Assessment of natural radionuclides and heavy metals contamination to the environment: Case study of Malaysian unregulated tin-tailing processing industry

Muhammad Abdullah Rahmat; Aznan Fazli Ismail; Nursyamimi Diyana Rodzi; Eli Syafiqah Aziman; Wan Mohd Razi Idris; Tukimat Lihan

doi:https://doi.org/10.1016/j.net.2021.12.013

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자료유형: 학술저널

저자정보: Muhammad Abdullah Rahmat (Universiti Kebangsaan Malaysia) Aznan Fazli Ismail (Universiti Kebangsaan Malaysia) Nursyamimi Diyana Rodzi (Universiti Kebangsaan Malaysia) Eli Syafiqah Aziman (Universiti Kebangsaan Malaysia) Wan Mohd Razi Idris (Water Analysis, Faculty of Science and Technology, Universiti Kebangsaan Malaysia) Tukimat Lihan (Universiti Kebangsaan Malaysia)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제54권 제6호

발행연도: 2022.6

수록면: 2,230 - 2,243 (14page)

DOI: https://doi.org/10.1016/j.net.2021.12.013

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The tin tailing processing industry in Malaysia has operated with minimal regard and awareness formaterial management and working environment safety, impacting the environment and workers inaspects of radiation and heavy metal exposure. RIA was conducted where environmental samples wereanalyzed, revealing concentrations of 226Ra, 232Th and 40K between the range of 0.1e10.0, 0.0e25.7, and0.1e5.8 Bq/g respectively, resulting in the AED exceeding UNCEAR recommended value and regulationlimit enforced by AELB (1 mSv/y). Raeq calculated indicates that samples collected pose a significantthreat to human health from gamma-ray exposure. Assessment of heavy metal content via pollutionindices of soil and sediment showed significant contamination and enrichment from processing activitiesconducted. As and Fe were two of the highest metals exposed both via soil ingestion with an average of4.6 103 mg/kg-day and 1.4 104 mg/kg-day, and dermal contact with an average of 5.6 104 mg/kg-day and 6.0 104. mg/kg-day respectively. Exposure via accidental ingestion of soil and sedimentcould potentially cause adverse non-carcinogenic and carcinogenic health effect towards workers in theindustry. Correlation analysis indicates the presence of a relationship between the concentration ofNORM and trace elements

#Tin tailing #NORM #Heavy metals #Radiolo

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