scholarly journals Distributions of Total Mercury and Methylmercury in Dragonflies from a Large, Abandoned Mercury Mining Region in China

2021 ◽  
Author(s):  
Gaoen Wu ◽  
Shunlin Tang ◽  
Jialiang Han ◽  
Chan Li ◽  
Lin Liu ◽  
...  
Keyword(s):  
Total Mercury ◽  
Mining Region ◽  
Mercury Mining

scholarly journals Distributions of total mercury and methylmercury in dragonflies from a large abandoned mercury mining region in China

2021 ◽  
Author(s):  
Gaoen Wu ◽  
Shunlin Tang ◽  
Jialiang Han ◽  
Chan Li ◽  
Lin Liu ◽  
...  
Keyword(s):  
Health Risk ◽  
Total Mercury ◽  
Nitrogen Isotope ◽  
Potential Health ◽  
Mining Region ◽  
Risk Of Exposure ◽  
Total Hg ◽  
Hg Mining ◽  
Mercury Mining ◽  
Pantala Flavescens

Abstract Dragonflies (Order Odonata) are often considered to be biosentinels of environmental contamination. Dragonflies (n = 439) belonging to 15 species of eight genera were collected from an abandoned mercury (Hg) mining region in China to investigate the bioaccumulation of total Hg (THg) and methylmercury (MeHg). The THg and MeHg concentrations in dragonflies varied widely within ranges of 0.06–19 mg/kg and 0.02–5.7 mg/kg, respectively. THg and MeHg were positively correlated with bodyweight (THg: r2 = 0.10, P = 0.000; MeHg: r2 = 0.09, P = 0.000). Significant variations were observed among species, with the highest MeHg value (in Orthetrum triangulare) being 5-fold higher than the lowest (in Pantala flavescens). These variations were consistent with those of nitrogen isotope (δ15N) values. A health risk assessment found hazard quotients for specialist dragonfly-consuming birds of up to 7.2, which is 2.4 times greater than the permissible limit of 3, suggesting a potential health risk of exposure.

Holistic health risk assessment in an artisanal mercury mining region in Mexico

2021 ◽  
Vol 193 (8) ◽  
Author(s):  
Arlette A. Camacho-delaCruz ◽  
Guillermo Espinosa-Reyes ◽  
Carlos A. Rebolloso-Hernández ◽  
Leticia Carrizales-Yáñez ◽  
César A. Ilizaliturri-Hernández ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Holistic Health ◽  
Mining Region ◽  
Mercury Mining

A Comparison of Mercury Contamination in Mussel and Ammocoete Filter Feeders

2010 ◽  
Vol 1 (2) ◽  
pp. 142-145 ◽  
Author(s):  
Jamie B. Bettaso ◽  
Damon H. Goodman
Keyword(s):  
Methyl Mercury ◽  
Total Mercury ◽  
Mercury Contamination ◽  
Teleost Fishes ◽  
Trinity River ◽  
Longitudinal Gradients ◽  
History Of ◽  
Filter Feeders ◽  
The Trinity ◽  
Mercury Mining

Abstract The Trinity River, California, has an extensive history of gold and mercury mining, and recent studies demonstrated uptake of legacy mercury contamination by teleost fishes. We investigated mercury concentrations of larval lampreys (ammocoetes; Entosphenus spp.) and western pearlshell mussels (Margaritifera falcata) in the Trinity River to determine whether these two long-lived and sedentary filter feeders show site-specific differences in uptake of this contaminant. We analyzed ammocoetes from four sites in the Trinity River and one reference site in the Mad River for total mercury and mussels from three of the Trinity River sites for total and methyl mercury. We identified longitudinal gradients in ammocoete total mercury levels and methyl mercury in mussels. We found a 70% increase in total mercury in ammocoetes between two of the sample sites, suggesting a potential point source of contamination. Ammocoetes contained levels of mercury 12 to 25 times those of mussels from the same site. Our data indicate that ammocoetes may be a preferred organism to sample for mercury contamination and ecological effects compared with mussels in the Trinity River.

scholarly journals Total mercury in terrestrial systems (air-soil-plant-water) at the mining region of San Joaquín, Queretaro, Mexico

2013 ◽  
Vol 52 (1) ◽  
pp. 43-58 ◽  
Author(s):  
Sergio Martínez-Trinidad ◽  
Gilberto Hernández Silva ◽  
Juventino Martínez Reyes ◽  
Gregorio Solorio Munguía ◽  
Sara Solís Valdez ◽  
...  
Keyword(s):  
Total Mercury ◽  
Plant Water ◽  
Mining Region

Effects of Selenium on Mercury Bioaccumulation in a Terrestrial food Chain from an Abandoned Mercury Mining Region

2019 ◽  
Vol 102 (3) ◽  
pp. 329-334 ◽  
Author(s):  
Guangle Qiu ◽  
Kasun S. Abeysinghe ◽  
Xiao-Dong Yang ◽  
Zhidong Xu ◽  
Xiaohang Xu ◽  
...  
Keyword(s):  
Food Chain ◽  
Terrestrial Food Chain ◽  
Mining Region ◽  
Mercury Bioaccumulation ◽  
Mercury Mining

Cheratte-Visé: a Muslim village in Wallonia

2005 ◽  
Vol 2 (3) ◽  
pp. 308-344
Author(s):  
Christophe Parthoens ◽  
Dina Sensi ◽  
Altay Manco
Keyword(s):  
Social Integration ◽  
Host Country ◽  
Local Authority ◽  
Working Population ◽  
Mining Region ◽  
The Sixties ◽  
Local Councillors ◽  
Turkish Community

This article aims to describe the processes leading to social integration of a Turkish community at the beginning of the sixties who were resident in a mining region in Belgium. The stages through which this immigrant working population had to go through are described here: and how it managed, within a third of century, to become established in the district, to structure itself in associations, to be recognized by the local authority and the institutional fabric of the host country, and finally, to sit down at the same table with the local councillors.

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