l-N~(l-NP)isfolmdasapartichsmmkd . produd of d i d combustion. It has been suggested tlmt 1-NP may be used as a marker fbr diesel exhaust particle c?qlome. It was the objective ofthis study to ddan6ne the inhalation arposure to 1-NP of diesel mecbsaics (n = 5) m a workshop for buses end srporane of low o a a~j m f i d exposed orsCeworkers(n = 11). Aihm particulate matter(APM) was c o w e d at lixedlocations ontllewo&pb and m the tlndlbg mnes ofworkers and andysd fbr 1-NP by gas rhromstograplnl-mass s p e a m m y (GC-MSMS). Duriog the workday the busgarage workas were arposed to lugher -* ~t o l -N P w a e~r n o r d e r o f~l t i g h e r~W o r k ---. during the workday end off-work hours. of 1-NP (-4.0 -70.6 pglmg, ampared to the ofiiceworkem (<1.0 -11.1 pglmp. Inhslation hours compared to &-work hours. For 05ce persod there was no difFerence
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