title: [Determination methods of EPN in air of working places].
authors.forename: Jin-ping
authors.initials: JP
authors.lastname: Yang
authors.forename: Lu-xin
authors.initials: LX
authors.lastname: Zhang
authors.forename: Tong
authors.initials: T
authors.lastname: Liu
mesh_terms: D000388:Air / Q000032:analysis*; D002849:Chromatography, Gas / Q000379:methods*; D004849:Phenylphosphonothioic Acid, 2-Ethyl 2-(4-Nitrophenyl) Ester / Q000032:analysis*; D017132:Workplace
chemical_list: D004849:Phenylphosphonothioic Acid, 2-Ethyl 2-(4-Nitrophenyl) Ester