College of Chemical Engineering, China University of Petroleum, Beijing City, PR China.
Department of Chemical Engineering, Covenant University, Ota, Nigeria.
Environ Toxicol Chem. 2022 Jul;41(7):1721-1731. doi: 10.1002/etc.5350. Epub 2022 May 18.
We investigated the occurrence of microplastics in samples of borehole drinking water and sediments obtained from borehole sites in Lagos Island, Nigeria. The samples were digested with hydrogen peroxide, pretreated, and filtered through a polytetrafluoroethylene membrane. The filtered microplastics were examined/analyzed under an attenuated total reflection Fourier-transformed infrared device, to quantify the microplastics. The results showed the presence of microplastics in drinking water and sediments from the sites, with plastic concentrations ranging from 206 to 1691 items m and 9-47 items kg for drinking water and sediments, respectively; polypropylene was the most common and was approximately 61.9% for borehole drinking water. In terms of shape distribution, plastic fragments were the highest, at 73.02%. The detected microplastics had a size range of 0.02-0.5 mm. In addition, sites with a lower percentage of microplastics had lower population densities and lower industrial activity, whereas areas of high industrial activity had high amounts of microplastics. Environ Toxicol Chem 2022;41:1721-1731. © 2022 SETAC.
我们调查了尼日利亚拉各斯岛钻孔点的钻孔饮用水和沉积物样本中微塑料的存在情况。这些样本经过过氧化氢消化、预处理，并通过聚四氟乙烯膜过滤。过滤后的微塑料在衰减全反射傅里叶变换红外设备下进行检查/分析，以定量微塑料。结果表明，这些地点的饮用水和沉积物中存在微塑料，饮用水和沉积物中的塑料浓度范围分别为 206 至 1691 项/立方米和 9 至 47 项/千克；最常见的是聚丙烯，约占钻孔饮用水的 61.9%。就形状分布而言，塑料碎片的比例最高，为 73.02%。检测到的微塑料尺寸范围为 0.02-0.5 毫米。此外，微塑料含量较低的地点人口密度较低，工业活动较少，而工业活动较多的地区微塑料含量较高。环境毒理化学 2022;41:1721-1731. © 2022 SETAC.
