被动采样研究水体中有机磷阻燃剂等PBT污染物的暴露归趋 | |
Alternative Title | Research on Environmental Exposure and Fate of Organophosphorus Flame Retardants and PBT contaminants in Water Using Passive Sampling Technique |
高小中 | |
Subtype | 博士 |
Thesis Advisor | 马梅 ; 许宜平 |
2019-06 | |
Degree Grantor | 中国科学院生态环境研究中心 |
Place of Conferral | 北京 |
Degree Name | 理学博士 |
Degree Discipline | 环境科学 |
Keyword | 有机磷阻燃剂,Pbt污染物,被动采样,极地水体,非目标筛查 organophosphorus Flame Retardants (Pfrs), Pbt ContamInants, Passive SamplIng, Water In The Polar Region, Non-target screenIng |
Abstract | 有机磷阻燃剂(organophosphorus flame retardants, PFRs)作为一类新型有机污染物,其在环境中的暴露、来源和迁移研究受到广泛的关注;被动采样(Passive sampling)是一项具有多方面优势的新兴环境监测技术,如能测量时间加权平均浓度等。基于此,本研究应用被动采样方法进行了不同水体环境中PFRs及多类PBT(通常指具有持久性(persistence)、生物富集性(bioaccumulation)或毒性(toxicity))有机污染物的暴露、来源和迁移等方面机制研究。结合目前被动采样器无法同时应用于极性和非极性物质的现状,本研究研发了新型的极性和非极性有机物整合被动采样器,其可用于环境中如PFRs这类极性范围宽泛污染物的被动采集。在现场应用中,本研究优化了被动采样的连续流动采样装置和采样方法,改进了被动采样的质量控制、校正方法和数据分析方法,拓展了被动采样应用的范围。随着全球气候变化和PFRs越来越多的发现,PFRs在南北极环境中的暴露研究具有重要意义且亟需进行,而本研究在南北极水环境中均应用被动采样开展了PFRs及多类PBT有机污染物的暴露特性、来源和迁移等机制。取得如下主要成果: |
Other Abstract | Organophosphorus flame retardants (PFRs) are a group of emerging contaminants concerned by worldwide researchers. Passive sampling techniques have been considered as robust tools for monitoring time-weighted average (TWA) concentrations (regarded as bioavailable freely dissolved fraction) of trace-level contaminants in natural and artificial aquatic systems. In this study, the occurrence, source, and transport of PFRs and PBT (persistent, bioaccumulative, toxic) contaminants were studied based on passive sampling techniques. Most PFRs can be passively sampled by triolein-embedded cellulose acetate membranes (TECAM) except for several extremely hydrophilic PFRs. Therefore, we developed a novel passive sampler to simultaneously sample both hydrophilic and hydrophobic organic contaminants in water. We also developed a continuous flow passive sampling device and methods for in situ sampling, improved the quality control, calibration and data analysis methods, and expanded the application of passive sampling. With the intensification of global climate change and increasing pollution of PFRs, it is quite necessary to investigate PFRs and PBT contaminants in polar region. Hence, we studied exposure, sources, and transport of PFRs and PBT contaminants in the Antarctic and the Arctic waters. The major findings of this research are summarized as following: |
Pages | 155 |
Language | 中文 |
Document Type | 学位论文 |
Identifier | http://ir.rcees.ac.cn/handle/311016/42200 |
Collection | 环境水质学国家重点实验室 |
Recommended Citation GB/T 7714 | 高小中. 被动采样研究水体中有机磷阻燃剂等PBT污染物的暴露归趋[D]. 北京. 中国科学院生态环境研究中心,2019. |
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高小中-被动采样研究水体中有机磷阻燃剂等(6844KB) | 学位论文 | 开放获取 | CC BY-NC-SA | Application Full Text |
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