title: Identification of the minor components of Great Lakes DE-71 technical mix by means of 1H NMR and GC/MS.
abstract: The production of technical penta-BDE products such as Great Lakes DE-71 is not a clean process but, instead, gives complex mixtures of various BDE congeners. This study reports the verification of the structures of many of the BDE congeners in Great Lakes DE-71 using (1)H NMR and/or GC/MS. In total, 24 BDE congeners, including nine (tetra-BDEs 42, 48, 51, and 91; penta-BDEs 102, 104, and 119; hexa-BDEs 149 and 155) which had not been reported previously, were identified in this technical mix by (1)H NMR. The quantification of these congeners was realized by two independent methods: (1)H NMR spectroscopy in combination with HRGC/LRMS and isotopic dilution and HRGC/HRMS analysis. The values obtained compare well between methods, and with data produced in earlier studies.
authors.affiliation: Wellington Laboratories Inc., Research Division, Guelph, Ontario, Canada N1G 3M5.
authors.forename: Alexandre
authors.initials: A
authors.lastname: Konstantinov
authors.forename: Gilles
authors.initials: G
authors.lastname: Arsenault
authors.forename: Brock
authors.initials: B
authors.lastname: Chittim
authors.forename: Alan
authors.initials: A
authors.lastname: McAlees
authors.forename: Robert
authors.initials: R
authors.lastname: McCrindle
authors.forename: Dave
authors.initials: D
authors.lastname: Potter
authors.forename: Colleen
authors.initials: C
authors.lastname: Tashiro
authors.forename: Brian
authors.initials: B
authors.lastname: Yeo
mesh_terms: D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D045424:Complex Mixtures / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D004785:Environmental Pollutants / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D055768:Halogenated Diphenyl Ethers; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008970:Molecular Weight; D010647:Phenyl Ethers / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D011075:Polybrominated Biphenyls / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D045424:Complex Mixtures; D004785:Environmental Pollutants; D055768:Halogenated Diphenyl Ethers; D010647:Phenyl Ethers; D011075:Polybrominated Biphenyls; C086401:pentabromodiphenyl ether