The Goose Barnacle Pollicipes Pollicipes As a Tool for Trace Metal Biomonitoring and Health Risk Assessment for Human Consumers in Northwestern Atlantic Coast of Morocco
Science of The Total Environment(2024)
Abstract
The bioaccumulation of trace metals Cd, Cr, Cu, Fe, and Zn in soft tissues of the barnacle Pollicipes pollicipes was investigated seasonally along the Atlantic coast of northwestern Morocco. Average concentrations (μg g−1 dry weight) exhibited a decreasing order: Fe (548.15 ± 132.43) > Zn (430.80 ± 181.68) > Cd (17.46 ± 9.99) > Cu (7.72 ± 1.26) > Cr (3.12 ± 0.80), with the highest levels during wet seasons. The “Metal Pollution Index” and “Individual Multimetal Bioaccumulation Index” revealed a substantial barnacle contamination in industrialized areas. Additionally, Cd and Zn concentrations surpassed permissible guideline limits. While the “Target Hazard Quotient” and “Hazard Index” unveiled no significant health risks associated with barnacle consumption for humans, Cd posed potential risks, particularly for children consuming barnacles from polluted locations. Regarding the “Maximum Safe Consumption”, Cd demonstrated potential harm across all sex and age groups. These findings contribute valuable data on the safety of barnacle consumption, marking the initial assessment of such risks in Morocco. The study offers evidence of metal pollution occurrence and proposes the barnacle species as a reliable biomonitor of trace metal bioavailabilities in marine coastal areas. To our knowledge, this investigation is the first comprehensive report of metal contamination biomonitoring using barnacles from Moroccan Atlantic waters.
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Key words
Barnacle consumption,Bioaccumulation,Biomonitors and coastal pollution monitoring,Human health risk assessment,Seafood safety,Trace metal contamination
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