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Title		Authors	PubMed ID
1	Comprehensive evaluation of adsorption performances of carbonaceous materials for sulfonamide antibiotics removal.	Luo B, Huang G, Yao Y, An C, Li W, Zheng R, Zhao K	32886308 CONCORDIA
2	Quantifying construction waste reduction through the application of prefabrication: a case study in Anhui, China.	Hao J, Chen Z, Zhang Z, Loehlein G	32358748 ENCS
3	Performance analysis and life cycle greenhouse gas emission assessment of an integrated gravitational-flow wastewater treatment system for rural areas.	Song P, Huang G, An C, Zhang P, Chen X, Ren S	31273662 ENCS
4	Pilot-scale application of a single-stage hybrid airlift BioCAST bioreactor for treatment of ammonium from nitrite-limited wastewater by a partial nitrification/anammox process.	Saborimanesh N, Walsh D, Yerushalmi L, Arriagada EC, Mulligan CN	31267396 BIOLOGY
5	An eco-friendly method for heavy metal removal from mine tailings.	Arab F, Mulligan CN	29594884 ENCS
6	Evaluating a 5-year metal contamination remediation and the biomonitoring potential of a freshwater gastropod along the Xiangjiang River, China.	Li D, Pi J, Zhang T, Tan X, Fraser DJ	29770938 BIOLOGY

Title:	Evaluating a 5-year metal contamination remediation and the biomonitoring potential of a freshwater gastropod along the Xiangjiang River, China.
Authors:	Li D, Pi J, Zhang T, Tan X, Fraser DJ
Link:	https://www.ncbi.nlm.nih.gov/pubmed/29770938?dopt=Abstract
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PMID:	29770938	Category:	Environ Sci Pollut Res Int	Date Added:	2019-06-04
Dept Affiliation:	BIOLOGY 1 Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province, Hunan Engineering Technology Research Center of Featured Aquatic Resources Utilization, College of Animal Science and Technology, Hunan Agricultural University, Changsha, 410128, People's Republic of China. 2 College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, People's Republic of China. zhangting@csu.edu.cn. 3 Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden the Chinese Academy of Sciences, Wuhan, 430074, People's Republic of China. 4 Department of Biology, Concordia University, Montréal, Québec, Canada.

Description:

Evaluating a 5-year metal contamination remediation and the biomonitoring potential of a freshwater gastropod along the Xiangjiang River, China.

Environ Sci Pollut Res Int. 2018 Jul;25(21):21127-21137

Authors: Li D, Pi J, Zhang T, Tan X, Fraser DJ

Abstract

Effective remediation of heavy metal pollution in aquatic systems is desired in many regions, but it requires integrative assessments of sediments, water, and biota that can serve as robust biomonitors. We assessed the effects of a 5-year metal contamination remediation along the Xiangjiang River, China, by comparing concentrations of trace metals in water and surface sediments between 2010-2011 and 2016. We also explored the trace metal biomonitoring potential of a freshwater gastropod (Bellamya aeruginosa). Metal concentrations in water (means and ranges) dropped over time to within permissible limits of drinking water guidelines set by China, USEPA, and WHO in 2016. Although sediment means and ranges of Cd, Pb, Zn, and Mn also diminished with remediation, those for Cr and Cu slightly increased, and all six metals retained concentrations higher than standards set by China. All metals in sediments could also be associated with anthropogenic inputs using a hierarchical clustering analysis, and they generate high potential ecological risks based on several indices, especially for Cd and As. The bio-sediment accumulation factors of all measured trace metals in gastropod soft tissues and shells were lower than 1.0, except for Ca. Trace metal contents in gastropods were positively correlated with those in water and surface sediments for As (soft tissues) and Cr (shells). Collectively, our results do not yet highlight strong beneficial effects of 5-year remediation and clearly illustrate the heavy metal pollution remaining in Xiangjiang River sediment. Additional physical, chemical, and biological measurements should be implemented to improve sediment quality. We further conclude that gastropod soft tissues and shells can be suitable biomonitors of spatial differences in some heavy metals found within river sediments (e.g., As, Cr).

PMID: 29770938 [PubMed - indexed for MEDLINE]

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