DOI: 10.1016/j.atmosenv.2018.01.052
Scopus记录号: 2-s2.0-85041456828
论文题名: Mutagenic atmospheres resulting from the photooxidation of aromatic hydrocarbon and NOx mixtures
作者: Riedel T ; P ; , DeMarini D ; M ; , Zavala J ; , Warren S ; H ; , Corse E ; W ; , Offenberg J ; H ; , Kleindienst T ; E ; , Lewandowski M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 178 起始页码: 164
结束页码: 172
语种: 英语
英文关键词: Air quality
; Aromatic hydrocarbons
; Mutagenicity
; Photooxidation products
; Salmonella TA100
Scopus关键词: Air quality
; Aromatic compounds
; Aromatic hydrocarbons
; Aromatization
; Chemical analysis
; Ethylbenzene
; Gases
; Hydrocarbons
; Mixtures
; Naphthalene
; Nitrogen compounds
; Nitrogen oxides
; Organic chemicals
; Photooxidation
; Salmonella
; Sulfur compounds
; Volatile organic compounds
; Xylene
; 1 ,3 ,5-Trimethylbenzene
; Ammonium Sulfate
; Aromatic VOCs
; Atmospheric simulations
; Health effects
; Molecular formula
; Mutagenic potencies
; Mutagenicity
; Phase interfaces
; 1,2,4 trimethylbenzene
; 1,3,5 trimethylbenzene
; ammonium sulfate
; aromatic hydrocarbon
; benzene
; ethylbenzene
; meta cresol
; meta xylene
; naphthalene
; nitric oxide
; ortho xylene
; para xylene
; toluene
; air pollution
; Article
; atmosphere
; bacterial cell
; chemical analysis
; chemical composition
; controlled study
; gas
; light intensity
; mutagenicity
; nonhuman
; photooxidation
; priority journal
; Salmonella
; secondary organic aerosol
; solar radiation
; steady state
; Salmonella
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Although many volatile organic compounds (VOCs) are regulated to limit air pollution and the consequent health effects, the photooxidation products generally are not. Thus, we examined the mutagenicity in Salmonella TA100 of photochemical atmospheres generated in a steady-state atmospheric simulation chamber by irradiating mixtures of single aromatic VOCs, NOx, and ammonium sulfate seed aerosol in air. The 10 VOCs examined were benzene; toluene; ethylbenzene; o-, m-, and p-xylene; 1,2,4- and 1,3,5-trimethylbenzene; m-cresol; and naphthalene. Salmonella were exposed at the air-agar interface to the generated atmospheres for 1, 2, 4, 8, or 16 h. Dark-control exposures produced non-mutagenic atmospheres, illustrating that the gas-phase precursor VOCs were not mutagenic at the concentrations tested. Under irradiation, all but m-cresol and naphthalene produced mutagenic atmospheres, with potencies ranging from 2.0 (p-xylene) to 11.4 (ethylbenzene) revertants m3 mgC−1 h−1. The mutagenicity was due exclusively to direct-acting late-generation products of the photooxidation reactions. Gas-phase chemical analysis showed that a number of oxidized organic chemical species enhanced during the irradiated exposure experiments correlated (r ≥ 0.81) with the mutagenic potencies of the atmospheres. Molecular formulas assigned to these species indicated that they likely contained peroxy acid, aldehyde, alcohol, and other functionalities. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82993
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: National Exposure Research Laboratory, United States Environmental Protection Agency, Research Triangle ParkNC, United States; National Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency, Research Triangle ParkNC, United States; Oak Ridge Institute for Science and Education, National Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency, Research Triangle ParkNC, United States; Jacobs Technology, Cary, NC, United States
Recommended Citation:
Riedel T,P,, DeMarini D,et al. Mutagenic atmospheres resulting from the photooxidation of aromatic hydrocarbon and NOx mixtures[J]. Atmospheric Environment,2018-01-01,178