Low molecular weight halocarbons in the Humber and Rhine estuaries determined using a new purge-and-trap gas chromatographic method

Krysell, M and Nightingale, PD 1994 Low molecular weight halocarbons in the Humber and Rhine estuaries determined using a new purge-and-trap gas chromatographic method. Continental Shelf Research, 14 (12). 1311-1329. https://doi.org/10.1016/0278-4343(94)90050-7

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Abstract/Summary

A number of chlorinated and brominated low molecular weight hydrocarbons (halocarbons) have been measured in and adjacent to the North Sea estuaries of the Humber and the Rhine. The measurements have been carried out using a newly constructed purge-and-trap sample work-up system coupled to megabore gas chromatography with electron capture detection. The results show that whereas the Humber is a pronounced source of the anthropogenic halocarbons carbon tetrachloride and perchloroethylene, the input from the Rhine into the North Sea of these compounds is more modest. Some halocarbons normally considered as mainly or even exclusively of natural origin are released from the two investigated estuaries into the North Sea. A distinct patch of high concentrations of the naturally produced compound bromoform was observed in the southwestern North Sea. The results have also been used to examine some of the halocarbons for common sources.

Item Type:	Publication - Article
Additional Keywords:	halocarbons, North Sea, Gas Chromatography, purge and trap, methyl iodide
Subjects:	Chemistry Oceanography
Divisions:	Plymouth Marine Laboratory > Other (PML)
Depositing User:	Professor Philip Nightingale
Date made live:	18 Nov 2014 13:44
Last Modified:	06 Jun 2017 16:12
URI:	https://plymsea.ac.uk/id/eprint/6230

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