Fractionation of Heavy Metals in Sediments from Dianchi Lake, China1
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Mercapto-palygorskite efficiently immobilizes cadmium in alkaline soil and reduces its accumulation in wheat plants: A field study
2023, Ecotoxicology and Environmental SafetyGeochemical fractionation, bioavailability, and potential risk of heavy metals in sediments of the largest influent river into Chaohu Lake, China
2021, Environmental PollutionCitation Excerpt :It is well known that the total amount of HMs in river sediments is not directly related to the toxicity of benthic organisms, but depends on their bioavailable fractions (Howard and Evans, 2010). Recent studies have shown that the mobility and bioavailability of HMs in soils and sediments are inextricably linked to their geochemical fractionation (Li et al., 2007; Baig et al., 2009; Rinklebe & Shaheen, 2014; Shaheen and Rinklebe, 2014; Wojtkowska et al., 2016). Therefore, investigating the geochemical fractionations of HMs in sediments is essential for understanding their migration, bioavailability, and potential threats to the aquatic environment quality (Rinklebe & Shaheen, 2014; Shaheen and Rinklebe, 2014).
Assessment of metal mobility in sediment, commercial fish accumulation and impact on human health risk in a large shallow plateau lake in southwest of China
2020, Ecotoxicology and Environmental SafetyCitation Excerpt :Humic acid-bound fraction took noticeable fraction of Pb and Cr at Site 1 sediments, possibly because high organic matter constitute of the site provided bounding sites for the two elements (Guan et al., 2019; Lin and Chen, 1998). The phase distribution pattern in this study was similar to the previous study in Dianchi Lake sediment metal chemical speciation, which identified residual fraction as major chemical form of Pb and Cr in sediment (Li et al., 2007). Both porewater and surface water concentration of the two elements neither showed spatial variation, nor significant difference between porewater and surface water from each site, showing low mobility of the two elements in sediment and indicated relatively low ecological risk.
Concentrations, speciation, and ecological risk of heavy metals in the sediment of the Songhua River in an urban area with petrochemical industries
2019, ChemosphereCitation Excerpt :However, the GI and PERI neglect the bioavailability and mobility of heavy metals in the sediment (Singh et al., 2005). In fact, bioavailability and mobility vary with the chemical speciation of heavy metals in sediments, resulting in varying ecological risks (Li et al., 2007). Therefore, a four-stage sequential extraction method was established by the European Community Bureau of References (BCR), and the method has been widely applied to determine the chemical speciation of heavy metals (Quevauviller et al., 1993; Cui et al., 2014; Arain et al., 2008).
Identification of anthropogenic inputs of trace metals in lake sediments using geochemical baseline and Pb isotopic composition
2018, Ecotoxicology and Environmental SafetyVariation of heavy metal speciation during the pyrolysis of sediment collected from the Dianchi Lake, China
2017, Arabian Journal of Chemistry
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Project supported by the Science and Technology Program for Social Development of Jiangsu Province, China (No.BS2006060), the Startup Fund of Nanjing University of Information Science & Technology, the State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University (No. 2005406711) and the Jiangsu Key Laboratory of Environmental Change and Ecological Construction, Nanjing Normal University.