PMID- 15866278
OWN - NLM
STAT- MEDLINE
DCOM- 20050621
LR  - 20070227
IS  - 0048-9697 (Print)
IS  - 0048-9697 (Linking)
VI  - 342
IP  - 1-3
DP  - 2005 Apr 15
TI  - Fate of organochlorine contaminants in arctic and subarctic lakes estimated by 
      mass balance modelling.
PG  - 245-59
AB  - Elevated concentrations of some persistent organic pollutants (POPs) in fish from 
      arctic and subarctic lakes have been hypothesized to be due to processes within 
      food webs and fish physiology. We investigated limnological processes and 
      contaminant chemistry as explanations of these elevated concentrations by 
      developing and applying fugacity-based mass balance models to a relatively small 
      lake in the high arctic and a series of larger lakes in the southern Yukon River 
      basin. The results indicate that high arctic lakes are transient and inefficient 
      sinks for POPs. The mobility of POPs in high arctic lakes is conferred by their 
      hydrologic regime (i.e. partial through flow of melt water loadings) and minimal 
      scavenging and retention in sediments due to extremely low organic carbon in 
      settling and sediment particles. Contaminant dynamics in lakes of the south Yukon 
      River basin are governed by hydrology (i.e., water residence time), because, 
      similarly to high arctic lakes, most of the contaminant inventory resides in the 
      water column due to inefficient scavenging by settling particles. For the less 
      persistent compounds, long water residence time shifts the major loss process 
      from export to degradation. Model results also suggest relatively short 
      degradative half-lives of the hexachlorocyclohexanes (sum of HCHs) and 
      endosulfan, particularly in high arctic Amituk Lake.
FAU - Diamond, Miriam L
AU  - Diamond ML
AD  - Environmental Chemistry Research Group, Department of Geography, University of 
      Toronto, 100 St. George St., Toronto, Ontario, Canada M5S 3G3. 
      miriam.diamond@utoronto.ca
FAU - Bhavsar, Satyendra P
AU  - Bhavsar SP
FAU - Helm, Paul A
AU  - Helm PA
FAU - Stern, Gary A
AU  - Stern GA
FAU - Alaee, Mehran
AU  - Alaee M
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20050409
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
RN  - 0 (Environmental Pollutants)
RN  - 0 (Organic Chemicals)
SB  - IM
EIN - Sci Total Environ. 2007 Feb 1;373(1):433-4
MH  - Animals
MH  - Arctic Regions
MH  - Environmental Pollutants/*analysis/pharmacokinetics
MH  - Fishes/*physiology
MH  - *Food Chain
MH  - *Models, Theoretical
MH  - Organic Chemicals/analysis/pharmacokinetics
MH  - Tissue Distribution
EDAT- 2005/05/04 09:00
MHDA- 2005/06/23 09:00
CRDT- 2005/05/04 09:00
PHST- 2005/05/04 09:00 [pubmed]
PHST- 2005/06/23 09:00 [medline]
PHST- 2005/05/04 09:00 [entrez]
AID - S0048-9697(04)00863-0 [pii]
AID - 10.1016/j.scitotenv.2004.12.045 [doi]
PST - ppublish
SO  - Sci Total Environ. 2005 Apr 15;342(1-3):245-59. doi: 
      10.1016/j.scitotenv.2004.12.045. Epub 2005 Apr 9.