Distribution and speciation of heavy metals in sediments from the mainstream, tributaries, and lakes of the Yangtze River catchment of Wuhan, China

Occurrence of pharmaceuticals and personal care products and associated environmental risks in the central and lower Yangtze river, China

“…In past few decades, pollutions from the discharge of municipal sewage, industrial wastewater, and agricultural runoff have caused environmental degradation of the river. Contaminations by heavy metals Yang et al, 2009), nutrients (Chen et al, 2000), pesticides , persistent organic pollutants Wang et al, 2009) and perfluorinated compounds (So et al, 2007) have been previously reported. However occurrence data for PPCPs in the Yangtze River basin has been limited to the Yangtze Estuary (Yan et al, 2013) and the Chongqing region of the Three Gorges Reservoir (Chang et al, 2010).…”

Effect of overlying water pH, dissolved oxygen and temperature on heavy metal release from river sediments under laboratory conditions

“…Under the infl uence of human activities, large amounts of uncontrolled heavy metal inputs from urban and industrial sources entered the mainstream and tributaries of rivers and accumulated in the sediments (Yang et al 2009). As environmental conditions alter, heavy metals in the sediments can be released into the water source.…”

Geochemistry of terrigenous sediments in surface water from ore and okitipupa southwest, Nigeria

“…Sediments have been described by many authors as the reservoir of numerous chemicals andalso a pivotal influence in water contamination (Mil-Homens, et al, 2013;Yu et al, 2001;Sakan et al, 2009;Wepener, and Vermeulen, 2005;Mil-Homens et al, 2007;Shakeri and Moore, 2010;Yang et al, 2009). The upsurge of industrialization and population have engendered harmful chemicals and elemental pollutants that are always injected into the soils and sediments through numerous anthropogenic activities which preclude: atmospheric deposition, industrialization, agricultural activities and riparian anthropogenic activities, where chemicals and metals are produced.…”

“…The upsurge of industrialization and population have engendered harmful chemicals and elemental pollutants that are always injected into the soils and sediments through numerous anthropogenic activities which preclude: atmospheric deposition, industrialization, agricultural activities and riparian anthropogenic activities, where chemicals and metals are produced. Trace metals are often housed by soil which are repeatedly leached into the environment (Peizhong et al, 2015;Uwumarongie et al, 2008;Banat et al, 2005;Rafael et al, 2016), materials beneath surface water serve as barometer to survey the pollutant level in aquatic ecosystem (Yang et al, 2009;Safaa, 2015;Pekey et al, 2004). The chemistry of aquatic ecosystem towards the level of pollutants varies, where the amount and nature of pollutant in the seabed will quantify the degree of pollution (Edward et al, 2013;Abida et al, 2009;Verep et al, 2012;Marchand et al, 2016).…”