Spatio-temporal distribution and leachability of some trace elements (TE) were investigated in sediments the Xiangjiang River, tributary Yangtze River. Based on data collected during 2015–2017, a literature review geoaccumulation indexes, pollution level was highest for Cd, Sb Hg (Igeo > 3). Over period reviewed, TE contamination displayed almost no temporal variation but an obvious spatial ...

This preliminary study focuses on three abandoned sites, located in the communes of Temuco, Villarrica, and Lonquimay, Araucanía Region, Chile. Two sites were classified as illegal landfills one was a former landfill. Seventy-three surface samples taken, which 32 from site S1, 20 S2, 21 S3. The objectives this (1) to establish background values trace metals present soils through different stati...

Mercury (Hg) has been used for millennia in artisanal and small-scale gold mining (ASGM) to extract from ore as an amalgam that is heated recover gold. Since there hardly any sustainable technology can be it, the vast percentage of released Hg finds its way into environment. Currently, ASGM largest source mercury pollution on Earth. listed among top 10 most harmful metals by World Health Organi...

Soil sealing belongs to the most destructive and damaging processes to the soil environment. Soil sealing interrupts or greatly restricts the exchange of matter and energy between the biosphere, hydrosphere, and atmosphere and the soil environment. The aim of this study was to compare the content of heavy metals (Cd, Cr, Cu, Hg, Fe, Ni, Pb, Zn) of Ekranic Technosols by applying indicators such ...

Heavy metal contamination of minesoils is a widespread problem in China. In Pingle manganese mineland in Guangxi (south China), heavy metal concentrations in soils and dominant plants were determined, and soil contamination was assessed with pollution index (Pi) and index of geoaccumulation (I-geo). Pi showed the minesoil was heavily polluted by Cd and slightly polluted by Cr. I-geo showed a se...

Arsenic (As) fractions in the sediments of seven lakes from East Plain Ecoregion and six lakes from Yungui Plateau Ecoregion, China, were investigated. Results indicated that the total As concentrations in sediment samples of lakes of the East Plain Lake Ecoregion are higher than those of Yungui Plateau Lake Ecoregion. Residual As is the main fraction in sediment samples of lakes from both ecor...

Background: This study aimed to evaluate the pollution levels of surface water with heavy metals including Pb, Cd and Cr in Gheshlagh River, western Iran. Methods: Water and sediment were sampled in five monitoring stations with three replicates in time along the river. The concentration of Cr, Pb and Cd in both water and sediment samples were measured with graphite furnace atomic absorption ...

increasing in concentration of heavy metals such as lead, cadmium, nickel, chromium and zinc cause considerable harmful effects on soil and environment. these elements are also hazardous to health of humans and wildlife. petrochemical plants and refineries pollution increase the amount of carcinogenic and tratogenic compounds in environment. the main goal of recent paper is the studying of soil...

Thirty five bottom sediment samples were collected in a grid pattern from Wadi Al-Arab Dam. The present study focuses on the levels of Mn, Fe, Cu, Zn, Cd, total organic matter (TOM) and carbonate content (CO(3)(-2)) in order to assess the extent of environmental pollution and to discuss the origin of these contaminants in sediments of the dam. Concentration data were processed using correlation...

A three-year study, designed to record the level of potentially toxic elements within urban complex in city Volos, Greece, was carried out between 2018 and 2020. For needs aforementioned 62 surface (0–15 cm) soil samples were collected each year (i.e., 186 total) from an area 3.65 km2, average value pseudo-total metal concentration measured. Soil pollution indices, such as contamination factor ...