达累斯萨拉姆海岸海洋沉积物中的微塑料:空间分布和表征

Macarius P. Mtega, Matobola J. Mihale, Kessy F. Kilulya
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引用次数: 0

摘要

该研究的目的是确定达累斯萨拉姆沿岸印度洋海滩海洋沉积物中微塑料的空间分布和特征。采用浮选法提取三份样品,消解有机碎屑,利用红外光谱和体视显微镜对样品进行分析。菊地滩微塑料平均浓度为1 cm处700±907粒/m2, 5 cm处859±839粒/m2, 10 cm处590±782粒/m2;在1 cm处为157±15个颗粒/m2,在5 cm处为130±182个颗粒/m2,在10 cm处为16±0个颗粒/m2;在1cm处为167±155个颗粒/m2,在5cm处为104±100个颗粒/m2,在10cm处为70±86个颗粒/m2;Mbezi海滩1cm处为115±108个颗粒/m2, 5cm处为74±82个颗粒/m2, 10cm处为16±0个颗粒/m2。微塑料是聚丙烯、聚乙烯、聚氨酯、聚酰胺、聚氯乙烯、聚对苯二甲酸乙二醇酯和聚四氟乙烯,以纤维、碎片、海绵和颗粒的形式存在。与其他剖面位置相比,沉积物中1 cm处的微塑料污染程度较高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Microplastics in Marine Sediments from Dar es Salaam Coast: Spatial Distribution and Characterization
The purpose of the research was to determine the spatial distribution and characterization of microplastics in marine sediments of beaches along the Indian Ocean of Dar es Salaam coast. The sediment samples were extracted in triplicate using floatation method followed by digestion of organic debris, then analyzed using At-FTIR spectrophotometer and stereomicroscope. The mean concentrations of microplastics for Kijichi Beach were 700 ± 907 particles/m2 at 1 cm, 859 ± 839 particles/m2 at 5 cm and 590 ± 782 particles/m2 at 10 cm; from Palm Beach were 157 ± 15 particles/m2 at 1 cm, 130 ± 182 particles/m2 at 5 cm and 16 ± 0 particles/m2 at 10 cm; from Coco Beach were 167 ± 155 particles/m2 at 1cm, 104 ± 100 particles/m2 at 5 cm, 70 ± 86 particles/m2 at 10 cm; from Mbezi Beach were 115 ± 108 particles/m2 at 1cm, 74 ± 82 particles/m2 at 5 cm and 16 ± 0 particles/m2 at 10 cm. The microplastics were polypropylene, polyethylene, polyurethane, polyamide, polyvinyl chloride, polyethylene terephthalate, and polytetrafluoroethylene, in the form of fibres, fragments, sponges and pellets. The sediments were confirmed to be contaminated with microplastics with high amount at 1 cm compared to other profile location.
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