Global baseline pollution studies XI: Congener specific determination of polychlorinated biphenyls (PCB) and occurrence of alpha- and gamma-hexachlorocyclohexane (HCH), 4,4′-DDE and 4,4′-DDT in continental air

Interhemisphere exchange of hexachlorocyclohexanes, hexachlorobenzene, polychlorobiphenyls, and 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane in the lower troposphere

“…Correlating the deposited amount to the particle flux, a mean settling velocity of 100 m/day would fit the PCB concentrations in the air sample A. The isomer-specific analysis of the PCB congeners by high-resolution gas chromatography and mass selective detection (HRGC/MSD) clearly demonstrated the shift of the higher chlorinated PCB congeners to the particle phase, as well as the deviation from the standard mixture particularly for the pentachlorobiphenyls (9).…”

“…The following results are used to discuss the mobility of HCH, HCB, PCB, and 4,4'-DDT in the lower troposphere of both hemispheres: (1) two samples described in this report (Table III) and three air samples discussed in (9), representing base-line levels in the westerlies of the northern hemisphere, (2) seven air samples from Réunion, representing base-line levels in the trade winds of the Southern Hemisphere (Table IV) (10), and (3) reports from other authors (2, 8, 23-28). 4.1. Hexachlorocyclohexanes and Hexachlorobenzene in the Troposphere.…”

“…The discussion of the mobility in the troposphere is based in this paper on results obtained from depositions on snow and air samples of the Northern (9) and Southern Hemisphere (10), including previous measurements of other authors. The sources for the occurrence of HCB in the environment are not fully understood.…”

The Equilibrium Distribution of Semivolatile Organochloro Compounds between Atmosphere and Surface Water in the Atlantic Ocean

“…preseparation by adsorption liquid chromatography. and separation and detection by high-resolution capillary gas chromatography with electron-capture detection (HRGC -ECD) arc described in ref [13]. The hexachlorocyclohexanes in surface water were analyzed according to a inethod descrihed in ref.…”

A GIS model-based assessment of the environmental distribution of γ-hexachlorocyclohexane in European soils and waters

“…Finally, y-HCH has long atmospheric residence time (Wittlinger and Ballschmiter, 1987;Breivik and Wania, 2002;Atkinson et al, 1999), and therefore air concentration in Europe may be affected by emissions occurring in remote regions (e.g. North America, Southeast Asia), where lindane is still used in agriculture (Tuduri et al, 2006) but where detailed and accurate information on emissions is equally lacking (Tuduri et al, 2006;Li, 2004).…”