Seasonal changes and relations between levels of organochlorines in Arctic ambient air: first results of an all-year-round monitoring program at Ny-Alesund, Svalbard, Norway

Article Abstract:

Seasonal variations and long-range transport affect the concentrations of polychlorinated pesticides and biphenyls in Arctic air. This was gleaned from the results of the weekly measurements of polychlorinated compounds at Ny-Alesund, Svalbard, Norway, from Mar. to Oct. 1993. A definite seasonal variation of trans-chlordane and cis-nonachlor was noted. A significant relationship was also observed between concentrations of some chlordane congeners and the most volatile polychlorinated biphenyl (PCB) congeners. There was no evidence of seasonal change in the PCB concentrations.

Polychlorinated biphenyls, Arctic regions

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Air-water equilibrium of hexachlorocyclohexanes and chloromethoxybenzenes in the North and South Atlantic

Article Abstract:

Meridional changes in the concentrations of selected semivolatile organochlorinated compounds in the air and surface water of the Atlantic Ocean were examined. Results reveal that North Atlantic water is undersaturated with alpha-hexachlorocyclohexane (HCH) and gamma-HCH relative to its air. In contrast, an almost complete air-sea exchange equilibrium for both HCHs and for pentachloroanisole and tetrachloro-1,4-dimethoybenzene was observed in the South Atlantic.

Research, Ocean-atmosphere interaction, North Atlantic Ocean, South Atlantic Ocean

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Hexachlorocyclohexanes in air in southern Norway. Temporal variation, source allocation, and temperature dependence

Article Abstract:

The average level of concentrations of alpha- and gamma-hexachlorocyclohexane (HCH) concentrations measured in air between 1991 and 1995 in southern Norway were found to be 66 pg/m3 and 48 pg/m3, respectively. Only alpha-HCH in air demonstrated a 50% reduction during the 5-year period. The seasonally variable gamma-HCH levels indicate higher gamma-HCH concentrations at higher temperatures.

Research and Development in the Physical, Engineering, and Life Sciences, Air Pollution Control R&D, Measurement, Norway, Pollution, Pollutants, Air pollution research, Pollution control research

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