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The influence of depositional environment on the abundance of microplastic pollution on beaches in the Bristol Channel, UK
Marine Pollution Bulletin ( IF 5.8 ) Pub Date : 2021-01-20 , DOI: 10.1016/j.marpolbul.2021.111997
Daniel R. Wilson , Brendan J. Godley , Gemma L. Haggar , David Santillo , Katy L. Sheen

Microplastic is a ubiquitous environmental contaminant, but large gaps still exist in our knowledge of its distribution. We conducted a detailed assessment of the extent and variability of microplastic pollution in the Bristol Channel, UK. Sand samples were collected between the 5th and 30th August 2017, with microplastic recovered from 15 of the 16 beaches sampled along a coastal extent of ~230 km. In total, 1446 particles of suspected microplastic were extracted using a cascade of sieves and visual identification. The most common microplastics recovered were fragments (74%) and industrial plastic pellets (13%). We used Fourier-Transform Infrared (FTIR) spectroscopy to analyse 25% of recovered particles, 96.5% of which were confirmed as plastic, with polyethylene (61%) and polypropylene (26%) the most common polymers. Our analysis of local beach environments indicates microplastic burdens were higher on lower energy beaches with finer sediments, highlighting the importance of depositional environment in determining microplastic abundance.



中文翻译:

沉积环境对英国布里斯托尔海峡海滩上微量微生物污染的影响

微塑料是一种普遍存在的环境污染物,但是我们对其分布的认识仍然存在很大差距。我们对英国布里斯托尔海峡的微生物污染程度和变异性进行了详细评估。在2017年8月5日至30日之间收集了沙子样本,并从约230公里的沿海地区采样的16个海滩中的15个海滩中回收了微塑性。使用级联筛网和视觉识别技术,总共提取了1446个可疑的塑料微粒。回收的最常见的微塑料是碎片(74%)和工业塑料颗粒(13%)。我们使用傅立叶变换红外(FTIR)光谱分析了25%的回收颗粒,其中96.5%的颗粒被确认为塑料,其中聚乙烯(61%)和聚丙烯(26%)是最常见的聚合物。

更新日期:2021-01-20
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