Assessment of potentially toxic metal (PTM) pollution in mangrove habitats using biochemical markers: A case study on Avicennia officinalis L. in and around Sundarban, India

被引：61

作者：

Bakshi, Madhurima ^{[1
]}

Ghosh, Somdeep ^{[1
]}

Chakraborty, Debarati ^{[2
]}

Hazra, Sugata ^{[2
]}

Chaudhuri, Punarbasu ^{[1
]}

机构：

[1] Univ Calcutta, Dept Environm Sci, 35 Ballygunge Circular Rd, Kolkata 700019, W Bengal, India

[2] Jadavpur Univ, Sch Oceanog Studies, Kolkata, India

来源：

MARINE POLLUTION BULLETIN | 2018年 / 133卷

关键词：

Mangrove; Potentially toxic metal; Biochemical markers; Sundarban; Antioxidative response; Bioaccumulation; SEEDLINGS KANDELIA-CANDEL; SEDIMENT QUALITY GUIDELINES; ECOLOGICAL RISK-ASSESSMENT; HEAVY-METALS; TRACE-METALS; SURFACE SEDIMENTS; SYDNEY ESTUARY; GREY MANGROVE; OXIDATIVE STRESS; PEROXIDASE-ACTIVITY;

D O I：

10.1016/j.marpolbul.2018.05.030

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Spatial distribution of potentially toxic metals (PTMs) and their accumulation in mangrove Avicennia officinalis L. were studied along 8 locations in and around Sundarban mangrove wetland, India. Among 8 locations, S3 (Chemaguri) and S5 (Ghushighata) showed higher concentration of PTMs (Cd, Cr, Cu, Ni, Pb, Zn) characterized by higher enrichment factors (3.45-10.03), geo-accumulation indices (0.04-1.22), contamination factors (1.14-3.51) and pollution load indices (1.3-1.45) indicating progressive deterioration of estuarine quality and considerable ecotoxicological risk. Metal concentration in A. officinalis leaves showed significant correlation with sediment metals implying elevated level of bioaccumulation. Significant statistical correlation between photosynthetic pigments (Chlorophyll a, Chlorophyll b), antioxidant response (free radical scavenging and reducing ability) and stress enzymatic activity (Peroxidase, Catalase, Super-oxide dismutase) of A. officinalis with increasing metal concentration in the contaminated locations reflects active detoxification mechanism of the plant. The study indicates the potentiality of biomonitoring metal pollution using studied biochemical markers in mangrove habitats.

引用

页码：157 / 172

页数：16

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