School of Chemistry and Chemical Engineering, Shihezi University, Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, Xinjiang, 832003, China.
Ecological Environmental Protection Monitoring Station of Shihezi, Xinjiang, 832000, China.
Environ Sci Pollut Res Int. 2022 Aug;29(39):59403-59413. doi: 10.1007/s11356-022-20083-7. Epub 2022 Apr 6.
The problems are associated with microplastic (MP) pollution of global concern. However, little is known about the pollution characteristics and sources of MPs in urban green-belt soils. Therefore, this study investigated MP pollution in 11 sampling sites (22 green belts) in Shihezi City. The results showed that the abundance of MPs (0.02-5.00 mm) ranged from 287 ± 100 items/kg dw to 3227 ± 155 items/kg dw (mean + SD). Fibers (69.9%) accounted for the majority of MPs, and the MPs were mainly black (36.7%) and 0.02-0.5 mm (64.8%). The main types of MPs were polystyrene (PS) and polyethylene (PE). Compared with agricultural soil, the color and composition of green-belt soil MPs are diverse, which means that the source of green-belt soil MPs is more diverse. In different types of green-belt soil, MP pollution of industrial green land is more serious. Through cluster analysis and spatial distribution, fragments and fibers were found to have similar sources, mainly originating from food and textile industrial activities. This study provides important information for revealing MP pollutions in urban green-belt soils.
这些问题与全球关注的微塑料 (MP) 污染有关。然而，人们对于城市绿化带土壤中 MPs 的污染特征和来源知之甚少。因此，本研究调查了石河子市 11 个采样点（22 个绿化带）的 MP 污染情况。结果表明， MPs（0.02-5.00mm）的丰度范围为 287±100 个/kg dw 至 3227±155 个/kg dw（平均值+SD）。纤维（69.9%）占 MPs 的大部分，MPs 主要为黑色（36.7%）和 0.02-0.5mm（64.8%）。 MPs 的主要类型为聚苯乙烯（PS）和聚乙烯（PE）。与农业土壤相比，绿化带土壤 MPs 的颜色和组成多样，这意味着绿化带土壤 MPs 的来源更加多样化。在不同类型的绿化带土壤中，工业绿地的 MP 污染更为严重。通过聚类分析和空间分布，发现碎片和纤维具有相似的来源，主要来自食品和纺织工业活动。本研究为揭示城市绿化带土壤中的 MP 污染提供了重要信息。
