کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6357357 1315617 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Environmental controls on the speciation and distribution of mercury in surface sediments of a tropical estuary, India
ترجمه فارسی عنوان
کنترل های محیطی بر خصوصیات و توزیع جیوه در رسوبات سطحی یک رودخانه ی گرمسیری، هند
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات اقیانوس شناسی
چکیده انگلیسی
Distribution and speciation of mercury (Hg) in the sediments from a tropical estuary (Godavari estuary) was influenced by the changing physico-chemical parameters of the overlying water column. The sediments from the upstream and downstream of the estuary were uncontaminated but the sediments from the middle of the estuary were contaminated by Hg. The concentrations of Hg became considerably less during the monsoon and post monsoon period. Total Hg concentrations and its speciation (at the middle of the estuary) were dependent on the salinity of the overlying water column. However, salinity had little or no effect on Hg association with organic phases in the sediments at downstream. Increasing pH of the overlying water column corresponded with an increase in the total Hg content in the sediments. Total organic carbon in the sediments played an important role in controlling Hg partitioning in the system. Uncomplexed Hg binding ligands were available in the sediments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Pollution Bulletin - Volume 95, Issue 1, 15 June 2015, Pages 350-357
نویسندگان
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