据悉，在旨在减少持久性有机污染物 (POPs) 排放的监管努力之后，对持久性有机污染物的全球监测得到了加强。
在此背景下，研究团队收集了1980-2023年期间报告的10,000多个POP测量值，以评估这些立法措施在全球海洋环境中的有效性。虽然各海洋区域遗留的持久性有机污染物浓度普遍呈明显下降趋势，表明海洋控制措施取得了成功，但北冰洋及其边缘海域的持久性有机污染物水平却有所上升。这种增加表明，污染物通过洋流从中纬度地区向北迁移到极地地区。
尽管全球都在努力减少排放，但污染物向北极地区的持续运输和积累可，能会产生重大的生态影响。研究结果强调，要解决这些环境挑战，需要彻底了解POP动力学，包括响应时间、多相输送和生物地球化学循环。对这些过程的持续研究，对于准确绘制它们在海洋系统内的分布和时间变化是至关重要的。
附：英文原文
Title: Exploring global oceanic persistence and ecological effects of legacy persistent organic pollutants across five decades
Author: Xue Zhang, Li Li, Zhiyong Xie, Jianmin Ma, Yi-Fan Li, Minghong Cai, Nan-Qi Ren, Roland Kallenborn, Zi-Feng Zhang, Xianming Zhang, Derek C.G. Muir
Issue&Volume: 2024-09-25
Abstract: Global monitoring of persistent organic pollutants (POPs) has intensified following regulatory efforts aimed at reducing their release. In this context, we compiled over 10,000 POP measurements, reported from 1980 to 2023, to assess the effectiveness of these legislative measures in the global marine environments. While a general decreasing trend in legacy POP concentrations is evident across various maritime regions, highlighting the success of source control measures, the Arctic Ocean and its marginal seas have experienced a rise in POP levels. This increase suggests the northward migration of pollutants via ocean currents from mid-latitude regions to polar areas. Despite global efforts to reduce emissions, the continued transport and accumulation of pollutants to the Arctic regions may have substantial ecological impacts. Addressing these environmental challenges demands a thorough understanding of POP dynamics, including response times, multiphase transport, and biogeochemical cycling. Continued research into these processes is vital to accurately map their distribution and temporal variations within marine systems.
DOI: ado5534
