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- E-ISSN 2288-8985
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Analysis and risk assessment of formaldehyde in water from water purification plant in korea
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2009, v.22 no.5, pp.386-394
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(2009). Analysis and risk assessment of formaldehyde in water from water purification plant in korea. Analytical Science and Technology, 22(5), 386-394.
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Abstract
Formaldehyde is used in lether manufacture, a dry plate and an explosive. It is by-product of ozonizing process in filtration plant. The effects of exposure are eye pruritus, tickle, runing nose, blocking nasal passages and headache. It also makes a dried throat and causes inflammation. It is classified as B1 group for inhalation by US. EPA, which can cause cancer in human. For analysis of formaldehyde, formaldehydes-DNPH derivative was extracted with solid cartridge and was analyzed by High Performance Liquid Chromatography/Diode Array Detector (HPLC/DAD). The detection limit was 3 μg/L and the recoveries were 72.3~109.1% (RSD 2.9~11.5%). Water samples were collected in four Korean rivers, four times per year seasonally for 10 years from 1998 to 2007. The monitoring results were 48.8% (630/1291), 5.15~101.9 μg/L in purified water. Because of noncarcinogen in drinking water, hazard index is calculated with RfD. Results of excess cnacer risk was below 1 and was considered as safe value.
- keywords
- formaldehyde, 2, 4-DNPH, HPLC/DAD, risk assessment, monitoring
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