Heavy metal fractionation and ecological risk implications in the intertidal surface sediments of Zhelin Bay, South China

2018 ◽  
Vol 129 (2) ◽  
pp. 905-912 ◽  
Author(s):  
Yang-Guang Gu
Keyword(s):  
Heavy Metal ◽  
Ecological Risk ◽  
South China ◽  
Surface Sediments ◽  
Metal Fractionation ◽  
Heavy Metal Fractionation ◽  
Intertidal Surface

scholarly journals Assessment of Heavy Metal Pollution Levels in Sediments and of Ecological Risk by Quality Indices, Applying a Case Study: The Lower Danube River, Romania

Water ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 1801
Author(s):  
Valentina Andreea Calmuc ◽  
Madalina Calmuc ◽  
Maxim Arseni ◽  
Catalina Maria Topa ◽  
Mihaela Timofti ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Ecological Risk ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Surface Sediments ◽  
Risk Index ◽  
Potential Ecological Risk ◽  
Danube River ◽  
Pollution Indices

It is a well–known fact that heavy metal pollution in sediments causes serious problems not only in the Danube basin, but also in the large and small adjacent river streams. A suitable method for assessing the level of heavy metals and their toxicity in sediments is the calculation of pollution indices. The present research aims to assess heavy metal pollution in the Lower Danube surface sediments collected along the Danube course (between 180 and 60 km) up to the point where the Danube River flows into the Danube Delta Biosphere Reserve (a United Nations Educational, Scientific and Cultural Organization – UNESCO, protected area). In addition, this monitored area is one of the largest European hydrographic basins. Five heavy metals (Cd, Ni, Zn, Pb, Cu) were analyzed in two different seasons, i.e., the autumn of 2018 and the spring of 2019, using the Inductively Coupled Plasma Mass Spectrometry (ICP– MS) technique. Our assessment of heavy metal pollution revealed two correlated aspects: 1. a determination of the potential risks of heavy metals in sediments by calculating the Potential Ecological Risk Index (RI), and 2. an evaluation of the influence of anthropogenic activities on the level of heavy metal contamination in the surface sediments, using three specific pollution indices, namely, the Geo–Accumulation Index (Igeo), the Contamination Factor (CF), and the Pollution Load Index (PLI). The results of this pioneering research activity in the region highlighted the presence of moderate metal (Ni and Cd) pollution and a low potential ecological risk for the aquatic environment.

Heavy metal fractionation and organic matter stabilization in sewage sludge treatment wetlands

2011 ◽  
Vol 37 (5) ◽  
pp. 771-778 ◽  
Author(s):  
Eleonora Peruzzi ◽  
Grazia Masciandaro ◽  
Cristina Macci ◽  
Serena Doni ◽  
Sandra G. Mora Ravelo ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Organic Matter ◽  
Sewage Sludge ◽  
Treatment Wetlands ◽  
Metal Fractionation ◽  
Sludge Treatment ◽  
Organic Matter Stabilization ◽  
Heavy Metal Fractionation ◽  
Sewage Sludge Treatment
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