NDLI: Speciation of selected trace metals (Fe, Mn, Cu and Zn) with depth in the sediments of Sundarban mangroves: India and Bangladesh

Content Provider	Springer Nature Link
Author	Kumar, Alok Ramanathan, AL
Copyright Year	2015
Abstract	The study was conducted to highlight the distribution of trace metals in the world’s largest mangrove ecosystem, Sundarban, in India and Bangladesh. A speciation technique was used to document the bioavailability and environmental hazards associated with operationally defined chemical forms of trace metals.Seven sediment cores were selected to study the speciation of selected trace metals (Fe, Mn, Cu and Zn) in the sedimentary mangrove environment. A modified European Community Bureau of Reference (BCR) three-step sequential extraction procedure was used to target chemical forms.Texture analysis showed that the hydrodynamic conditions prevailing in the region are high in energy that leads to the deposition of sediment fractions in the following order: silt > clay > sand. The fine-grained sediments have the potential for binding trace metals. The trace metal content was higher in the fine-grained fraction that was dominant in the Indian Sundarban (IS) than Bangladesh Sundarban (BS). The ranges of concentrations of four trace metals were as follows: 38,760–52,829 μg g$^{−1}$ for Fe, 424–770 μg g$^{−1}$ for Mn, 36–82 μg g$^{−1}$ for Cu and 55–83 μg g$^{−1}$ for Zn in IS, while in BS, the ranges were 29,081–45,025 μg g$^{−1}$ for Fe, 342–792 μg g$^{−1}$ for Mn, 12–45 μg g$^{−1}$ for Cu and 29–75 μg g$^{−1}$ for Zn. Speciation suggested the dominance of Mn in the acid-soluble fraction (>68 % IS; >52 % BS) while Fe (>83 % IS; >80 % BS), Cu (>56 % IS; >60 % BS) and Zn (>77 % IS; >80 % BS) dominated in the residual fraction. The speciation pattern showed that due to low organic carbon (OC) content (<0.99 % IS; <1.52 % BS), the Fe–Mn oxyhydroxide fraction (fraction 2) acts as a scavenging phase for Fe, Cu and Zn. The Risk Assessment Code (RAC) showed moderate to very high risk with respect to Cu and Mn, whereas Fe and Zn were in the low-risk category suggesting an anthropogenic influence with respect to Cu and Mn.The dominance of Cu and Mn in the non-residual fraction suggests anthropogenic sources, such as port-related activities and sewage runoff. The study highlights the dominance of anthropogenic activity and lack of freshwater flow in IS compared to BS, which affects the speciation profile of trace metals in the mangrove sediments.
Starting Page	2476
Ending Page	2486
Page Count	11
File Format	PDF
ISSN	14390108
Journal	Journal of Soils and Sediments
Volume Number	15
Issue Number	12
e-ISSN	16147480
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-09-15
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mangroves Risk assessment Sediments Speciation Trace metals Soil Science & Conservation Environment Environmental Physics
Content Type	Text
Resource Type	Article
Subject	Stratigraphy Earth-Surface Processes

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Heavy metal risk assessment after oxidation of dredged sediments through speciation and availability studies in the Reno river basin, Northern Italy

Crop contamination by selected trace elements : categorization of agricultural soils from the viewpoint of risk assessment

Trace metal pollution in freshwater sediments of the world’s largest mercury mining district: sources, spatial distribution, and environmental implications

Managing European Sediments: Can We Expand Our Ecological Risk Assessment Paradigms?

A new speciation scheme of soil polycyclic aromatic hydrocarbons for risk assessment

Speciation of Zn, Cu, and Pb in the soil depending on soil texture and fertilization with sewage sludge compost

Availability of Cu and Zn in an acidic sludge-amended soil as affected by zeolite application and liming

Ecological risk assessment of soil contamination by trace elements around coal mining area

Trace metals in sediments and aquatic plants from the Xiangjiang River, China

Speciation of selected trace metals (Fe, Mn, Cu and Zn) with depth in the sediments of Sundarban mangroves: India and Bangladesh

Similar Documents

Heavy metal risk assessment after oxidation of dredged sediments through speciation and availability studies in the Reno river basin, Northern Italy

Crop contamination by selected trace elements : categorization of agricultural soils from the viewpoint of risk assessment

Trace metal pollution in freshwater sediments of the world’s largest mercury mining district: sources, spatial distribution, and environmental implications

Managing European Sediments: Can We Expand Our Ecological Risk Assessment Paradigms?

A new speciation scheme of soil polycyclic aromatic hydrocarbons for risk assessment

Speciation of Zn, Cu, and Pb in the soil depending on soil texture and fertilization with sewage sludge compost

Availability of Cu and Zn in an acidic sludge-amended soil as affected by zeolite application and liming

Ecological risk assessment of soil contamination by trace elements around coal mining area

Trace metals in sediments and aquatic plants from the Xiangjiang River, China

Speciation of selected trace metals (Fe, Mn, Cu and Zn) with depth in the sediments of Sundarban mangroves: India and Bangladesh