Abstract
A new procedure has been developed for the assay of 2,2′-dichloro-4,4′-methylenedianiline (MOCA) using high-performance liquid chromatography with diode array detector. MOCA was sampled from workplace air and derivative before determination using 3,5-dinitrobenzoyl chloride. The determination was carried out in the reverse-phase system (mobile phase: acetonitrile: water) using an Ultra C18 column. The measurement range was 2–40 µg/m3 for a 100 dm3 air sample. Limit of detection: 7.9 ng/m3 and limit of quantification: 23.8 ng/m3.
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