Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
This work reports the quantification of total mercury in sediments collected in periods with and without rain from the Joanes River, Bahia, Brazil. Determinations were made using Direct Mercury Analysis (DMA), the accuracy of which was confirmed with two certified reference materials. The highest total mercury concentrations were found at the sampling point close to commercial areas and large residential condominiums. On the other hand, the lowest levels were found in the site close to a mangrove region. The geoaccumulation index was applied to the total mercury results, evidencing low contamination in the region studied. The contamination factor showed that of the seven stations investigated, four samples collected in the rainy season showed moderate contamination. The results of the ecological risk assessment were utterly consistent with the contamination factor data. This study showed that the smaller sediment particles concentrate more mercury, corroborating what has been predicted by the adsorption processes.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.marpolbul.2023.115083 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Evaluation of Mercury Contamination in Chickens (Gallus gallus) and Soils in an Artisanal Gold Mining Area in San Martin De Loba, Bolivar, Colombia.
Bull Environ Contam Toxicol
September 2025
Environmental and Computational Chemistry Group, School of Pharmaceutical Sciences, University of Cartagena, Zaragocilla Campus, Cartagena, 130015, Colombia.
The use of mercury (Hg) in artisanal gold mining in San Martin de Loba (SML), Bolivar, Colombia, poses significant environmental and health risks. This study aimed to evaluate total mercury (T-Hg) concentrations in chicken feathers (Gallus gallus) and soils from SML, and compare them with those obtained in a reference site without mining activity (Arjona). A total of 40 chickens and 30 soil samples were taken in SML, along with 31 chickens and 21 soil samples in Arjona.
View Article and Find Full Text PDFExposure to silver, aluminium, arsenic, cadmium, mercury, nickel and lead from food in Swedish children, adolescents and adults.
Food Chem Toxicol
September 2025
Division for Laboratory Investigation and Analysis, Swedish Food Agency, Uppsala, Sweden.
Total diet studies monitor exposure to contaminants from food. This study investigates the intakes of the harmful metals silver (Ag), aluminium (Al), arsenic (As), inorganic As, cadmium (Cd), mercury (Hg), nickel (Ni) and lead (Pb) in Swedish young children, adolescents and adults, and relate them to health-based guidance values (HBGV). Whereas intakes of Ag and Al did not give rise to any concern for adverse health effects, most of the young children had intakes of inorganic As (≥97%), Cd (≥71%) and Ni (≥92%, for acute effects) above the HBGV set by European Food Safety Authority.
View Article and Find Full Text PDFJaponica is considered one of the better tasting varieties, so it is important to balance the quality and taste of japonica rice produced by moderate processing. This study analyzed the changes in bioactive components, heavy metal elements, and sensory quality of northern japonica rice after gradient milling, and constructed a comprehensive quality evaluation model for japonica rice with different degrees of milling. The results showed that as the degree of milling (DOM) increased from 0% to 10%, the bioactive components in japonica rice decreased, with dietary fiber (3.
View Article and Find Full Text PDFMulti-component tree biomass approach to estimate litterfall Hg deposition in a warm-temperate coniferous forest in southern Europe.
Environ Res
September 2025
Universidade de Vigo, Departamento de Bioloxía Vexetal e Ciencia do Solo, Área de Edafoloxía e Química Agrícola, Facultade de Ciencias,32004 Ourense, Spain; Instituto de Agroecoloxía e Alimentación (IAA), Universidade de Vigo, Campus Auga, 32004 Ourense, Spain. Electronic address: edjuanca@uv
Terrestrial ecosystems are a key component in the biogeochemical cycle of Hg. About 50% of atmospheric Hg is captured in the system because of the ability of vegetation to retain and subsequently transfer it to the soil surface through litterfall. In a stand dominated by Scots pine (Pinus sylvestris), the widest spatially distributed tree species in the northern hemisphere and the second worldwide, this two-year study evaluated monthly the litterfall Hg deposition fluxes (FHg) through all litterfall fractions involved (needles, twigs, bark, miscellaneous, and male inflorescences).
View Article and Find Full Text PDFPrevalence of White Coat Hypertension Among Surgical Patients at a Tertiary Care Hospital: A Cross-Sectional Observational Study.
Cureus
August 2025
Department of Anesthesiology, Aga Khan University Hospital, Karachi, PAK.
Background The prevalence of white coat hypertension (WCH) among surgical patients is a significant concern. WCH refers to a condition where individuals with normal blood pressure at home exhibit elevated readings when measured at a medical facility, affecting clinical decision-making processes. The aim is to determine the prevalence of WCH among patients undergoing elective surgery at a tertiary care hospital and to evaluate its association with demographic factors, surgical type, and perioperative waiting time.
View Article and Find Full Text PDF