黄海、东海及其邻近海域沉积物中的典型持久性有机污染物

发布时间：2018-01-05 01:11

本文关键词：黄海、东海及其邻近海域沉积物中的典型持久性有机污染物　出处：《中国科学:化学》2017年11期 　论文类型：期刊论文

【摘要】：有机氯农药、多氯联苯、短链氯化石蜡、多溴联苯醚和全氟化合物等典型持久性有机污染物(POPs)可由释放源经河流输入、土壤表层冲刷、大气沉降等途径进入海洋.由于其疏水性和亲脂性,它们易与有机质含量较高的颗粒物结合,最终埋藏在沉积物中,且被生物吸收后易于富集在脂含量较高的组织中.沉积物上的POPs在一定气象和环境条件下,又可能经再悬浮等方式重新进入水体,造成水体二次污染.POPs具有持久性、生物富集和放大性、长距离迁移以及环境毒性等特点,进入海洋后引起的海洋环境污染问题是影响我国海洋环境安全的一个重要因素.本文总结了黄海、东海及其邻近沿岸海域沉积物中上述几类典型的遗存和新型POPs的污染特征,归纳了其在海洋中的来源、由陆地向海洋的迁移机制,以及部分污染物的生态风险评估,并对未来亟需开展的研究进行了展望.
[Abstract]:Organochlorine pesticides, polychlorinated biphenyls, short chain chlorinated paraffins, PBDEs and perfluorinated compounds and other typical persistent organic pollutants (POPs) can be entered by the release of a source of river, soil erosion, atmospheric deposition and other ways to enter the ocean. Due to its hydrophobic and lipophilic particles, they easily with high content of organic matter the combination of the final burial in sediments, and is easy to be absorbed by organism enriched in fat content higher tissue. Sediments POPs in certain meteorological and environmental conditions, and may by resuspension and re entering the water, causing water pollution two.POPs with persistence, bioaccumulation and amplification. Long distance migration and environmental toxicity characteristics of marine environmental pollution problems caused by entering the ocean is an important factor affecting the security of the marine environment in China. This paper summarizes the Yellow Sea, East China Sea and its adjacent coastal waters The pollution characteristics of these typical residues and new POPs in sediments are summarized, and their sources in the ocean, migration mechanism from land to sea, and ecological risk assessment of some pollutants are summarized, and the future urgent research is prospected.

【作者单位】：中国海洋大学海洋化学理论与工程技术教育部重点实验室;湖南科技职业学院药学院;
【基金】：国家自然科学基金(编号:41276067)资助项目
【分类号】：X592
【正文快照】： 1引言持久性有机污染物(persistent organic pollutants,POPs)因其环境持久性和生态、生物毒性引起了人们的广泛关注.POPs大多具有高脂溶性和半挥发性,容易在食物链中富集和放大,且能够通过大气和水体长距离迁移,对全球环境和人类健康造成巨大威胁[1,2].在过去的几十年,随着全

【相似文献】