Assessment of trace metal contamination level and toxicity in sediments from coastal regions of West Bengal, eastern part of India

被引：56
作者：
Antizar-Ladislao, Blanca [1 ]
Mondal, Priyanka [2 ]
Mitra, Soumita [2 ]
Sarkar, Santosh Kumar [2 ]
机构：
[1] Emerald Energy Consultancy Ltd, London LN7 6GN, England
[2] Univ Calcutta, Dept Marine Sci, Kolkata 700019, W Bengal, India
来源：
MARINE POLLUTION BULLETIN | 2015年 / 101卷 / 02期
关键词：
Trace metals; Ecotoxicology; Sediment quality; Ecological risk index; Hugh River Estuary; Indian Sundarban; SUNDARBAN MANGROVE WETLAND; HEAVY-METALS; SURFACE SEDIMENTS; SPATIAL-DISTRIBUTION; MARINE-SEDIMENTS; RIVER; SPECIATION; RESERVOIR; ELEMENTS; GULF;
D O I：
10.1016/j.marpolbul.2015.11.014
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The work investigated concentration of trace metals in surface sediments (0-10 cm; <63 mu m grain size) from 15 sampling sites of diverse environmental stresses covering Hugli River Estuary (HRE) and Sundarban Mangrove Wetland (SMW), eastern coastal part of India. The trace metal concentrations in sediments exhibited an overall decreasing trend as follows: Cr (21.2-60.9) > Cu (11.60-102.47) > Ni (19.10-52.60) > Pb (7.09-183.88) > As (4.41-11.46) > Cd (0.02-4.4) > Ag (0.02-0.87). Both the geo-accumulation index (I-geo) and contamination factor (CF) values revealed significant pollution by Ag, Cd and Pb at Nurpur of HRE. Potential Ecological Risk Index (RI) (61.21 +/- 112.40) showed wide range of variations from low (19.76) to serious (463.20) ecological risk. A positive significant correlation was found between metals and organic carbon in sediments. The ecological risk associated with the trace metals in sediment was considered on the consensus based Sediment Quality Guidelines (SQGs). The work suggests that the trace metals present in sediments posed adverse effects on the sediment-dwelling organisms. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：886 / 894
页数：9
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