Persistent organic pollutants (POPs) in marine sediments of the Arctic fjord Kongsfjorden, Svalbard Islands

IF 5.3 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin Pub Date : 2025-02-01 DOI:10.1016/j.marpolbul.2024.117407

Tanita Pescatore , Jasmin Rauseo , Francesca Spataro , Nicoletta Calace , Luisa Patrolecco

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引用次数: 0

Abstract

New data on the occurrence of POPs, including polychlorinated biphenyls (PCBs) and legacy pesticides (LPs), along with current-use pesticides (CUPs) in the surface marine sediments of Kongsfjorden over five years (2018–2022) are presented. LPs examined were p,p’-dichlorodiphenyltrichloroethane (DDT), p,p’-l,l-dichloro-2,2-bis(chlorophenyl)ethylene (DDE), and hexachlorocyclohexane (HCH), while CUPs included chlorpyrifos (CPF), dacthal (DAC), and endosulfan (ENDO). LPs (0.12–0.59 ng/g) were in higher amounts than CUPs (0.01–0.15 ng/g). The first data on CPF (0.003–0.07 ng/g) and DAC (0.001–0.06 ng/g) in Arctic marine sediments were obtained. Σ34PCBs (0.25–0.62 ng/g) were found with a dominance of lower molecular weight congeners, probably transported via atmospheric currents.

A general increasing trend in concentrations of target compounds was observed over the study period. Overall, higher concentrations of these compounds were found near the tidal glaciers, suggesting that glacier meltwater plays a role in releasing contaminants. However, the potential influence of oceanic currents on their transport cannot be ruled out.

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斯瓦尔巴群岛北极峡湾 Kongsfjorden 海洋沉积物中的持久性有机污染物 (POP)。

本文介绍了孔斯峡湾表层海洋沉积物中持久性有机污染物（包括多氯联苯（PCBs）和遗留农药（LPs））以及当前使用的农药（CUPs）在五年（2018-2022 年）内出现的新数据。考察的 LPs 包括 p,p'-二氯二苯基三氯乙烷（DDT）、p,p'-l,l-二氯-2,2-双（氯苯基）乙烯（DDE）和六氯环己烷（HCH），而 CUPs 包括毒死蜱（CPF）、达克沙尔（DAC）和硫丹（ENDO）。LP（0.12-0.59 纳克/克）的含量高于 CUP（0.01-0.15 纳克/克）。首次获得了北极海洋沉积物中 CPF（0.003-0.07 纳克/克）和 DAC（0.001-0.06 纳克/克）的数据。发现的 Σ34PCBs （0.25-0.62 纳克/克）以低分子量同系物为主，可能是通过大气气流迁移而来。在研究期间，目标化合物的浓度总体呈上升趋势。总体而言，这些化合物在潮汐冰川附近的浓度较高，表明冰川融水在释放污染物方面发挥了作用。不过，也不能排除洋流对其迁移的潜在影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Marine pollution bulletin 环境科学-海洋与淡水生物学

CiteScore

10.20

自引率

15.50%

发文量

1077

审稿时长

68 days

期刊介绍： Marine Pollution Bulletin is concerned with the rational use of maritime and marine resources in estuaries, the seas and oceans, as well as with documenting marine pollution and introducing new forms of measurement and analysis. A wide range of topics are discussed as news, comment, reviews and research reports, not only on effluent disposal and pollution control, but also on the management, economic aspects and protection of the marine environment in general.