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AuthorAl-Madfa, H.
AuthorDahab, O. Aboul
AuthorHolail, H.
Available date2015-11-05T06:57:45Z
Publication Date1994
Publication NameEnvironmental Toxicology and Chemistry
ResourceWiley Online Library
CitationAl-Madfa, H., Dahab, O. A. and Holail, H. (1994), Mercury pollution in doha (Qatar) coastal environment. Environmental Toxicology and Chemistry, 13:5�725�735.�
ISSN1552-8618
URIhttp://dx.doi.org/10.1002/etc.5620130506
URIhttp://hdl.handle.net/10576/3627
AbstractSurface water and sediment samples were collected from the Doha coastal area and analyzed for content of physico-chemical forms of mercury. Dissolved reactive Hg (2.9 ng L?1) represented 81.0% of the total dissolved Hg (3.5 ng L?1). Organic Hg (0.6 ng L?1) contributed only 5.0% of total Hg. Mercury showed a strong tendency to be associated with suspended matter in Doha coastal waters, as it represented about 73.0% of the total. Total Hg in bulk Doha surface sediments fluctuated between 0.14 and 1.75 ?g g?1 dry weight, with an average of 0.54 � 0.46 ?g g?1 dry weight. The sediment fraction past 63 ?m contained 0.73 ?0.60?g g?1 dry weight total Hg. Leachable and methyl Hg averaged 0.10 � 0.11 and 0.02 �0.03 ?g g?1 dry weight, respectively, in the <63-?m sediment fraction. There is a general trend for all Hg species determined in water and sediments to decrease seaward. The significantly elevated Hg levels at certain locations indicated that the main Hg sources to Doha coastal environment are leachate from the solid waste disposal site, the two harbors, and surface-water discharge.
SponsorScientific and Applied Research Center
Languageen
PublisherWiley Periodicals, Inc.
SubjectDoha coast
Leachate
Methyl mercury
Particulate mercury
Reactive mercury
TitleMercury pollution in doha (Qatar) coastal environment
TypeArticle
Issue Number5
Volume Number13
dc.accessType Abstract Only


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