An overall and comparative ecological risk assessment of heavy metal pollution (including Cu, Zn, Pb, Cd, Hg, Cr, As, and Ni) in surface sediments was conducted for six major shallow freshwater lakes (Taihu Lake, Chaohu Lake, Nansihu Lake, Dongting Lake, Poyang Lake, and Hongze Lake) in China. A spatial database with 339 sediment samples was created through an extensive literature survey. Conse...

.Abstract-Mat~hing'syno~tically collected chemical and laboratory bioassay data (n = 1.068) were compiled from analyses of surficial sediment samples collecred during 1990 to 1993 to evaluate the predictive ability of sediment quality guidelines (SQGs). specifically, effects range-low (ERL). effects range-median (ERM). threshold effects level (TELL and probable eifects level (PEL) values. Dam w...

This study verified pollution levels through evaluation of the Sediment Quality Guidelines (SQGs), load index (PLI), and potential ecological risk (PERI) by analyzing concentrations heavy metals in sediments an urban‒agricultural watershed Yeongsan River basin, South Korea. Statistical analyses were performed to determine relationships between land use, sources identified. For spatial distribut...

The river environment is complex and receives a variety of contaminants from numerous sources that are persistent, bioaccumulative, toxic. distribution, source, contamination, ecological risk status Zn, Pb, Cu, Ni, Cr, Cd were evaluated in the surface sediments at 45 sites on Moyang Jian rivers Western Guangdong, China. Single pollution indices, including contamination factor (CF) enrichment (E...

Risk analysis of urban aquatic systems due to heavy metals turns significant due to their peculiar properties viz. persistence, non-degradability, toxicity, and accumulation. Akkulam Veli (AV), an urban tropical lake in south India is subjected to various environmental stresses due to multiple waste discharge, sand mining, developmental activities, tourism related activities etc. Hence, a compr...

To protect terrestrial ecosystems and humans from contaminants many countries and jurisdictions have developed soil quality guidelines (SQGs). This study proposes a new framework to derive SQGs and guidelines for amended soils and uses a case study based on phytotoxicity data of copper (Cu) and zinc (Zn) from field studies to illustrate how the framework could be applied. The proposed framework...

Selected heavy metals (Cr, Cu, Ni, Pb and Zn) in surface sediments from the coastal Shandong Peninsula (Yellow Sea) have been determined to evaluate the spatial distribution and potential ecological risk. Results showed that heavy metal concentrations in the sediments generally met the criteria of China Marine Sediment Quality. However, both the enrichment factor (EF) and geoaccumulation index ...

This study detected eight heavy metal (Cu, Pb, Zn, Ni, Mn, Fe, Cr, Al) and one metalloid (As) amounts in the sediment of Meyil Lake. The findings obtained were compared with limit values quality guidelines (SQGs) such as PEL (probable effect level), TEL (threshold ERL (effects range low) ERM median). In addition its probable toxic effects investigated via different evaluation methods. As a resu...