The relative contributions of proximity to mercury sources and trophic ecology to realized axial muscle mercury concentrations were explored for three deep-water chondrichthyans (Etmopterus princeps, Centroscymnus coelolepis, and Hydrolagus affinis), two species of which are harvested for human consumption. Samples were taken at three North Atlantic Ocean locations: the Azores, the Charlie Gibbs Fracture Zone, and the Bear Seamount. Despite the long distances between anthropogenic sources and the sampling locations, all species from all locations had muscle mercury concentrations exceeding the United States human health screening value of 0.3 mg/kg wet weight. Proximity to anthropogenic sources was not an obvious determinant of these elevated concentrations. Generally, mercury concentrations appeared to increase with increased dependence on benthic versus pelagic food sources (as indicated by interspecies differences in δ(13)C), and with higher position in the trophic web (as indicated by differences in δ(15)N).
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s00244-010-9584-4 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Seasonal Changes in the Elemental Composition of Five Valuable Fish Species () from Bozcaada, North Aegean Sea: A Health Risk and Nutritional Benefit Assessment.
Foods
January 2025
Department of Seafood Processing Technology, Faculty of Fisheries, Cukurova University, Adana 01330, Balcali, Türkiye.
This study investigates the seasonal variations in the elemental composition of five economically valuable fish species from Bozcaada, North Aegean: red seabream (), gilthead seabream (), saddled seabream (), white seabream (), and common dentex (), with a focus on both essential minerals and toxic metals. Fish samples ( = 10 per species per season) were collected across four seasons, and their weights and lengths were recorded. The concentrations of elements such as calcium, potassium, magnesium, phosphorus, copper, iron, manganese, zinc, chromium, nickel, selenium, cadmium, and mercury were analyzed using Inductively Coupled Plasma Mass Spectrometry (ICP-MS).
View Article and Find Full Text PDFSoil toxicity, biochemical and histopathological alterations of the cattle egret (Bubulcus ibis) liver at Sharkia province, Egypt, under soil pollution.
Environ Sci Pollut Res Int
January 2025
Department of Zoology, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt.
The residual concentration of pesticides and heavy metals (arsenic, mercury, selenium, lead, cadmium, and aluminum) was measured in the soil and the cattle egret (Bubulcus ibis) liver from two localities at Sharkia Governorate, Egypt. The pesticide residues have taken the following pattern: chlorpyrifos > metalaxyl > piperonyl butoxide > thiophanate-methyl, in the soil. The residual concentration of pesticides was greater in the soil at Kafr El-Ashraf village (agricultural site) than at El-Qanayat city (garbage site) during the summer season of 2021 compared with the winter season of 2022.
View Article and Find Full Text PDFContamination and ecological risk of heavy metals in sediments of urban rivers in a typical economic development zone, southern China.
J Environ Sci (China)
July 2025
Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China. Electronic address:
Urban rivers are one of the main water sources for local residents. However, the rapid industrialization and urbanization caused serious heavy metals pollution in urban rivers, which posed harmful impact on human health and ecosystem. In this study, 134 sediment samples were collected from urban rivers in a typical Economic and Technological Development Zone (ETDZ) to evaluate the contamination status, ecological risk, biotoxicity, and potential source of 8 heavy metals including arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), mercury (Hg), nickel (Ni), plumbum (Pb), and zinc (Zn).
View Article and Find Full Text PDFRapid screening of inorganic arsenic in groundwater on-site by a portable three-channel colorimeter.
J Environ Sci (China)
July 2025
Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; Shenzhen Key Laboratory of Precision Measurement and Early Warning Technology for Urban Environmental Health Risks, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China. Electronic address:
Rapid screening of inorganic arsenic (iAs) in groundwater used for drinking by hundreds of millions of mostly rural residents worldwide is crucial for health protection. Most commercial field test kits are based on the Gutzeit reaction that uses mercury-based reagents for color development, an environmental concern that increasingly limits its utilization. This study further improves the Molybdenum Blue (MB) colorimetric method to allow for faster screening with more stable reagents.
View Article and Find Full Text PDFTwenty years of studying the origins and fate of atmospheric mercury over the Mediterranean Sea.
Sci Total Environ
January 2025
CNR-Institute of Atmospheric Pollution Research, Rende Division, UNICAL Polifuzionale, Rende 87036, CS, Italy.
This study provides a review of 13 oceanographic campaigns between 2000 and 2017 to measure Hg in the Mediterranean, highlighting major findings from measurement and modelling activities during the Med-Oceanor program. The initial campaigns showed that high concentrations of RGM could be found far from industrial source regions and the observed daily variation in concentration, with peaks at midday and lower concentrations during darkness gave the first indications that photochemically mediated oxidation reactions were producing RGM in the MBL. Later atmospheric chemistry modelling studies showed the feasibility of Hg oxidation by bromine containing oxidants, which are released as a result of the acidification of sea salt aerosols in the Marine Boundary Layer (MBL).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!