Dialkyl phthalates at concentrations of 1 to 10 p.p.m. in aqueous solution have been separated and determined by gas-liquid chromatography after extraction into hexane. The column comprised Chromosorb G coated first with 1 per cent. polyvinylpyrrolidone and then with 1 per cent. Carbowax 20M, and the effluent concentrations were monitored with an electron-capture detector.
W. Bunting and E. A. Walker, Analyst, 1967, 92, 575 DOI: 10.1039/AN9679200575
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