Uptake and release of organic pollutants in suspended particles (microplastics)

悬浮颗粒（微塑料）中有机污染物的吸收和释放

• 批准号: 269194047
• 负责人: Professor Dr. Peter Grathwohl
• 金额: --
• 依托单位: Arbeitsgruppe Hydrogeochemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/269194047?language=en
• 关键词: Uptake; release; organic; pollutants; suspended

Many anthropogenic pollutants are transported into the environment by particles. For organic compounds organic or carbonaceous particles (soot, coals, chars, organic colloids, etc.) are the most relevant transport vectors. Recently, the wide spread occurrence of microplastic particles in waste water receiving rivers became obvious and it is reasonable to assume that these particles get loaded with organic compounds in waste water (like passive samplers) and have a high potential to transfer pollutants into freshwater ecosystems. This proposal aims at elucidation of accumulation and mass transfer mechanisms of waste water borne organic compounds on different microplastic particle types (polyethylene, mesoporous polystyrene, polyamid fibers). Compounds of concern include organophosphate flame retardants (TCPP), alkylphenols, disinfectants (triclosan) and transformation products (methyltriclosan) as well as polycyclic aromatic hydrocarbons. Since microplastic particles are well characterized in terms of shape and composition the proposed sorption/desorption studies can also help to understand uptake and release kinetics of pollutants on suspended sediments in rivers.

许多人为污染物通过颗粒物进入环境。对于有机化合物，有机或含碳颗粒（烟灰、煤、焦炭、有机胶体等）是最相关的传播媒介。最近，在废水接收河流中广泛存在的微塑料颗粒变得明显，可以合理地假设这些颗粒在废水中装载了有机化合物（如被动采样器），并且具有将污染物转移到淡水生态系统中的高潜力。该提案旨在阐明废水中有机化合物在不同微塑料颗粒类型（聚乙烯，介孔聚苯乙烯，聚酰胺纤维）上的积累和传质机制。关注的化合物包括有机磷酸盐阻燃剂（TCPP）、烷基酚、消毒剂（三氯生）和转化产物（甲基三氯生）以及多环芳烃。由于微塑料颗粒在形状和组成方面具有很好的特征，因此拟议的吸附/解吸研究也有助于了解河流悬浮沉积物对污染物的吸收和释放动力学。

项目成果

Shift in Mass Transfer of Wastewater Contaminants from Microplastics in the Presence of Dissolved Substances.

• DOI: 10.1021/acs.est.7b02664
• 发表时间: 2017-10
• 期刊: Environmental science & technology
• 影响因子: 11.4
• 作者: Sven Seidensticker;C. Zarfl;O. Cirpka;Greta Fellenberg;P. Grathwohl