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汞（Hg）具有高毒性、生物累积性和长距离迁移性，是一类备受关注的全球性污染物。经自然和人为排放进入环境，Hg的生态风险不仅取决于浓度，还与其化学形态、生物可利用性及迁移转化过程有关。其中，水环境是Hg生物地球化学循环的关键介质，会发生一系列物理、化学及生物的迁移转化过程。藻类作为水生生态系统的初级生产者，虽然个体微小，但具有生物量大、生长周期短、分布广泛等特征，使其在水环境Hg的吸附/吸收、氧化/还原、甲基化/去甲基化等过程中发挥着重要作用。因此，理解藻类在生物地球化学循环中的作用，对评估水环境Hg污染风险具有重要意义，并可为相关修复策略的制定提供理论依据。本综述系统总结了藻类对水环境Hg迁移转化过程影响的最新进展，重点阐述藻类影响Hg富集、形态转化与生态效应的机制，以期为深入理解Hg的生物地球化学循环提供参考。
Abstract：Due to the high toxicity,bioaccumulation potential,and long-range transport capacity,mercury(Hg)and its compounds have been deemed as a global pollutant of serious concern. After entering into environment via natural and anthropogenic emission, the ecological risk of Hg in the environment depends not only on its total concentration,but also on its chemical species, bioavailability, and transformation processes. The aquatic environment serves as a key medium in the biogeochemical cycling of Hg,where various physical,chemical,and biological processes can drive transformation and transport of Hg.The small sized algae with large biomass,short life cycles,and wide distribution acts as primary producers,playing important roles in affecting absorption/adsorption,oxidation/reduction, methylation/demethylation of Hg in aquatic environment. Therefore,understanding the effects of algae on the biogeochemical cycling of Hg is essential for accurately assessing the risk of Hg pollution and developing effective remediation strategies in aquatic environment. This review systematically summarizes impacts of algae on transformation and transport of Hg in recent studies, with focus on their roles in Hg bioaccumulation,transformation mechanisms,and ecological effects,aiming to shed new light on further understanding of Hg biogeochemical cycling.
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基本信息:
DOI：10.16389/j.cnki.cn42-1737/n.2026.05.004
中图分类号:X142
引用信息:
[1]王翌昕,刘妍东,高家晖,等.藻类在汞生物地球化学循环中作用的研究进展[J].江汉大学学报(自然科学版)().DOI:10.16389/j.cnki.cn42-1737/n.2026.05.004.
基金信息:
湖北省教育厅科学技术研究项目（Q20244409）; 国家自然科学基金青年项目（42307332,22506062）
2026-09-28
2026-09-28
2026-09-28