DOI: 10.1016/j.atmosenv.2017.10.047
Scopus记录号: 2-s2.0-85032659715
论文题名: Receptor modelling and risk assessment of volatile organic compounds measured at a regional background site in South Africa
作者: Jaars K ; , Vestenius M ; , van Zyl P ; G ; , Beukes J ; P ; , Hellén H ; , Vakkari V ; , Venter M ; , Josipovic M ; , Hakola H
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 172 起始页码: 133
结束页码: 148
语种: 英语
英文关键词: Anthropogenic VOCs
; Biogenic VOCs
; Health risk assessment
; Positive matrix factorisation
; Welgegund
Scopus关键词: Climate change
; Coal combustion
; Diseases
; Factor analysis
; Factorization
; Fading (radio)
; Health
; Health risks
; Industrial emissions
; Isoprene
; Matrix algebra
; Monoterpenes
; Organic compounds
; Volatile organic compounds
; Anthropogenic factors
; Anthropogenic sources
; Biogenic VOCs
; Bushveld igneous complexes
; Incomplete combustion
; Industrial activities
; Positive matrix factorisation
; Welgegund
; Risk assessment
; 2 methyl 3 buten 2 ol
; benzene
; coal
; ethylbenzene
; isoprene
; limonene
; ortho xylene
; solvent
; toluene
; unclassified drug
; volatile organic compound
; xylene
; air mass
; anthropogenic effect
; atmospheric modeling
; background level
; biogenic emission
; cancer
; climate change
; environmental impact
; factor analysis
; human activity
; pollution effect
; public health
; risk assessment
; source apportionment
; volatile organic compound
; air pollution
; Article
; cancer risk
; climate change
; combustion
; health hazard
; priority journal
; risk assessment
; South Africa
; Gauteng
; Highveld
; Johannesburg
; Mpumalanga
; Pretoria
; South Africa
; Vaal Triangle
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: Volatile organic compounds (VOCs) can have significant impacts on climate and human health. Certain VOCs are proven to be carcinogenic and toxic, which can affect human health directly and indirectly. In order to develop climate change reduction strategies and to assess the impacts of VOCs on human health, it is crucial to determine the sources of VOCs, which can be emitted from biogenic and anthropogenic sources. The aim of this study was to perform source apportionment using positive matrix factorisation (PMF) analysis on VOC data collected at a regional background location affected by the major sources in the interior of South Africa, which include the western- and eastern Bushveld Igneous Complex, the Johannesburg-Pretoria metropolitan conurbation, the Vaal Triangle, the Mpumalanga Highveld and also a region of anti-cyclonic recirculation of air mass over the interior of South Africa. In addition, a risk assessment study was also performed in view of the major source regions affecting Welgegund in order to quantify the impacts of anthropogenic VOCs measured at Welgegund on human health. Measurements were conducted at the Welgegund measurement station located on a commercial farm approximately 100 km west of Johannesburg for a period of more than two years. PMF analysis revealed ten meaningful factor solutions, of which five factors were associated with biogenic emissions and five with anthropogenic sources. Three of the biogenic factors were characterised by a specific biogenic species, i.e. isoprene, limonene and 2-methyl-3-buten-2-ol (MBO), while the other two biogenic factors comprised mixtures of biogenic species with different tracer species. The temporal factor contribution for the isoprene, limonene and MBO factors correlated relatively well with the seasonal wet pattern. One anthropogenic factor was associated with emissions from a densely populated anthropogenic source region to the east of Welgegund with a large number of industrial activities, while another anthropogenic factor could be related to coal combustion. An anthropogenic factor was also identified that reflected the influence of solvents on atmospheric VOC concentrations, while two anthropogenic factors were determined that indicated the influence of farming activities in close proximity to Welgegund. A lifetime cancer risk- (LCR) and non-cancer hazard ratio (HR) assessment study conducted for VOCs measured at Welgegund in relation to three source regions indicated that the non-cancerous influence of VOCs measured in the source regions is significantly lower compared to the cancerous influence of these species on human health, which raises concern. However, LCR values were within an acceptable range. Factor analysis performed in this paper also identified sources that could be targeted to minimise VOC-related LCRs and HRs e.g. benzene-related cancers can be reduced by targeting incomplete combustion sources and coal combustion. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83144
Appears in Collections: 气候变化事实与影响
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作者单位: Chemical Resource Beneficiation, North-West University, Potchefstroom, South Africa; Finnish Meteorological Institute, Atmospheric Composition Unit, P.O. Box 503, Helsinki, Finland
Recommended Citation:
Jaars K,, Vestenius M,, van Zyl P,et al. Receptor modelling and risk assessment of volatile organic compounds measured at a regional background site in South Africa[J]. Atmospheric Environment,2018-01-01,172