Document Detail


Arsenic contamination in the food chain and its risk assessment of populations residing in the Mekong River basin of Cambodia.
MedLine Citation:
PMID:  22818591     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In the present study, we investigated the potential arsenic exposure of Cambodian residents from their daily food consumption. Environmental and ecological samples such as paddy soils, paddy rice (unhusked), staple rice (uncooked and cooked), fish and vegetables were collected from Kandal, Kratie and Kampong Cham provinces in the Mekong River basin of Cambodia. After acid-digestion, digestates were chemically analyzed by inductively coupled plasma mass spectrometry. Results revealed that the means of total arsenic concentration ([As](tot)) in paddy soils and paddy rice from Kandal were significantly higher than those from Kampong Cham province (t-test, p<0.05). Moreover, a significant positive correlation between the [As](tot) in paddy soils and paddy rice was found (r(14)=0.826, p<0.01). Calculations of arsenic intake from food consumption indicated that the upper end of the range of the daily dose of inorganic arsenic for Kandal residents (0.089-8.386μgd(-1)kg(-1)(body wt.)) was greater than the lower limits on the benchmark dose for a 0.5% increased incidence of lung cancer (BMDL(0.5) is equal to 3.0μgd(-1)kg(-1)(body wt.)). The present study suggests that the residents in Kandal are at risk of arsenic intake from their daily food consumption. However, the residents in Kratie and Kampong Cham provinces are less likely to be exposed to arsenic through their daily dietary intake. To the best of our knowledge, this is the first report estimating the daily intake and daily dose of inorganic arsenic from food consumption in the Mekong River basin of Cambodia.
Authors:
Kongkea Phan; Suthipong Sthiannopkao; Savoeun Heng; Samrach Phan; Laingshun Huoy; Ming Hung Wong; Kyoung-Woong Kim
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-7
Journal Detail:
Title:  Journal of hazardous materials     Volume:  -     ISSN:  1873-3336     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9422688     Medline TA:  J Hazard Mater     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier B.V. All rights reserved.
Affiliation:
School of Environmental Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea; Resource Development International-Cambodia, Kean Svay, Kandal, P.O. Box 494 Phnom Penh, Cambodia.
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