ArticleEnvironmental science and pollution research international2016
Persistent Hg contamination and occurrence of Hg-methylating transcript (hgcA) downstream of a chlor-alkali plant in the Olt River (Romania).
Article in Environmental science and pollution research international, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Methane cycling microbes are important predictors of methylmercury accumulation in rice paddies.Applied and environmental microbiology · 2026Article
- Functional Genes and Transcripts Indicate the Existent and Active Microbial Mercury-Methylating Community in Mangrove Intertidal Sediments of an Urbanized Bay.Microorganisms · 2024Article
- Redox gradient shapes the abundance and diversity of mercury-methylating microorganisms along the water column of the Black Sea.mSystems · 2023Article
- The Influence of the Degree of Forest Management on Methylmercury and the Composition of Microbial Communities in the Sediments of Boreal Drainage Ditches.Microorganisms · 2022Article
- Expanded Phylogenetic Diversity and Metabolic Flexibility of Mercury-Methylating Microorganisms.mSystems · 2020Article
- Biotic formation of methylmercury: A bio-physico-chemical conundrum.Limnology and oceanography · 2020Review
- Deltaproteobacteria and Spirochaetes-Like Bacteria Are Abundant Putative Mercury Methylators in Oxygen-Deficient Water and Marine Particles in the Baltic Sea.Frontiers in microbiology · 2020Article
- Mercury methylating microbial communities of boreal forest soils.Scientific reports · 2019Article
- Methanogens and Iron-Reducing Bacteria: the Overlooked Members of Mercury-Methylating Microbial Communities in Boreal Lakes.Applied and environmental microbiology · 2018Article
- Diversity of microbial communities potentially involved in mercury methylation in rice paddies surrounding typical mercury mining areas in China.MicrobiologyOpen · 2018Article
- Vertical Distribution of Total Mercury and Mercury Methylation in a Landfill Site in Japan.International journal of environmental research and public health · 2018Article
- Bacterial periphytic communities related to mercury methylation within aquatic plant roots from a temperate freshwater lake (South-Western France).Environmental science and pollution research international · 2017Article
- Environmental quality assessment of reservoirs impacted by Hg from chlor-alkali technologies: case study of a recovery.Environmental science and pollution research international · 2016Article
- Development and Validation of Broad-Range Qualitative and Clade-Specific Quantitative Molecular Probes for Assessing Mercury Methylation in the Environment.Applied and environmental microbiology · 2016Article
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Chlor-alkali plants using mercury (Hg) cell technology are acute point sources of Hg pollution in the aquatic environment. While there have been recent efforts to reduce the use of Hg cells, some of the emitted Hg can be transformed to neurotoxic methylmercury (MeHg). Here, we aimed (i) to study the dispersion of Hg in four reservoirs located downstream of a chlor-alkali plant along the Olt River (Romania) and (ii) to track the activity of bacterial functional genes involved in Hg methylation. Total Hg (THg) concentrations in water and sediments decreased successively from the initial reservoir to downstream reservoirs. Suspended fine size particles and seston appeared to be responsible for the transport of THg into downstream reservoirs, while macrophytes reflected the local bioavailability of Hg. The concentration and proportion of MeHg were correlated with THg, but were not correlated with bacterial activity in sediments, while the abundance of hgcA transcript correlated with organic matter and Cl(-) concentration, indicating the importance of Hg bioavailability in sediments for Hg methylation. Our data clearly highlights the importance of considering Hg contamination as a legacy pollutant since there is a high risk of continued Hg accumulation in food webs long after Hg-cell phase out.
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