Accumulation of heavy metals and trace elements in fluvial sediments received effluents from traditional and semiconductor industries

Liang Ching Hsu, Ching Yi Huang, Yen Hsun Chuang, Ho Wen Chen, Ya Ting Chan, Heng Yi Teah, Tsan Yao Chen, Chiung Fen Chang, Yu Ting Liu, Yu Min Tzou

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Metal accumulation in sediments threatens adjacent ecosystems due to the potential of metal mobilization and the subsequent uptake into food webs. Here, contents of heavy metals (Cd, Cr, Cu, Ni, Pb, and Zn) and trace elements (Ga, In, Mo, and Se) were determined for river waters and bed sediments that received sewage discharged from traditional and semiconductor industries. We used principal component analysis (PCA) to determine the metal distribution in relation to environmental factors such as pH, EC, and organic matter (OM) contents in the river basin. While water PCA categorized discharged metals into three groups that implied potential origins of contamination, sediment PCA only indicated a correlation between metal accumulation and OM contents. Such discrepancy in metal distribution between river water and bed sediment highlighted the significance of physical-chemical properties of sediment, especially OM, in metal retention. Moreover, we used Se XANES as an example to test the species transformation during metal transportation from effluent outlets to bed sediments and found a portion of Se inventory shifted from less soluble elemental Se to the high soluble and toxic selenite and selenate. The consideration of environmental factors is required to develop pollution managements and assess environmental risks for bed sediments.

Original languageEnglish
Article number34250
JournalScientific Reports
Volume6
DOIs
Publication statusPublished - 2016 Sep 29
Externally publishedYes

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semiconductor industry
alluvial deposit
trace element
heavy metal
effluent
metal
sediment
principal component analysis
river bed
organic matter
river water
environmental factor
selenate
selenite
environmental risk
mobilization
food web
chemical property
sewage
river basin

ASJC Scopus subject areas

  • General

Cite this

Accumulation of heavy metals and trace elements in fluvial sediments received effluents from traditional and semiconductor industries. / Hsu, Liang Ching; Huang, Ching Yi; Chuang, Yen Hsun; Chen, Ho Wen; Chan, Ya Ting; Teah, Heng Yi; Chen, Tsan Yao; Chang, Chiung Fen; Liu, Yu Ting; Tzou, Yu Min.

In: Scientific Reports, Vol. 6, 34250, 29.09.2016.

Research output: Contribution to journalArticle

Hsu, Liang Ching ; Huang, Ching Yi ; Chuang, Yen Hsun ; Chen, Ho Wen ; Chan, Ya Ting ; Teah, Heng Yi ; Chen, Tsan Yao ; Chang, Chiung Fen ; Liu, Yu Ting ; Tzou, Yu Min. / Accumulation of heavy metals and trace elements in fluvial sediments received effluents from traditional and semiconductor industries. In: Scientific Reports. 2016 ; Vol. 6.
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