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Multi-media compartments for assessing ecological and health risks from concurrent exposure to multiple contaminants on Bhola Island,Bangladesh

引用

Emerging Contaminants 2022年第1期8卷 134-150页

作者： Tasrina Rabia Choudhury tanjeela islam Abu Reza Md Towfiqul islam Md Hasanuzzaman Abubakr M.Idris M.Safiur Rahman Edris Alam A.M.Sarwaruddin Chowdhury Analytical Chemistry Laboratory Chemistry DivisionAtomic Energy Centre DhakaBangladesh Atomic Energy CommissionDhaka1000Bangladesh Department of Applied Chemistry and Chemical Engineering University of DhakaDhaka1000Bangladesh Department of Disaster Management Begum Rokeya UniversityRangpur5400Bangladesh Department of Chemistry College of ScienceKing Khalid UniversityAbha61431Saudi Arabia Research Center for Advanced Materials Science(RCAMS) King Khalid UniversityAbhaSaudi Arabia Water Quality Research Laboratory Chemistry DivisionAtomic Energy Centre DhakaBangladesh Atomic Energy CommissionDhaka1000Bangladesh Faculty of Resilience Rabdan AcademyAbu Dhabi22401United Arab Emirates Department of Geography and Environmental Studies University of ChittagongChittagong4331Bangladesh

In this study,a set of coupled multi-media compartments(i.e.,sediment,soil,water and vegetable)was used to assess ecological and health risks from the ingestion of 11 PTEs(Pb,Cd,Cr,As,Hg,Cu,Zn,Ni,Co,Fe,and Mn)and their transportation routes in the water-soil-plant system from the coastal Bhola Island,*** mean concentrations of Cd,Pb,and Co for soil and Cd,Co,and As for sediment were higher than their reference *** contrast,Cd,Pb,and Ni concentrations in water surpassed the acceptable limits set by national and international laws and were considered unsuitable for drinking *** demonstrated high Pb and Cd contents,demonstrating a potential food safety risk to the *** of principal component analysis(PCA)revealed that Cd,Pb,Hg,Cu,Ni and Zn sources were likely to be anthropogenic,especially agro-farming inputs,whereas the Fe,As,Cr,Mn,and Co sources were similar to natural ***,Cd,Pb and Co are the key contaminants in the study area and pose the elevated health and ecological risks in the coastal *** and Pb exhibited higher ecological risks in soils and sediments,as Pb had the highest bio-accessibility(BA;0.02±0.003)and Cd possessed a high bioaccumulation factor(BCF;0.004±0.006).The self-organizing map analysis recognized three spatial patterns which are good agreement with *** average hazard index(HI)values for soil were above the permissible level(HI>1)set by the respective agency;two times higher HI values were noticed for children than adults,suggesting children are highly susceptible to health *** monitoring and source controls for Cd and Pb,along with agro-farming management practices,need to be implemented to reduce the risk of PTE contamination to the aquatic ecosystem and its inhabitants.

关键词： Health risk assessment Potentially toxic elements Coastal environment Water-soil-plants Aquatic ecosystem

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