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Science and technology for sustainability 2008 project report : Part 1-environmental monitoring of hazardous chemicals

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  • Science and technology for sustainability 2008 project report
  • Sthiannopkao, Suthipong; Kim, Kyoung woong
  • United Nations University


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Title Science and technology for sustainability 2008 project report
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Sub Title

Part 1-environmental monitoring of hazardous chemicals

Material Type Reports
Author(English)

Sthiannopkao, Suthipong; Kim, Kyoung woong

Publisher

United Nations University

Date 2008
Series Title; No 2008 Project Report
Pages 210
Subject Country South Korea(Asia and Pacific)
Language English
File Type Link
Original Format pdf
Subject Industry and Technology < Science/Technology
Holding United Nations University

Abstract

Concentrations of arsenic and other trace elements in groundwater were examined at three villages (PT, POT and CHL) in the Kandal Province of Cambodia. Concentrations of arsenic in the groundwater ranged from 6.64 (in POT village) to 1,543μgL-1 (in PT village), with average and median concentrations of 552μgL-1 and 353 μgL-1, respectively. About 86% out of fifteen samples contained arsenic concentrations exceeding the WHO drinking water guidelines of 10μgL-1. Concentrations of arsenic (III) varied from 4μgL-1 (in POT village) to 1,334 μgL-1 (in PT village), with an average concentration of 470μgL-1. In addition, about 67%, 80%, 86% and 100% of the groundwater samples had higher concentrations for, respectively, barium, manganese, lead and selenium than the WHO drinking water guidelines. These results reveal that groundwater in Kandal Province is not only considerably contaminated with arsenic but also with barium, manganese, lead and selenium. A risk assessment study found that one sample (PT25) had a cumulative arsenic concentration (6,758 mg) slightly higher than the threshold level (6,750 mg) that could cause internal cancer in smelter workers with chronic exposure to arsenic from groundwater. High cumulative arsenic ingestion poses a health threat to the residents of Kandal Province.

User Note

UNU & GIST Joint Programme on Science & Technology for Sustainability