A method is described for the determination of dialkyltin salts leached from PVC into aqueous extracting media. The reagent used, 4-(2-pyridylazo) resorcinol, is stable and water soluble, but forms a chloroform-soluble complex with dialkyltin compounds. Indication of the screening efficiency of EDTA for possible trace metal contaminants is also given.
R. Sawyer, Analyst, 1967, 92, 569 DOI: 10.1039/AN9679200569
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