Distribution and Mobility of Copper, Zinc and Lead in Plant-Sediment Systems of Quanzhou Bay Estuary, China

Research reveals that sediments in the Quanzhou Bay estuary wetland are moderately to heavily contaminated with zinc (Zn) and lead (Pb), while copper (Cu) contamination is less severe. The study, using sequential extraction procedures, found that Zn and Pb primarily reside in reducible fractions, indicating potential bioavailability, whereas Cu is more strongly retained in oxidizable fractions. Among the plant species studied, Alternanthera philoxeroides demonstrated the highest accumulation of heavy metals, while Phragmites communis showed strong tolerance and transfer capabilities for Zn and Pb. Aegiceras corniculatum, however, appears resistant to contamination, challenging its use as an indicator species. The findings underscore the need for local industries to adopt cleaner production technologies to mitigate pollutant emissions and foster sustainable development.

Yu-Hong, L., Hong-You, H., Jing-Chun, L., & Gui-Lan, W. (2010). Distribution and Mobility of Copper, Zinc and Lead in Plant-Sediment Systems of Quanzhou Bay Estuary, China. International Journal of Phytoremediation, 12(3), 291–305. https://doi.org/10.1080/15226510903563892