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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.3
- 수록면
- 29 - 35 (7page)
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This study noted that the actual mechanism of N-nitrosodimethylamine (NDMA) photodecomposition in the presence of H₂O₂ is missing from the previous works. This study investigated a key unknown reactive species (URS) enhanced by the addition of H₂O₂ during the photolysis of NDMA with H₂O₂, not hydroxyl radicals. In order to provide experimental evidences in support of URS formation, we have mainly used p-nitrosodimethylaniline, methanol, and benzoic acid as well-known probes of .OH in this study. Both loss of PNDA and formation of hydroxybenzoic acids were dependent on NDMA concentrations during the photolysis in a constant concentration of H₂O₂. In particular, competition kinetics showed that the relative reactivity of an URS was at least identical with .OH-like reactivity. In addition, the decay of NDMA was estimated to be about 65% by the direct UV light and about 35% by the reactive species or URS generated through the photolysis of NDMA and H₂O₂. Therefore, our data suggest that a highly oxidizing URS is formed in the photolysis of NDMA with H₂O₂, which could be peroxynitrite (ONOO-) as a potent oxidant by itself as well as a source of .OH.
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참고문헌 (39)
참고문헌 신청
1. [단행본] - Liteplo RG / 2002 / International Programme on Chemical Safety. N-Nitrosodimethylamine / World Health Organization
2. [학술지(정기간행물)] - Charrois JW / 2004 / Detecting Nnitrosamines in drinking water at nanogram per liter levels using ammonia positive chemical ionization / Environ. Sci. Technol 38 : 4835 ~ 4841
3. [학술지(정기간행물)] - Plumlee MH / 2007 / Photochemical attenuation of Nnitrosodimethylamine (NDMA) and other nitrosamines in surface water / Environ. Sci. Technol 41 : 6170 ~ 6176
4. [학술지(정기간행물)] - Plumlee MH / 2008 / N-nitrosodimethylamine(NDMA)removal by reverse osmosis and UV treatment and analysis via LC-MS/ MS / Water Res 42 : 347 ~ 355
5. [보고서] - U.S. Environmental Protection Agency / 2012 / Technical fact sheet N-nitroso-dimethylamine (NDMA)
2. [학술지(정기간행물)] - Charrois JW / 2004 / Detecting Nnitrosamines in drinking water at nanogram per liter levels using ammonia positive chemical ionization / Environ. Sci. Technol 38 : 4835 ~ 4841
3. [학술지(정기간행물)] - Plumlee MH / 2007 / Photochemical attenuation of Nnitrosodimethylamine (NDMA) and other nitrosamines in surface water / Environ. Sci. Technol 41 : 6170 ~ 6176
4. [학술지(정기간행물)] - Plumlee MH / 2008 / N-nitrosodimethylamine(NDMA)removal by reverse osmosis and UV treatment and analysis via LC-MS/ MS / Water Res 42 : 347 ~ 355
5. [보고서] - U.S. Environmental Protection Agency / 2012 / Technical fact sheet N-nitroso-dimethylamine (NDMA)
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UCI(KEPA) : I410-ECN-0101-2017-539-001538506