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  3. Agricultural Chemistry / 農業化學系
  4. Evaluation of Land Use Adaptation by Sequential Extraction of Soil Trace Elements at an Abandoned Gold and Copper Refinery Site in Northern Taiwan
 
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Evaluation of Land Use Adaptation by Sequential Extraction of Soil Trace Elements at an Abandoned Gold and Copper Refinery Site in Northern Taiwan

Journal
SUSTAINABILITY
Journal Volume
14
Journal Issue
11
Date Issued
2022
Author(s)
Wu, SF
Lai, YJ
ZENG-YEI HSEU  
Chern, YT
DOI
10.3390/su14116423
URI
https://scholars.lib.ntu.edu.tw/handle/123456789/629584
URL
https://api.elsevier.com/content/abstract/scopus_id/85131664551
Abstract
This study site is located at an abandoned factory of mining, smelting, and refining of gold and copper in north Taiwan for more than one hundred years. The present study used soil background investigation out of the site and the sequential extraction procedures for arsenic and copper to assess the reutilization potential of brownfields at the site. The upper limit of background concentration out of the site was 300 mg/kg for arsenic and 700 mg/kg for copper. The soil arsenic within the site was mainly in the immobile fraction, such as forms fixed by layer silicates, that were very low risk for environmental releases. The soil copper in the abandoned sedimentation basin, gold refinery, and copper refinery was in the mobile fractions such as acid extractable, reducible, and oxidizable forms with higher release risk; therefore, except merely those three zones in the entire site with higher risk for environmental releases of copper, the release risks of trace elements are quite low in the rest of the areas, and land reuse without contact with soil or plant non-edible plants is possible. Therefore, in response to public demand for opening part of the site to promote local tourism development, appropriate control and isolation measures can be implemented to prevent the toxic elements from affecting human health through soil ingestion, skin contact, and other exposure pathways. In terms of pollution control, reducing dust inhalation is also an option to efficiently reduce health risks to an acceptable level and achieve the goal of sustainable land use at the contaminated site.
Subjects
soil; heavy metal contamination; chemical form; mobility; sequential extraction; HEAVY-METALS; SPECIATION
Publisher
MDPI
Type
journal article

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