论文部分内容阅读
Environmental pollutants and contaminants generate reactive oxygen species(ROS)both in vitro and in vivo.
Highly Sensitive and Selective Detection and Molecular Imaging of Reactive Oxygen Species
【摘 要】
：
Environmental pollutants and contaminants generate reactive oxygen species(ROS)both in vitro and in vivo.
【机 构】
：
Morningside Laboratory for Chemical Biology and Department of Chemistry The University of Hong Kong,
【出 处】
：
NCEC2019第十届全国环境化学大会
【发表日期】
：
2019年7期
其他文献
The fate of microplastics(plastic fragments with particle size < 5 mm,MPs)in the marine environment is increasingly well studied while insufficient knowledge about whose effects on terrestrial ecosyst
Microplastic pollution is now getting more and more attention from both the academia and the public due to its potential environmental and human health effect.
环境中的塑料垃圾经过河流的运输,最终汇集到海洋中。经过阳光的暴晒、海浪的拍打以及海沙的作用,这些塑料会破碎成粒径更小的颗粒1,可达微米级甚至纳米级。此外,水体中广泛存在的溶解性有机质(NOM)和盐离子2,会与这些纳米级塑料(NPs)相互作用,影响其赋存状态,进而影响其分布、迁移转化、生物有效性和毒性。
随着大气和水流的运动,纳米塑料(Nanoplastics,NPs)已经遍布了全球的各个角落.它们能够在水生生物体内富集,甚至穿透细胞膜,对生物体造成潜在的伤害和毒性.本课题从个体水平和生化水平探究了纳米塑料对大型溞(Daphnia magna,D.magna)的毒性终点,以揭示携带不同官能团的聚苯乙烯(polysytrene,PS)纳米塑料的毒性机制.在本课题中,大型溞被暴露于携带不同官能团的聚苯
城市湖泊是指位于城市城区或近郊的中小型湖泊，是重要的水资源和旅游资源。近年来，随着社会经济的发展，城市湖泊面临严重的环境污染问题，特别是重金属污染。塑料用途广泛，生产量巨大，废弃塑料能在物理、化学或生物等作用下分解成微小的塑料颗粒(粒径＜5mm)，即微塑料。
目前,我国已成为全球最大的塑料再生利用国,2016 年再生利用塑料量达到1000 万吨以上。塑料及其伴随的添加剂通常经历“产品-废物-新产品”的循环过程,因此,在未来相当长的时间内,废弃的塑料垃圾和再生塑料产品仍会持续向环境中释放PBDEs,而DPs、DBDPE、BTBPE 等阻燃剂的使用持续上升,这些有机污染物所带来的环境污染和生态风险仍有加重的趋势。
OH Radical-Initiated Reactions Related to O3 and SOA Formation in the Gas and Aqueous Phase in the A
Among free radicals in the atmosphere,OH radicals are known to play a central role both in the gas and aqueous phase.
Global emissions of non-methane hydrocarbons from the biosphere and human activities account for 1300 Tg carbon per year [1].
As chemical mechanisms grow larger,and more complex,traditional methods of time-series and Rate of Production and Loss Analysis start to break down.
Reactive oxygen species(ROS)and other related free radicals exist widely in the atmospheric environment.