210Pb dating and neutron activation analysis of the Sundarban mangrove sediments: sedimentation rate and metal contamination history
Author:
Islam Mohammad Amirul1ORCID, Kabir Shaiful2ORCID, Lubis Ali Arman3, Sugiharto Untung3, Islam M. Moinul1, Hossen Mohammad Belal2
Affiliation:
1. Institute of Nuclear Science and Technology, Atomic Energy Research Establishment , Bangladesh Atomic Energy Commission , Ganakbari, Ashulia , Dhaka 1349 , Bangladesh 2. Department of Physics , Chittagong University of Engineering and Technology , Chittagong 4349 , Bangladesh 3. Research Center for Radiation Process Technology, Research Organisation for Nuclear Energy , National Research and Innovation Agency, KST B.J. Habibie Serpong, Kota Tangerang Selatan , Banten 15314 , Indonesia
Abstract
Abstract
In this study, alpha spectrometry and neutron activation analysis were applied to assess the mass accumulation rate, contamination history, and ecological risk of the Sundarban mangrove sediments. The mass accumulation rates of sediments using 210Pb dating determined for the first time in this area ranged from 0.068 to 3.20 kg m−2 y−1, with an average of 0.61 kg m−2 y−1. The contamination history of 11 metal(loid)s (Al, Ca, V, Cr, Fe, Ni, Cu, Zn, As, Hg, and Pb) was assessed. Different environmental contamination indices suggested that Sundarban mangrove sediments were contaminated by As. Considering different sediment quality guidelines, it was observed that Cr, Ni, and As posed occasional adverse biological effects on marine organisms. Multivariate statistical approaches were applied to elucidate the origin and transport behavior of the studied metal(loid)s in the mangrove ecosystem which suggested that sources of metal(loid) pollution were both anthropogenic and geogenic. The results from this study should improve the knowledge of metal contamination and ecological risk to biota to develop new strategies and enlarge management practices to save sensitive mangrove ecosystems.
Publisher
Walter de Gruyter GmbH
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