Determination of chronological heavy metal deposition and pollution intensity in the bottom sediments of Mumbai Harbour Bay, India using 137Cs as tracer

R. Singhal; M. Venkatesh; D. Wagh; H. Basu; T. Chavan; M. Pimple; A. Reddy

doi:10.1007/s10967-011-1593-x

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 292: Issue 2

Determination of chronological heavy metal deposition and pollution intensity in the bottom sediments of Mumbai Harbour Bay, India using ¹³⁷Cs as tracer

Authors:

R. Singhal

R. Singhal Analytical Chemistry Division, Mod-Labs Bhabha Atomic Research Center Trombay, Mumbai, 400085 India

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M. Venkatesh

M. Venkatesh Analytical Chemistry Division, Mod-Labs Bhabha Atomic Research Center Trombay, Mumbai, 400085 India

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D. Wagh

D. Wagh Analytical Chemistry Division, Mod-Labs Bhabha Atomic Research Center Trombay, Mumbai, 400085 India

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H. Basu

H. Basu Analytical Chemistry Division, Mod-Labs Bhabha Atomic Research Center Trombay, Mumbai, 400085 India

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T. Chavan

T. Chavan Analytical Chemistry Division, Mod-Labs Bhabha Atomic Research Center Trombay, Mumbai, 400085 India

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M. Pimple

M. Pimple Analytical Chemistry Division, Mod-Labs Bhabha Atomic Research Center Trombay, Mumbai, 400085 India

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, and

A. Reddy

A. Reddy Analytical Chemistry Division, Mod-Labs Bhabha Atomic Research Center Trombay, Mumbai, 400085 India

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Pages:: 863–869

Online Publication Date:: 10 Jan 2012

Publication Date:: 01 May 2012

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-011-1593-x

Keywords:: Trace elements; Bottom sediments; Sedimentation rate; ICP-OES; ED-XRF; 137Cs

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Abstract

Downcore variation of trace metals in sediment cores along the coastal line is one of the markers to assess the intrusion of industrial pollutants into the aquatic environment. Fifty sediment core samples from the Mumbai Harbour Bay (MHB), were studied for the trace element content. MHB is a recipient of effluents from different industries situated all along its coast around Thane–Belapur region. The average concentrations of Titanium (Ti), Manganese (Mn), Iron (Fe), Nickel (Ni), Copper (Cu), Zinc (Zn) were determined by inductively coupled plasma-optical emission spectroscopy and complemented by analysing with energy dispersive X-ray fluorescence spectrometry. In addition to this, depth profiles of K and Ca were also studied to assess the homogeneity of the geological strata of the region. Trace metals such as Cu, Ni and Zn show enrichment between 16 to 28 cm, whereas, uniform distribution through out the core was observed for K, Ca, Ti, Mn and Fe. Chronology of the heavy metal deposition was predicated based on the average sedimentation rate (0.92 ± 0.08 cm year⁻¹) derived using depth-wise ¹³⁷Cs concentration profile in core of bottom sediment. The results of the analysis showed that MHB had received excess inputs of Cu, Ni and Zn in the year 1981, 1988 and 1982, respectively. Surface concentration of Cu, Ni, Zn and Fe compared to the reference site indicates moderate pollution in the recent years whereas for elements K, Ca, Ti and Mn, the values are normal indicating MHB unpolluted for the latter elements.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)