title: Characterization of three major toxaphene congeners in arctic ringed seal by electron ionization and electron capture negative ion mass spectrometry.
abstract: Three environmentally significant chlorinated bornane (CHB) congeners were extracted from Arviat ringed seal blubber and identified by using gas chromatography/mass spectrometry (HRGC/HRECNIMS (CH4), low resolution EIMS, and linked field scanning). They are referred to as TS2 (Parlar#39, B8-531) [2-exo,3-endo,5-exo,6,6,8b,9c,10c (or 10a)-octachlorobornane], TS3 (Parlar#40, B8-1414) [2-endo,3-exo,5-endo,6-exo,8c,9b,10a,10c (or 10b)-octachlorobornane] and TS4 (Parlar#42, Toxicant A, B8-806/809) [2-exo,3-endo,6,6,8b,8c,9c,10c (or 10a)-octachlorobornane/2-exo,3-endo,6,6,8b,9b,9c,10a (or 10b)-octachlorobornane]. This is the first time Toxicant A, known to be the most toxic CHB congener in technical toxaphene, has been found in any significant concentration in a marine mammal.
authors.affiliation: Freshwater Institute, Department of Fisheries and Oceans, Winnipeg, Manitoba, Canada.
authors.forename: M D
authors.initials: MD
authors.lastname: Loewen
authors.forename: G A
authors.initials: GA
authors.lastname: Stern
authors.forename: J B
authors.initials: JB
authors.lastname: Westmore
authors.forename: D C
authors.initials: DC
authors.lastname: Muir
authors.forename: H
authors.initials: H
authors.lastname: Parlar
mesh_terms: D000818:Animals; D001110:Arctic Regions; D002170:Canada; D004784:Environmental Monitoring; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D007306:Insecticides / Q000032:analysis* / Q000737:chemistry; D015394:Molecular Structure; D046048:Seals, Earless / Q000378:metabolism*; D012623:Seawater; D014112:Toxaphene / Q000032:analysis* / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D007306:Insecticides; D014874:Water Pollutants, Chemical; D014112:Toxaphene