Mercury speciation in the Persian Gulf sediments.
The concentrations of total mercury (Hg) and methyl mercury (MMHg) were determined in 78 marine sediments in the Iranian coastal waters of the Persian Gulf along nine transects perpendicular to the coastline. Total Hg ranged from 10 to 56 ng g( - 1)d.w. and MMHg from 0.1 to 0.4 ng g( - 1) d.w. The fraction of methyl mercury accounted from 0.3% to 1.1% of the total mercury amount. The organic carbon (OC) content ranged from 0.4% to 1.8%. The present study indicates that the levels of Hg in the sediments of the Iranian coast of the Persian Gulf were all in the concentration range of unpolluted areas regarding Hg (<100 ng g( - 1)). The concentrations of total Hg, methyl mercury and organic carbon were generally higher in the deeper stations. Total Hg and MMHg were significantly correlated, but no significant correlations could be found between the Hg and OC levels.
Department of Analytical and Environmental Chemistry (ANCH), Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium. aaagah_hom@yahoo.com
Homira
H
Agah
Marc
M
Elskens
S Mohammad Reza
SM
Fatemi
Fereidoon
F
Owfi
Willy
W
Baeyens
Martine
M
Leermakers
D004784:Environmental Monitoring; D005843:Geography; D019015:Geologic Sediments / Q000737:chemistry*; D019156:Indian Ocean; D007700:Kinetics; D008628:Mercury / Q000032:analysis* / Q000737:chemistry; D017669:Mercury Compounds / Q000032:analysis; D008767:Methylmercury Compounds / Q000032:analysis; D012623:Seawater / Q000737:chemistry*
D017669:Mercury Compounds; D008767:Methylmercury Compounds; D008628:Mercury