Diversity and functions of microbes in surface sediments under heavy metal pollution of western Chaohu Lake

2021 ◽  
Author(s):  
Zijian Shen ◽  
Faxin Wang ◽  
Yanhong Liang ◽  
Yukui Li ◽  
Qingchuan Liu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Surface Sediments ◽  
Chaohu Lake

Heavy metal pollution in surface sediments of Ghareh-Aghaj River, one of the longest perennial rivers in Iran

2021 ◽  
Vol 80 (3) ◽  
Author(s):  
Hamidreza Shahradnia ◽  
Atefeh Chamani ◽  
Mehrdad Zamanpoore ◽  
Alireza Jalalizand
Keyword(s):  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Surface Sediments

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.

scholarly journals Impact of typhoon Matmo (2014) on the distribution of heavy metals in Quanzhou Bay

2019 ◽  
Vol 2 (1) ◽  
pp. 209-228 ◽  
Author(s):  
Yunpeng Lin ◽  
Yunhai Li ◽  
Binxin Zheng ◽  
Xijie Yin ◽  
Liang Wang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Surface Sediments ◽  
Scientific Management ◽  
Factors Influencing ◽  
Quanzhou Bay ◽  
Main Factors ◽  
Heavy Metal Assessment

The typhoon process has a significant influence on the distribution of heavy metals in sediments. Based on the heavy metal (V, Cr, Co, Ni, Cu, Zn, Pb, and Mn) contents in surface sediments collected under normal conditions and post-typhoon Matmo in Quanzhou Bay in 2014, the distributions, sources, and impacts of typhoon processes on heavy metals and pollution conditions were studied and discussed. The results showed that the heavy metals can be divided into two categories: Class I metals (Cu, Zn, Pb, and Mn) were mainly distributed in the estuary and significantly increased after the typhoon, and Class II metals (V, Cr, Co, and Ni) were distributed in the coastal intertidal zone and estuary and remained unchanged or decreased after the typhoon. The heavy metal assessment showed that heavy metal pollution in Quanzhou Bay was serious and tended to increase after the typhoon. The increased metal supply and enhanced riverine and tidal hydrodynamics after the typhoon may be the main factors influencing the variations in heavy metal content and distribution. This study provided a basis for the accurate evaluation and scientific management of heavy metal pollution caused by typhoon processes in Quanzhou Bay.

Assessment of Heavy Metal Pollution of Surface Sediments in Wadi Shu'ayb, Jordan

2015 ◽  
Vol 9 (3) ◽  
pp. 303-313 ◽  
Author(s):  
Ibrahim A. Bany Yaseen ◽  
◽  
Zayed Al-Hawari ◽  
Keyword(s):  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Surface Sediments

Nutrient and heavy metal pollution of surface sediments in small lakes in south-west Germany

1999 ◽  
Vol 214 (1-2) ◽  
pp. 301-318
Author(s):  
Ulrike Wolf-Brozio ◽  
Jürgen Schneider ◽  
Jörg Schwellenthin ◽  
Hans Ruppert
Keyword(s):  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Surface Sediments ◽  
West Germany ◽  
Small Lakes ◽  
South West
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