Bioaccumulation and health risk assessment of heavy metals to bivalve species in Daya Bay (South China Sea): Consumption advisory. (January 2020)

• Record Type: Journal Article
• Authors: Yuan, Yuan; Sun, Ting; Wang, Huijuan; Liu, Yafeng; Pan, Ye; Xie, Yujing; Huang, Honghui; Fan, Zhengqiu
• Is Part Of: Marine pollution bulletin. Volume 150(2020)
• Publication Date: 2020-01
• Subjects: Heavy metals -- Bioaccumulation -- Filter feeder -- Bivalves -- Health risk assessment -- Maximum allowable consumption rate; Marine pollution -- Periodicals; Marine Biology -- Periodicals; Water Pollution -- Periodicals; Mer -- Pollution -- Périodiques; Publications périodiques; Pollution des mers; Lutte antipollution; Electronic journals; 363.7394
• DOI: 10.1016/j.marpolbul.2019.110717
• Languages: English
• ISSNs: 0025-326X

Abstract

Abstract: Bivalves are one of the key components of the biogeochemical cycle in the marine system, and respond to heavy metal (HM) sensitively as filter feeders. To determine relationship of HMs in edible bivalve and seawater and HM effects on human health when digesting bivalves, HMs were analyzed in bivalves and seawater. The results showed that the mean HM concentrations in bivalves decreased in the order of Zn > Cu > Cr > Pb > As > Cd > Hg. Generally, all the bioconcentration factor values of bivalves were higher than 100, suggesting that bivalves have a high bioaccumulation ability. Nonmetric multidimensional scaling analysis indicated that all bivalves have a high bioaccumulation capacity for Cu and Zn. It was found that there are health risks associated with consuming bivalves, and children are more vulnerable than adults. Finally, the maximum allowable consumption rates of non-carcinogenic and carcinogenic risk were determined. These results provide the underlying insights needed to guide the consumption of seafood. Graphical abstract: Unlabelled Image Highlights: Metal uptake of filter-feeders has been investigated. Zn and Cu concentrations were the highest in bivalves due to critical enzymes. Different bivalves have different bioaccumulation abilities for different HMs. The maximum allowable consumption rates of bivalves were determined.