罗德岛大学Rainer教授-全球水体被动采样网络：全球水体中遗留和当前的有机污染物监测

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入会暗号   

直播时间：2023年8月2日上午10:00（北京时间）

Zoom会议ID：816-9975-7155

Bilibili链接：

https://live.bilibili.com/25002335?broadcast_type=0&;is_room_feed=1&spm_id_from=333.999.0.0（生态环境健康EEH）

本期主持：

袁青彬 副教授

南京大学

EEH期刊青年编委

特邀主讲：

Rainer Lohmann 教授 

美国罗德岛大学

EEH期刊编委

Dr. Rainer Lohmann is a Professor at the University of Rhode Island’s Graduate School of Oceanography. He obtained a degree in Chemical Engineering and a Doctorate in Environmental Science. He is Director of the URI-led Superfund Research Program Center on the Sources, Transport, Exposure and Effects of PFAS (STEEP). His research focuses on the detection, fate and transport of anthropogenic pollutants in the environment, often relying on passive samplers in the process.

Dr. Lohmann sits on the Executive Committee of the U.S. EPA’s Board of Scientific Counselors, and was awarded a Fulbright Fellowship as part of the Fulbright Arctic Initiative III in 2020, and a Alexander-von-Humboldt Fellowship in 2011.

报告摘要Organic contaminants, in particular persistent organic pollutants (POPs), adversely affect water quality and aquatic food webs across the globe. So far, there were no globally consistent information available on concentrations of dissolved POPs in the waters of the world. AQUA-GAPS/MONET was hence initiated to establish a global monitoring program for various dissolved organic pollutants using silicone rubber samplers. For target polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs), contrasting trends were observed. Concentrations of PCBs were, by and large, reflective of past usage, implying limited transport away from source regions. For several groups of OCPs, including hexachlorocyclohexanes (HCHs), dieldrin, and chlordanes, evidence of cold condensation with elevated concentrations in the Arctic region was observed. The presence of breakdown products of endosulfan and DDT seemed to mostly indicate recent usage in the mid latitudes (Lohmann et al., 2023). Different results emerged for polycyclic aromatic hydrocarbons (PAHs) and polycyclic musks. Greatest concentrations of PAHs were typically observed in North American and Europe. PAHs were stronger influenced by proximity to population density, while musks were not regularly detected, but indicated closeness to point sources. Overall, AQUA-GAPS/MONET has demonstrated that passive samplers can be used as a global monitoring tool, with future work aiming to explore regional processes and long-term trends.