Six compounds containing the thioglycolic acid group (—NHCOCH2SH) were compared with thionalide for precipitating microgram amounts of lead from acetate-buffered solutions at pH 5. Consistently higher recoveries (ca. 80%) were obtained with 2′-mercapto-4-propylacetanilide than with thionalide (ca. 60%).
J. C. Burridge, I. J. Hewitt and H. A. Anderson, Analyst, 1986, 111, 253 DOI: 10.1039/AN9861100253
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