The alteration of hydrologic condition of Three Gorges Reservoir (TGR) after impoundment has caused numerous environmental changes. This study investigated the distribution, accumulation and potential sources of the seldom monitored trace elements (SMTEs) in sediments from three tributaries (ZY, MX and CT) and one mainstream (CJ) in TGR during different seasons. The average contents of most SMT...

the chemical speciation of heavy metals (arsenic, chromium, copper, lead, zinc and tin) in the sediments offormer tin mining catchment bestari jaya, peninsular malaysia was determined by using the latest version of the community bureau of reference, usually called the bcr 3-step sequential extraction procedure. furthermore, a fourth step was introduced for digestion and analysis of the residue....

Recent decades have witnessed a danger to food security as well human health because of pollutants’ negative impact on crop quality. An accurate estimate the heavy metal concentrations in Egypt’s north Nile Delta is required lower high concentration levels soil means develop remediation strategy that stabilizes metals contaminated soil. Using geo-accumulation index (I-geo), contamination factor...

The prediction of geo-graphical location at which an image is taken is drawing increasing attention in recent research. However, one major limitation of most current research is that it focuses mostly on improving the geolocation prediction performance while ignoring the problem of index size, which is helpful in saving storage space. Traditional image retrieval index reduction approach can be ...

Mangroves acted as sinks of terrestrial pollutants, but the occurrence and contamination rare earth elements (REEs) in urban mangroves lacked systematic evaluation. In rapidly developing Shenzhen, China, four typical were selected to determine REEs mangroves, including Baguang mangrove (BGM) Futian (FTM) featured with ecological preserve central business district, respectively; Xixiang (XXM) Sh...

Heavy metal pollution at tourist attractions centers has caused widespread concern. In this study, the concentration of seven heavy metals (Pb, Cu, Cr, Zn, Ni, As, and Mn) in surface soil Lushan scenic area was measured, their characteristics were assessed using Nemerow comprehensive index geo-accumulation index; further, human non-carcinogenic carcinogenic risks evaluated by U.S. Environmental...

The distribution, enrichment, accumulation, and potential ecological risk of copper (Cu) in the surface sediments of northern Kaohsiung Harbor, Taiwan were investigated. Sediment samples from 12 locations of northern Kaohsiung Harbor were collected and characterized for Cu, aluminum, water content, organic matter, total nitrogen, total phosphorous, total grease and grain size. Results showed th...