Seasonality of air-water fluxes of hexachlorocyclohexanes in Lake Ontario
Article Abstract:
Hexachlorocyclohexane (HCH) air-water gas transfer for Lake Ontario was measured for the period May-Oct. 1993. Air-water fluxes were computed while the semi-annual loadings of alpha- and gamma-HCH were estimated. Air concentrations ranged from 51-200 pg m(super -3) for alpha-HCH and from 8-133 pg m(super -3) for gamma-HCH. HCH air-water gas exchange was found to be a seasonally dynamic process with reverses between volatilizational and depositional situations for the isomers.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
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Reversal of the air-water gas exchange direction of hexachlorocyclohexanes in the Bering and Chukchi seas: 1993 vs 1988
Article Abstract:
The air-water gas exchange of hexachlorocyclohexanes (HCHs) in the Bearing and Chuckchi seas between 1988 and 1993 was studied to determine the magnitude and direction of the gas flux. Water and air samples were collected and subjected to volumetric analysis using a gas chromatograph. Results show that the average concentration of HCHs in the ocean surface water dropped by about 20% since 1988 while air concentrations dropped by a factor of three.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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Seasonality in exchange of organochlorines between Arctic air and seawater
Article Abstract:
An investigation of the air-to-sea exchanges of organochlorine (OC) pesticides in the Arctic environment determined that advection of polar mixed layer water had a strong influence on the OC concentrations in seawater. Loss of OC due to particle sedimentation was found not to be an important factor in determining OC concentrations at the surface layer.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1997
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