Affordable Access

Publisher Website

Mercury methylation by compounds in humic material

Authors
Journal
The Science of The Total Environment
0048-9697
Publisher
Elsevier
Publication Date
Volume
32
Issue
2
Identifiers
DOI: 10.1016/0048-9697(84)90127-x

Abstract

Abstract Extracts of humic substances in river sediment and leaf mould have the ability to methylate mercury; several compounds have been identified by GC-MS. The methylating abilities of the compounds found and known as constituents in humic material were determined. Only three compounds, 2, 6-di-tert.-butyl-4-methylphenol (BHT), p-xylene and mesitylene had the ability to methylate at pH 3.5. At pH 7, only BHT produced methylmercury, the other two compounds did not. Methylmercury production by BHT increased with increase of temperature, mercury concentration and BHT concentration, and was also influenced by pH; a high production rate was observed at pH 2 and 13.5. BHT was found in river sediment and leaf mould, and the possibility of a contribution to methylmercury formation by BHT in the environment is indicated.

There are no comments yet on this publication. Be the first to share your thoughts.