PMID- 15683168
OWN - NLM
STAT- MEDLINE
DCOM- 20050324
LR  - 20190917
IS  - 0730-7268 (Print)
IS  - 0730-7268 (Linking)
VI  - 24
IP  - 1
DP  - 2005 Jan
TI  - Air-water gas exchange of chlorinated pesticides in four lakes spanning a 1,205 
      meter elevation range in the Canadian Rocky Mountains.
PG  - 61-9
AB  - Concentrations of selected persistent organic pollutants (POPs) in air and water 
      were measured from four lakes that transect the Canadian Rocky Mountains. These 
      data were used in combination with wind velocity and temperature-adjusted Henry's 
      law constants to estimate the direction and magnitude of chemical exchange across 
      the air-water interface of these lakes. Bow Lake (1,975 m above sea level [masl]) 
      was studied during the summers of 1998 through 2000; Donald (770 masl) was 
      studied during the summer of 1999; Dixon Dam Lake (946 masl) and Kananaskis Lake 
      (1,667 masl) were studied during the summer of 2000. Hexachlorobenzene (HCB) and 
      dieldrin volatilized from Bow Lake in spring and summer of 1998 to 2000 at a rate 
      of 0.92 +/-1.1 and 0.55+/-0.37 ng m(-2) d(-1), respectively. The alpha-endosulfan 
      deposited to Bow Lake at a rate of 3.4+/-2.2 ng m(-2) d(-1). Direction of gas 
      exchange for gamma-hexachlorocyclohexane (gamma-HCH) changed from net deposition 
      in 1998 to net volatilization in 1999, partly because of a surge in y-HCH 
      concentrations in the water at Bow Lake in 1999. Average gamma-HCH concentrations 
      in air declined steadily over the three-year period, from 0.021 ng m(-3) in 1998, 
      to 0.0023 ng m(-3) in 2000, and to volatilization in 1999 and 2000. Neither the 
      concentrations of organochlorine compounds (OCs) in air and water, nor the 
      direction and rate of air-water gas exchange correlate with temperature or 
      elevation. In general, losses of pesticides by outflow were greater than the 
      amount exchanged across the air-water interface in these lakes.
FAU - Wilkinson, Andrew C
AU  - Wilkinson AC
AD  - Program for Chemical and Environmental Toxicology, University of Ottawa, Ottawa, 
      Ontario K1N 6N5, Canada.
FAU - Kimpe, Lynda E
AU  - Kimpe LE
FAU - Blais, Jules M
AU  - Blais JM
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Environ Toxicol Chem
JT  - Environmental toxicology and chemistry
JID - 8308958
RN  - 0 (Air Pollutants)
RN  - 0 (Fungicides, Industrial)
RN  - 0 (Hydrocarbons, Chlorinated)
RN  - 0 (Insecticides)
RN  - 0 (Water Pollutants, Chemical)
RN  - 4Z87H0LKUY (Hexachlorobenzene)
RN  - 59NEE7PCAB (Hexachlorocyclohexane)
RN  - I0246D2ZS0 (Dieldrin)
RN  - OKA6A6ZD4K (Endosulfan)
SB  - IM
MH  - Air Pollutants/*analysis
MH  - Canada
MH  - Dieldrin/analysis
MH  - Ecosystem
MH  - Endosulfan/analogs & derivatives/analysis
MH  - Fresh Water/*chemistry
MH  - Fungicides, Industrial/analysis
MH  - Hexachlorobenzene/analysis
MH  - Hexachlorocyclohexane/analogs & derivatives/analysis
MH  - Hydrocarbons, Chlorinated/*analysis
MH  - Insecticides/analysis
MH  - Water Pollutants, Chemical/*analysis
EDAT- 2005/02/03 09:00
MHDA- 2005/03/25 09:00
CRDT- 2005/02/03 09:00
PHST- 2005/02/03 09:00 [pubmed]
PHST- 2005/03/25 09:00 [medline]
PHST- 2005/02/03 09:00 [entrez]
AID - 10.1897/04-071r.1 [doi]
PST - ppublish
SO  - Environ Toxicol Chem. 2005 Jan;24(1):61-9. doi: 10.1897/04-071r.1.