掃碼二維碼觀看直播

入會暗號? ?

直播時間：2022年12月01日 7:00pm（北京時間）

Zoom會議ID：816 9975 7155

Bilibili鏈接：

https://live.bilibili.com/25002335?broadcast_type=0&;is_room_feed=1&spm_id_from=333.999.0.0（生態(tài)環(huán)境健康EEH）

本期主題

持久性有機(jī)污染物的全球循環(huán)

The Global Cycling of Persistent Organic Pollutants

本期主持：陳長二?教授

? ? ? ? ? ? 華南師范大學(xué)

特邀主講：Kevin Christopher JONES?教授

? ? ? ? ? ??英國蘭開斯特大學(xué)

Kevin C. Jones, 英國蘭卡斯特大學(xué)杰出教授。本科就讀于倫敦大學(xué)，后于倫敦國王學(xué)院取得博士學(xué)位。Jones教授是環(huán)境污染行為及效應(yīng)領(lǐng)域全球著名科學(xué)家，以有機(jī)污染物“全球污染源解析-區(qū)域與全球環(huán)境過程和行為-區(qū)域與全球尺度模型模擬”為研究主線，從全球尺度監(jiān)測和解析有機(jī)污染物的來源、分布及其毒理效應(yīng)和生態(tài)影響，并評估環(huán)境風(fēng)險，為有機(jī)污染物控制消減政策提供重要支撐。曾任歐洲主要環(huán)境中心之一的英國蘭卡斯特大學(xué)環(huán)境中心（LEC）主任，與許多國際高校及研究機(jī)構(gòu)建立了良好的合作關(guān)系。主要的學(xué)術(shù)貢獻(xiàn)為：（1）建立了第一份持久性有機(jī)污染物（POPs）的全球排放清單；（2）提出了有關(guān)POPs全球遷移的新理論和新觀點，并被學(xué)界普遍接受；（3）開發(fā)了多介質(zhì)遷移模型和新型采樣技術(shù)；（4）開展了有機(jī)污染物的環(huán)境降解行為、暴露和毒性研究。主持完成了130余項研究課題，累計經(jīng)費超過1000萬英鎊。先后在Nature、ES&T等著名期刊上發(fā)表論文近700篇（其中，ES&T論文超200篇），H指數(shù)95，總引用超過30000次。是國際環(huán)境/生態(tài)領(lǐng)域引用最多的學(xué)者之一（前10名）。

報告摘要

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? Persistent organic pollutants (POPs) and related chemicals are fascinating because of their combination of physical- chemical properties and complex effects. Most are man-made, but some also have natural origins. They are persistent in the environment, but they can be broken down variously by biodegradation, atmospheric reactions, and abiotic transformations. They can exist in the gas or particle phases, or both, in the atmosphere and in the dissolved or particulate phases, or both, in water. These combinations mean that they may undergo long-range transport in the atmosphere or oceans, or they may stay close to sources. Hence, emissions from one country are frequently a source of contamination to another country. They are also usually lipophilic, so–combined with persistence–this means they can accumulate in organisms and biomagnify through food chains. We all have a baseline of POPs residues in our tissues, even the unborn fetus via placental transfer and the newly born baby via mother’s milk. POPs in biological systems occur in mixtures, so confirming effects caused by POPs on humans and other top predators is never straightforward. Depending on which papers you read, POPs may be relatively benign, or they could be responsible for key subchronic and chronic effects on reproductive potential, on immune response, as carcinogens, and on a range of behavioral and cognitive end points. They could be a factor behind diseases and conditions which have been increasingly reported and studied in modern societies. In short, they are endlessly fascinating to scientists and a nightmare to regulators and policy makers.