TY - JOUR
T1 - Source identification of Zn in Erren River, Taiwan
T2 - An application of Zn isotopes
AU - Tu, Yao Jen
AU - You, Chen Feng
AU - Kuo, Tian Yue
N1 - Funding Information:
The work is sponsored by MOE and NCKU to CFY. The authors appreciate their funding support in this research.
Funding Information:
The work is sponsored by MOE and NCKU to CFY. The authors appreciate their funding support in this research.
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/6
Y1 - 2020/6
N2 - Source identification of environmental pollutants is critical for pollution prevention and controlling. In this work, Zn isotopic compositions and Zn spatial distribution from headwater to estuary of Erren River (ER) catchments (southern Taiwan) were systematically investigated as a potential source tracer for distinguishing natural weathering and anthropogenic activities. Industrial wastewaters/effluents including leather, printed circuit board (PCB), metal surface treatment (MST), semiconductor wafer (SCW), and electroplating (EP) industries were collected and analyzed as the potential sources of Zn isotopic database. Results implied that MST wastewaters/effluents had the lowest δ66Zn values (Zn isotopic composition) in the range of −0.40 to +0.04. Oppositely, high Zn isotopic composition was observed in leather (δ66Zn = +0.41 to +0.71) and EP wastewaters/effluents (δ66Zn = +0.54 to +1.84). Significantly, the plot of δ66Zn versus 1/Zn clearly indicates that riverine Zn isotope in the ER waters (−0.73 to 1.77‰) can be simply explained by at least three end-member mixing which contains EP, MST wastewaters, and natural component. Our data importantly proved that Zn isotopic composition is a powerful tracer for distinguishing different Zn sources of anthropogenic pollution in rivers.
AB - Source identification of environmental pollutants is critical for pollution prevention and controlling. In this work, Zn isotopic compositions and Zn spatial distribution from headwater to estuary of Erren River (ER) catchments (southern Taiwan) were systematically investigated as a potential source tracer for distinguishing natural weathering and anthropogenic activities. Industrial wastewaters/effluents including leather, printed circuit board (PCB), metal surface treatment (MST), semiconductor wafer (SCW), and electroplating (EP) industries were collected and analyzed as the potential sources of Zn isotopic database. Results implied that MST wastewaters/effluents had the lowest δ66Zn values (Zn isotopic composition) in the range of −0.40 to +0.04. Oppositely, high Zn isotopic composition was observed in leather (δ66Zn = +0.41 to +0.71) and EP wastewaters/effluents (δ66Zn = +0.54 to +1.84). Significantly, the plot of δ66Zn versus 1/Zn clearly indicates that riverine Zn isotope in the ER waters (−0.73 to 1.77‰) can be simply explained by at least three end-member mixing which contains EP, MST wastewaters, and natural component. Our data importantly proved that Zn isotopic composition is a powerful tracer for distinguishing different Zn sources of anthropogenic pollution in rivers.
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U2 - 10.1016/j.chemosphere.2020.126044
DO - 10.1016/j.chemosphere.2020.126044
M3 - Article
C2 - 32045973
AN - SCOPUS:85079034878
SN - 0045-6535
VL - 248
JO - Chemosphere
JF - Chemosphere
M1 - 126044
ER -