Isolation and identification of 1,3,5-trichloro-2-(4-nitrophenoxy)benzene (CNP) in shellfish

1,3,5-trichloro-2-(4-nitrophenoxy)benzene (CNP), a widely used herbicide in Japan, has been identified in environmental biota for the first time. CNP was isolated from mussel collected in Tokyo bay and confirmed by GC-MS, IR and UV spectra. The level of CNP in the mussel sample was approximately 1 ppm on wet basis.