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Health risk assessment of exposure to chlorpyrifos and dichlorvos in children at childcare facilities

Authors
 Ho-Hyun Kim ; Young-Wook Lim ; Jae-Young Lee ; Byung-Soon Choi ; Hyun-Sook Ham ; Dong-Chun Shin ; Ji-Yeon Yang 
Citation
 Science of the Total Environment, Vol.444 : 441~450, 2013 
Journal Title
 Science of the Total Environment 
ISSN
 0048-9697 
Issue Date
2013
Abstract
The present study evaluated 168 childcare facilities from 6 cities in South Korea to assess exposure to organophosphorus pesticides (OPs) in children through 4 major pathways (indoor air, indoor dust, surface wipe of indoor objects, and hand wash water of children). The Excess Cancer Risk (ECR) was calculated based on the Cancer Potency Factor (CPF) and Age Dependent Adjustment Factor (ADAF) in adults. Dichlorvos residues were detected in the indoor air, indoor dust, surface wipes of indoor objects, and the hand wash water of children at frequencies of 47.4, 90, 100, and 100%, respectively. After revision based on the ADAF, total cancer risk in the 50th percentile was 3.99 × 10− 3 for inhalation, oral intake, and dermal contact in children ages 3 to 4 and 4.63 × 10− 4 in kindergarteners ages 5 to 6. Inhalation was the primary pathway of pesticide exposure in children in childcare facilities. Children ages 3 to 4 in daycare centers had a Hazard Quotient (HQ) of 0.5 for dichlorvos, which was 50% lower than the risk criterion level of 1 but was higher than the 95% percentile with a HQ of 1.9. This study postulates that children in childcare facilities may be exposed to specific OPs.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/86843
DOI
10.1016/j.scitotenv.2012.11.102
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Preventive Medicine
1. 연구논문 > 4. Graduate School of Public Health > Graduate School of Public Health
1. 연구논문 > 5. Research Institutes > Institute for Environmental Research
Yonsei Authors
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Link
 http://www.sciencedirect.com/science/article/pii/S0048969712015355
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