Chiral signatures of PCB#s 95 and 149 in indoor air, grass, duplicate diets and human faeces

摘要: Chiral signatures of PCB#s 95 and 149 are reported for indoor air, grass, omnivorous vegan duplicate human diet homogenates, faeces. Comparison chiral both congeners in grass with those previously outdoor air (measured at a height 1.5 m) soil the same location suggest that volatilisation PCBs present may exert significant influence on concentrations grass. Duplicate homogenates display racemic congeners. Alongside this implies intake via inhalation is racemic, observed variation between individuals extent enantioselective degradation liver samples indicates possible inter-individual ability to metabolise PCBs. PCB# 10 faecal analysed indicate 8 be but 2 an excess 2nd eluting enantiomer. This consistent 1st enantiomer elsewhere samples, as it excretion However, residues majority indication interaction cytochrome P450 occurs slowly. The or near-racemic match closely differ from soil, adding weight evidence ventilation far more contributor than soil.