Endocrine-disrupting compounds in the Xiangjiang River of China: Spatio-temporal distribution, source apportionment, and risk assessment

2019 ◽  
Vol 167 ◽  
pp. 476-484 ◽  
Author(s):  
Zhoufei Luo ◽  
Yi Tu ◽  
Haipu Li ◽  
Bo Qiu ◽  
Yang Liu ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Source Apportionment ◽  
Temporal Distribution ◽  
Endocrine Disrupting Compounds ◽  
Xiangjiang River ◽  
Endocrine Disrupting ◽  
Spatio Temporal

In vitro-to-in vivo extrapolation (IVIVE) by PBTK modeling for animal-free risk assessment approaches of potential endocrine-disrupting compounds

2018 ◽  
Vol 93 (2) ◽  
pp. 401-416 ◽  
Author(s):  
Eric Fabian ◽  
Caroline Gomes ◽  
Barbara Birk ◽  
Tabitha Williford ◽  
Tzutzuy Ramirez Hernandez ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Endocrine Disrupting Compounds ◽  
Endocrine Disrupting ◽  
In Vivo Extrapolation

scholarly journals Trace Element Contamination in One of the Yangtze Tributaries (Hunan, China)—Source Review and Potential Release from Sediments

Water ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 271
Author(s):  
Cécile Grosbois ◽  
Marc Desmet ◽  
Mengxue Zhang ◽  
Nathalie Gassama ◽  
Qinghui Peng ◽  
...  
Keyword(s):  
Temporal Distribution ◽  
Pollution Level ◽  
Contamination Level ◽  
Experimental Protocol ◽  
Xiangjiang River ◽  
Aquatic Life ◽  
Spatio Temporal ◽  
Trace Element Contamination ◽  
The Stability ◽  
Aerobic And Anaerobic

Spatio-temporal distribution and leachability of some trace elements (TE) were investigated in sediments of the Xiangjiang River, tributary of the Yangtze River. Based on data collected during 2015–2017, a literature review and geoaccumulation indexes, the pollution level was the highest for Cd, Sb and Hg (Igeo > 3). Over the period reviewed, the TE contamination level displayed almost no temporal variation but an obvious spatial distribution. The most upstream contamination hotspot (Cd > Cr > As, Cu, Pb, Zn > Hg, Sb) was the Songbai section. This hotspot did not spread further downstream. The second hotspot identified was the Zhuzhou–Xiangtan section, impacted by Cd > Hg, Pb, Zn > Cu, with the Zhuzhou area being particularly highly impacted by Pb and Zn. A 30-day leaching experimental protocol under aerobic and anaerobic conditions was carried out to access TE mobility. Low percentages of TE released were calculated, showing that the TE fate mostly depends on the stability of bearing phases under specific physicochemical and microbial conditions. In this case, the studied sediments can be an important sink for these TE. However, some environmental issues have to be considered as some leachate concentrations of contaminants (As, Cr, Cu and U) released into water exceed freshwater aquatic life criteria.

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