title: Potential chlorinated and brominated interferences on the polybrominated diphenyl ether determinations by gas chromatography-mass spectrometry.
abstract: The analysis of polybrominated diphenyl ether (PBDE) congeners by GC-MS was studied in terms of potential interferences. Different MS approaches were normally used for the PBDE analyses: negative ion chemical ionization (NICI-MS) and electron ionization (EI-MS). This paper studied the presence of potential interferences in each instrumental technique approach, principally those corresponding to different chlorinated compounds (PCBs, PCNs, etc.) as well as brominated compounds (PBBs, MeO-PBDEs, TBBPA, etc.). The two ionization modes are subjected to different types of interferences. In general, EI-MS is affected by chlorinated interferences, especially PCBs. NICI-MS eliminated chlorinated interferences but presented different brominated interferences, well resolved with the EI-MS approach.
authors.affiliation: Department of Environmental Chemistry, IIQAB, CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain. eeeqam@cid.csic.es
authors.forename: Ethel
authors.initials: E
authors.lastname: Eljarrat
authors.forename: Agustina
authors.initials: A
authors.lastname: de la Cal
authors.forename: Damià
authors.initials: D
authors.lastname: Barceló
mesh_terms: D001966:Bromine / Q000737:chemistry*; D002713:Chlorine / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D011075:Polybrominated Biphenyls / Q000032:analysis* / Q000737:chemistry
chemical_list: D011075:Polybrominated Biphenyls; D002713:Chlorine; D001966:Bromine