Huanjing kexue, 2013-05, Vol.34 (5), p.1871
2013
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- Autor(en) / Beteiligte
- Titel
- Health effect of volatile aldehyde compounds in photocatalytic oxidation of aromatics compounds
- Ist Teil von
- Huanjing kexue, 2013-05, Vol.34 (5), p.1871
- Ort / Verlag
- China
- Erscheinungsjahr
- 2013
- Quelle
- MEDLINE
- Beschreibungen/Notizen
- Photocatalytic oxidation (PCO) of toluene and benzaldehyde in indoor air by N doped TiO2 (N-TiO2) was conducted under UV irradiation of 254 nm. The intermediates were identified and monitored on real-time by proton transfer reaction-mass spectrometry. The health risks of PCO of toluene and benzaldehyde were assessed based on health risk influence index (eta). Results indicated that both the conversion rate and mineralization rate of toluene and benzaldehyde were relatively high, however, the volatile aldehyde compounds (VAs), including acetaldehyde and formaldehyde generated from ring-opening, significantly influenced the health risks of PCO of toluene and benzaldehyde. Acetaldehyde played a crucial role on health risks, which was inclined to desorb from the surface of catalysts, accumulate in gas-phase, and increase the health risks of PCO of the aromatic compounds. The concentration of formaldehyde kept stable at a relatively low level, however its impact cannot be neglected. In the PCO process of toluene a
- Sprache
- Chinesisch
- Identifikatoren
- ISSN: 0250-3301Titel-ID: cdi_pubmed_primary_23914541
- Format
- –
- Schlagworte
- Acetaldehyde - adverse effects, Acetaldehyde - analysis, Air Pollution, Indoor - prevention & control, Benzaldehydes - chemistry, Catalysis, Formaldehyde - adverse effects, Formaldehyde - analysis, Health Impact Assessment, Hydrocarbons, Aromatic - chemistry, Oxidation-Reduction, Photolysis, Titanium - chemistry, Toluene - chemistry, Ultraviolet Rays, Volatile Organic Compounds - chemistry