title: [Study on certified reference material of benzene, toluene, o-xylene in charcoal].
abstract: This certified reference material (CRM) of benzene, toluene and o-xylene in charcoal is used for quility control and calibration of analytical instruments in the determination of benzene, toluene and o-xylene in air. Homogeneity of benzene, toluene and o-xylene concentrations in the CRM was testes by GC. The stability of the CRM was assessed for one year. The certified values are based on analysis made by a group of independent laboratoies using GC method.
authors.affiliation: Institute of Occupational Medicine, Chinese Academy of Preventive Medicine, Beijing, China.
authors.forename: X
authors.initials: X
authors.lastname: Huang
authors.forename: W
authors.initials: W
authors.lastname: Wu
authors.forename: Z
authors.initials: Z
authors.lastname: Li
mesh_terms: D001554:Benzene / Q000032:analysis*; D002606:Charcoal / Q000737:chemistry*; D012015:Reference Standards; D014050:Toluene / Q000032:analysis*; D014992:Xylenes / Q000032:analysis*
chemical_list: D014992:Xylenes; D002606:Charcoal; D014050:Toluene; D001554:Benzene; C026114:2-xylene