Evaluation of trace metals in seawater, sediments, and bivalves of Nellore, southeast coast of India, by using multivariate and ecological tool

被引：29
|
作者：
Jha, Dilip Kumar [1 ]
Ratnam, Krupa [1 ]
Rajaguru, S. [1 ]
Dharani, G. [1 ]
Devi, M. Prashanthi [2 ]
Kirubagaran, R. [1 ]
机构：
[1] Govt India, Minist Earth Sci, Natl Inst Ocean Technol, Ocean Sci & Technol Isl, Chennai, Tamil Nadu, India
[2] Bharathidasan Univ, Dept Environm Sci & Management, Sch Environm Sci, Tiruchirappalli, Tamil Nadu, India
来源：
MARINE POLLUTION BULLETIN | 2019年 / 146卷
关键词：
Seawater; Sediment; Trace metal; Nellore; Contamination factor; Ecological risk index; EAST-COAST; PHYSICOCHEMICAL PARAMETERS; ESTUARINE SEDIMENTS; SURFACE SEDIMENTS; WATER-QUALITY; RIVER ESTUARY; HEAVY-METALS; CONTAMINATION; POLLUTION; BAY;
D O I：
10.1016/j.marpolbul.2019.05.044
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Urbanization in recent years has driven us to investigate metal contamination on Nellore coast by collecting seawater, sediment, and bivalve samples monthly at five stations from 2015 to 2017. Non-metric multidimensional scaling and cluster analysis indicated that open sea (OS) samples were markedly different from the samples collected at other stations. Strong factor loadings of Al (0.76), Mn (0.79), and Cd (0.78) showed variability in seawater, while those for Fe (0.76), Ni (0.77), Zn (0.85), and Pb (0.81) showed variability in sediment. The mean values of Fe (346 ppm) and Mn (21 ppm) were high in bivalves compared to the mean values of other metals. A higher contamination factor was observed for Cd at Buckingham Canal, while the lowest was observed for sediment in OS. The order of trace metals in sediments according to risk index was Cd > Pb > Cu > Cr > Zn. The results obtained are essential to establish a reference for better comparison of tropical environments.
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页码：1 / 10
页数：10
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