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Spectrophotometric extractive determination of thiolactams with picric acid and silver

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Spectrophotometric Extractive Determination of Thiolactams with Picric Acid and Silver

The thiolactams (Tpl, Tpr, Tkl, Tel) form with Ag+ and picric acid in solutions a complex with a molar ratio of Ag∶TL∶picric acid=1:1:1, which can be extracted into chloroform. The composition of the solid complexes of thiolactam is 1∶2∶1 (Ag∶TL∶R). The formation of ternary complexes was used in the spectrophotometric determination of thiolactams in a concentration range of 0.2–5.0μg/ml. Lactams do not influence the analytical response. The method is applicable to the determination of the thiolactams in a mixture of caprolactam and in xylene solutions during their synthesis.

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  1. Department of Chemistry, Technical University, Biaiystok, Poland

    Halina Sikorska-Tomicka

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  1. Halina Sikorska-Tomicka
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Sikorska-Tomicka, H. Spectrophotometric extractive determination of thiolactams with picric acid and silver. Mikrochim Acta 86, 479–486 (1985). https://doi.org/10.1007/BF01206917

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  • DOI: https://doi.org/10.1007/BF01206917

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