Zheng JX, Tsui YK, Yen YP.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2011 Sep; 79(5):1552-8. PubMed ID: 21684191.
    Abstract:
    Three structurally simple thiourea derivatives 1-3 were prepared, and their chromogenic behaviors toward various anions were investigated in aqueous solution. Among them 1 showed good sensitivity and selectivity for cyanide ion and also can distinguish it from other anions by different color changes. Besides that, the receptor 1 has a sensitive detection limit (1.27 μM) for cyanide ion accordingly it can be used as a colorimetric sensor for the determination of cyanide ion. The use of the test strip of sensor 1 to detect cyanide ion was also reported.
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