Abstract
Abstract Synthetic nitro musks, fragrance ingredients of soaps, lotions, and other products commonly used in the home and laboratory, are potential interferences in analyses of foods for pesticide residues. These fragrances are recovered by extraction-cleanup procedures of the AOAC multiresidue method for fatty and nonfatty foods and have electron capture gas-liquid chromatographic properties similar to the organochlorine residues for which the method has official status. This report presents the analytical evidence that led to the identification of musk xylol (1-[1,1-dimethylethyl]-3,5-dimethyl-2,4,6-trinitrobenzene) as a contaminant in a sample of fish; mass spectra and data on the behavior in the AOAC multiresidue method of musk xylol, musk ambrette (1-[1,1-dimethylethyl]-2-methoxy-4-methyl - 3,5 - dinitrobenzene), musk tibetene (1-[1,1-dimethylethyl]-3,4,5-trimethyl-2,6-dinitrobenzene), and musk ketone (1-[4-(1,1-dimethylethyl)-2,6-dimethyl - 3,5 - dinitrophenyl] ethanone); and information on some sources of these chemicals in the laboratory environment.
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