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Mehdinia A, Ghassempour A, Rafati H, Heydari R. Determination of N-vinyl-2-pyrrolidone and N-methyl-2-pyrrolidone in drugs using polypyrrole-based headspace solid-phase microextraction and gas chromatography-nitrogen-phosphorous detection. Anal Chim Acta. 2007 Mar 21;587(1):82–8. doi: 10.1016/j.aca.2006.12.052. PMID: 17386757. |