Marine Science Department, Mathematics and Natural Science Faculty, Sriwijaya University, Palembang, Indonesia.
Marine Science Department, Marine Science and Fisheries Faculty, Udayana University, Jl, Raya Kampus Universitas Udayana, Bukit Jimbaran, Bali, Indonesia.
Mar Pollut Bull. 2020 Sep;158:111380. doi: 10.1016/j.marpolbul.2020.111380. Epub 2020 Jun 16.
Microplastics are proven as heavy metals vector, but the adsorption mechanism still unclear. This study investigated the adsorption of Pb and Cu in microplastics in the Musi River and the environment effect. This study was conducted in 10 stations along the Musi River to the estuary. The polymers of microplastics were dominated by PP and followed by PE, PES, PVC, and nylon. The average concentration of Pb (0.0347 mg L for water and 0.470 mg kg for microplastics) was higher than Cu (0.0138 mg L for water and 0.091 mg kg for microplastics). The highest concentration of both metals in water and microplastics were found in the estuary. Environment parameters have different effects on the adsorption. The present study found that the adsorption processes were following the Freundlich model. The interaction metal-microplastic was physisorption. Pb and Cu will attach through weak bonds and easy to release into the aquatic ecosystem.
微塑料被证实为重金属的载体，但吸附机制仍不清楚。本研究调查了穆西河及其环境中微塑料对 Pb 和 Cu 的吸附作用和环境效应。本研究在穆西河的 10 个站点进行，直至河口。微塑料中的聚合物主要为 PP，其次为 PE、PES、PVC 和尼龙。Pb 的平均浓度（水中为 0.0347mg/L，微塑料中为 0.470mg/kg）高于 Cu（水中为 0.0138mg/L，微塑料中为 0.091mg/kg）。这两种金属在水中和微塑料中的最高浓度均出现在河口。环境参数对吸附有不同的影响。本研究发现，吸附过程遵循 Freundlich 模型。金属-微塑料的相互作用为物理吸附。Pb 和 Cu 将通过弱键结合，并容易释放到水生态系统中。
