Dechloranes 602, 603, 604, Dechlorane Plus, and Chlordene Plus, a newly detected analogue, in tributary sediments of the Laurentian Great Lakes.
A chlorinated compound (Chlordene Plus, CP), structurally related to Dechloranes (Dec) 602, 603, 604, and Dechlorane Plus (DP), was identified, and concentrations and spatial trends of Dec 602, 603, 604, CP, and DP in tributary sediments of the Laurentian Great Lakes are reported. The dechloranes were widely detected with their concentrations varying considerably across the Great Lakes basin. Spatial trends of Dec 602, 604, and DP in Canadian tributary sediments were similar to that of BDE 209, which suggested these flame retardant chemicals in tributaries were associated with industrial and urban areas. The highest concentrations of Dec 602, 604, and DP observed in tributaries of the Niagara River confirmed that past or ongoing manufacturing of these compounds at plants along the river were important sources to Lake Ontario. Dec 603 was detected in technical products of aldrin and dieldrin, and its spatial trend was consistent with historic pesticide usage. Similarly, CP was detected in technical products of chlordene and chlordane, and it was found in higher concentrations in sediments near urban areas, possibly related to past chlordane use in home termite control.
Department of Chemistry, Brock University, St. Catharines, Ontario, Canada.
Li
L
Shen
Eric J
EJ
Reiner
Karen A
KA
MacPherson
Terry M
TM
Kolic
Paul A
PA
Helm
Lisa A
LA
Richman
Chris H
CH
Marvin
Debbie A
DA
Burniston
Brad
B
Hill
Ian D
ID
Brindle
Robert
R
McCrindle
Brock G
BG
Chittim
D002706:Chlordan / Q000031:analogs & derivatives* / Q000032:analysis; D004784:Environmental Monitoring; D005411:Flame Retardants / Q000032:analysis; D005618:Fresh Water / Q000737:chemistry; D019015:Geologic Sediments / Q000737:chemistry; D006114:Great Lakes Region; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D007306:Insecticides / Q000032:analysis; D011083:Polycyclic Compounds / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
D005411:Flame Retardants; D006843:Hydrocarbons, Chlorinated; D007306:Insecticides; D011083:Polycyclic Compounds; D014874:Water Pollutants, Chemical; C556733:dechlorane 602; C556736:dechlorane 603; C556738:dechlorane 604; C526360:dechlorane plus; D002706:Chlordan; C010881:chlordene