Consumption of water from ex-mining ponds in Klang Valley and Melaka, Malaysia: A health risk study

Koki, Isa Baba and Low, Kah Hin and Juahir, Hafizan and Abdul Zali, Munirah and Azid, Azman and Zain, Sharifuddin Md (2018) Consumption of water from ex-mining ponds in Klang Valley and Melaka, Malaysia: A health risk study. Chemosphere, 195. pp. 641-652. ISSN 0045-6535

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Official URL: https://doi.org/10.1016/j.chemosphere.2017.12.112

Abstract

Evaluation of health risks due to heavy metals exposure via drinking water from ex-mining ponds in Klang Valley and Melaka has been conducted. Measurements of As, Cd, Pb, Mn, Fe, Na, Mg, Ca, and dissolved oxygen, pH, electrical conductivity, total dissolved solid, ammoniacal nitrogen, total suspended solid, biological oxygen demand were collected from 12 ex-mining ponds and 9 non-ex-mining lakes. Exploratory analysis identified As, Cd, and Pb as the most representative water quality parameters in the studied areas. The metal exposures were simulated using Monte Carlo methods and the associated health risks were estimated at 95th and 99th percentile. The results revealed that As was the major risk factor which might have originated from the previous mining activity. For Klang Valley, adults that ingested water from those ponds are at both non-carcinogenic and carcinogenic risks, while children are vulnerable to non-carcinogenic risk; for Melaka, only children are vulnerable to As complications. However, dermal exposure showed no potential health consequences on both adult and children groups.

Item Type: Article
Uncontrolled Keywords: Arsenic; Chemometrics; Metals; Monte Carlo; Pollution; Water quality
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Faculty of Science > Dept of Chemistry
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 09 Jul 2019 07:54
Last Modified: 09 Jul 2019 07:54
URI: http://eprints.um.edu.my/id/eprint/21592

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