在现实的热带海洋气候条件下,聚乙烯降解和重金属浸出

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Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis

Published on: July 1, 2017

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Evonne Tan¹, Meng Chuan Ong², Norlaila Binti Mohd Zanuri¹

¹Centre for Marine and Coastal Studies (CEMACS), Universiti Sains Malaysia, 11800, Gelugor, Penang, Malaysia.

Marine environmental research

|August 24, 2023

概括

全球变暖和海洋酸化并没有显著影响聚乙烯 (PE) 颗粒中的重金属液. 然而,这些条件加速了微塑料的降解,可能会增加重金属粘附和海洋污染.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
海洋学海洋学海洋学

背景情况:

微塑料在海洋环境中越来越令人担忧.
全球变暖和海洋酸化可能会影响微塑料的毒性.
聚乙烯 (PE) 颗粒是一种常见的微塑料污染形式.

研究的目的:

为了研究温度和pH对重金属 (Al,Zn,Cr,Cu,Pb,As) 的影响,从PE颗粒中出海水.
了解环境因素在微塑料相关重金属污染中的作用.
评估模拟热带气候对PE颗粒及其重金属负载的影响.

主要方法:

在受控的温度和pH条件下,从PE颗粒中出六种重金属的试验.
分析海水中的重金属度随着时间的推移 (24,120,240小时).
场发射扫描电子显微镜 (FESEM) 分析以评估聚合物表面变化.

主要成果:

在24小时内观察到重金属漏,大多数度随着时间的推移而下降,除了.
统计分析表明,温度和pH值对PE颗粒中的重金属整体液没有显著的影响.
费塞姆发现,温度和pH显著影响聚合物老化和表面降解,特别是在温暖的酸性条件下.

结论:

虽然温度和pH值不会直接增加重金属的出,但它们会加速微塑料的降解.
在热带条件下降解的PE颗粒可能会增强重金属吸附,作为污染的载体.
需要对金属行为和微生物活性进行进一步的研究,以充分了解热带气候条件下的微塑料毒性.

关键词:

场辐射扫描电子显微镜 (FESEM)重金属 (HM) 是一种重金属.微塑料 (MPs) 是一种微塑料.聚乙烯 (PE) 是一种聚乙烯.这是一个热带热带.

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