Tracking toxic threats: Bioaccumulation of persistent organic pollutants in benthic macroinvertebrates of the Gulf of Khambhat, India

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

Marine pollution bulletin Pub Date : 2025-05-26 DOI:10.1016/j.marpolbul.2025.118207

Pooja Thathola , Moumita Bhowmik , Soumya Haldar

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Abstract

The Gulf of Khambhat (GoKh), India is impacted by chemical pollution from industrial and anthropogenic activities. This study assesses the presence and bioaccumulation of persistent organic pollutants (POPs) in coastal waters, sediments, and benthic macroinvertebrates (Polychaeta, Gastropoda, Malacostraca). Four POPs groups such as polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), α-hexabromocyclododecane (α-HBCD), and bromodiphenyl ethers (BDE) were analysed, with focus on 24 target compounds. PAHs were the most prevalent, with concentrations reaching 8.08 μg/mL in water, 12.15 μg/g in sediment, and 2.07 μg/g in benthic organisms. PCBs, ꭤ- HBCD, and BDE were detected at lower levels. Bioaccumulation factors (BSAF: 0.02–0.42; BSF: 0.01–0.29) indicated significant pollutant uptake, particularly in polychaetes and gastropods. These findings establish baseline data on POPs contamination in GoKh, highlighting the vulnerability of intertidal ecosystems and the need for mitigation strategies.

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追踪有毒威胁：印度康巴特湾底栖大型无脊椎动物体内持久性有机污染物的生物积累

印度康巴特湾（GoKh）受到工业和人为活动的化学污染的影响。本研究评估了持久性有机污染物（POPs）在沿海水域、沉积物和底栖大型无脊椎动物（多毛纲、腹足纲、马腹足纲）中的存在和生物积累。分析了多环芳烃（PAHs）、多氯联苯（PCBs）、α-六溴环十二烷（α-HBCD）和溴联苯醚（BDE）等4种持久性有机污染物，重点分析了24种目标化合物。多环芳烃含量最高，水体、沉积物和底栖生物的浓度分别为8.08 μg/mL、12.15 μg/g和2.07 μg/g。多氯联苯、ꭤ- HBCD和BDE的检测水平较低。生物蓄积因子(BSAF: 0.02 ~ 0.42；BSF值为0.01 ~ 0.29)，表明多毛纲动物和腹足类动物对污染物有显著的吸收。这些调查结果确定了戈赫持久性有机污染物污染的基线数据，突出了潮间带生态系统的脆弱性和制定缓解战略的必要性。

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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.