Assessing the Occurrence and Distribution of Microplastics in Surface Freshwater and Wastewaters of Latvia and Lithuania.
Assessing the Occurrence and Distribution of Microplastics in Surface Freshwater and Wastewaters of Latvia and Lithuania.
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DOI：
10.3390/toxics11040292
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发表时间：
2023-03-23
期刊：
影响因子：
4.6
通讯作者：
Dzingelevičienė R
中科院分区：
文献类型：
--
作者：
Pashaei R;Sabaliauskaitė V;Suzdalev S;Balčiūnas A;Putna-Nimane I;Rees RM;Dzingelevičienė R
于2021年7月及12月测量了从拉脱维亚的道加夫皮尔斯及利帕哈城市，以及立陶宛的克莱佩达及绍利艾城市收集的地表水及废水中的微塑料浓度。使用光学显微镜，使用显微拉曼光谱表征聚合物组合物。地表水和废水样品中微塑料的平均丰度为16.63 ± 20.29颗粒/L。水中微塑料的主要形状组是纤维，在拉脱维亚主要颜色是蓝色（61%），黑色（36%）和红色（3%）。在立陶宛发现了类似的分布，即，纤维（95%）和碎片（5%）具有主色，例如蓝色（53%）、黑色（30%）、红色（9%）、黄色（5%）和透明（3%）。可见微塑料的显微拉曼光谱被确定为聚对苯二甲酸乙二醇酯（33%）和聚氯乙烯（33%），尼龙（12%），聚酯（PS）（11%）和高密度聚乙烯（11%）。在研究区域，来自集水区的市政和医院废水是拉脱维亚和立陶宛地表水和废水中微塑料污染的主要原因。通过提高认识、安装更多高科技污水处理厂和减少塑料使用等措施，可以减少污染负荷。
Microplastic concentrations in surface water and wastewater collected from Daugavpils and Liepaja cities in Latvia, as well as Klaipeda and Siauliai cities in Lithuania, were measured in July and December 2021. Using optical microscopy, polymer composition was characterized using micro-Raman spectroscopy. The average abundance of microplastics in surface water and wastewater samples was 16.63 ± 20.29 particles/L. The dominant shape group of microplastics in water was fiber, with dominant colors found to be blue (61%), black (36%), and red (3%) in Latvia. Similar distribution in Lithuania was found, i.e., fiber (95%) and fragments (5%) with dominant colors, such as blue (53%), black (30%), red (9%), yellow (5%), and transparent (3%). The micro-Raman spectroscopy spectra of visible microplastics were identified to be polyethylene terephthalate (33%) and polyvinyl chloride (33%), nylon (12%), polyester (PS) (11%), and high-density polyethylene (11%). In the study area, municipal and hospital wastewater from catchment areas were the main reasons for the contamination of microplastics in the surface water and wastewater of Latvia and Lithuania. It is possible to reduce pollution loads by implementing measures such as raising awareness, installing more high-tech wastewater treatment plants, and reducing plastic use.
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影响因子：
7.4
作者：
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