Receptor modeling of ambient VOC at Santiago, Chile

Jorquera, Héctor; Rappenglück, Bernhard

doi:10.1016/j.atmosenv.2004.04.030

Cited by 93 publications

(42 citation statements)

References 37 publications

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“…139,209,210 It has shown good performance at discriminating between source profiles with similar compositions and the ability to find better, cleaner source profiles than can be obtained with UNMIX. 210,211 Likewise, PMF proved better than other models such as CMB, PCA/ absolute principal component scores (APCS), and UNMIX in extracting the major source profiles using a dataset for PM 2.5 mass concentrations at the U.S. Environmental Protection Agency (EPA) Jefferson Street Supersite in Atlanta, GA. 212 Another important aspect of PMF is that it does not rely on information from the correlation matrix but utilizes a point-by-point least-squares minimization scheme. Recently, CMB and PMF approaches were used to estimate the source contributions to PM 2.5 levels with an organic marker compound and it was found that the impact of direct emissions from biomass combustion can be isolated from the effects of primary emissions on secondary sulfate formation.…”

Section: Pmf Modelmentioning

confidence: 99%

Review of Recent Advances in Detection of Organic Markers in Fine Particulate Matter and Their Use for Source Apportionment

Lin

Lee

Eatough

2010

Journal of the Air & Waste Management Association

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Fine particulate matter is believed to be more toxic than coarse particles and to exacerbate health problems such as respiratory and cardiopulmonary diseases. Specific organic compounds within atmospheric fine particulate material can be used to differentiate specific inputs from various emissions and thus is helpful in identifying the major urban air pollution sources that contribute to these health problems. Particular marker compounds that carry signature information about different emission sources (i.e., gasoline or diesel motor vehicles, wood smoke, meat cooking, vegetative detritus, and cigarette smoke) are reviewed. Aerosol organic types (e.g., from mass spectrometry data, which can also help in elucidation of carbonaceous material sources) are also discussed. Apportionment of the primary source contributions and atmospheric processes contributing to fine particulate matter and fine particulate organic material concentrations are outlined. This review provides an overview of the latest developments in chemical characterization approaches for identification and quantification of compounds in complex organic mixtures associated with fine atmospheric particles and their use in chemical mass balance (CMB) and positive matrix factorization (PMF) source apportionment models.

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Section: Pmf Modelmentioning

confidence: 99%

Review of Recent Advances in Detection of Organic Markers in Fine Particulate Matter and Their Use for Source Apportionment

Lin

Lee

Eatough

2010

Journal of the Air & Waste Management Association

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“…Over the last decade, this source receptor approach has been intensively used in urban areas (e.g., Baudic et al, 2016;Salameh et al, 2016;Yuan et al, 2012) and in remote/rural environments Leuchner et al, 2015;Michoud et al, 2017;Sauvage et al, 2009). Other receptor models such as principal component analysis/absolute principal component scores (PCA/APCSs) (Guo et al, 2007), UNMIX (Jorquera and Rappenglück, 2004) and chemical mass balance (CMB) (Badol et al, 2008) have been previously used in VOC source apportionment. Studies show that PMF models are more efficient in identifying source profiles (Jorquera and Rappenglück, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…Other receptor models such as principal component analysis/absolute principal component scores (PCA/APCSs) (Guo et al, 2007), UNMIX (Jorquera and Rappenglück, 2004) and chemical mass balance (CMB) (Badol et al, 2008) have been previously used in VOC source apportionment. Studies show that PMF models are more efficient in identifying source profiles (Jorquera and Rappenglück, 2004). Yuan et al (2012) stressed the importance of the different reactivity of VOCs and the impact of photochemical aging on the interpretability of the resolved factors as source profiles that have not been considered in most of the studies applying PMF.…”

Section: Introductionmentioning

confidence: 99%

Origin and variability in volatile organic compounds observed at an Eastern Mediterranean background site (Cyprus)

et al. 2017

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Abstract. More than 7000 atmospheric measurements of over 60 C 2 −C 16 volatile organic compounds (VOCs) were conducted at a background site in Cyprus during a 1-month intensive field campaign held in March 2015. This exhaustive dataset consisted of primary anthropogenic and biogenic VOCs, including a wide range of source-specific tracers, and oxygenated VOCs (with various origins) that were measured online by flame ionization detection-gas chromatography and proton transfer mass spectrometry. Online submicron aerosol chemical composition was performed in parallel using an aerosol mass spectrometer. This study presents the high temporal variability in VOCs and their associated sources. A preliminary analysis of their time series was performed on the basis of independent tracers (NO, CO, black carbon), meteorological data and the clustering of air mass trajectories. Biogenic compounds were mainly attributed to a local origin and showed compound-specific diurnal cycles such as a daily maximum for isoprene and a nighttime maximum for monoterpenes. Anthropogenic VOCs as well as oxygenated VOCs displayed higher mixing ratios under the influence of continental air masses (i.e., western Asia), indicating that long-range transport significantly contributed to the VOC levels in the area. Source apportionment was then conducted on a database of 20 VOCs (or grouped VOCs) using a source receptor model. The positive matrix factorization and concentration field analyses were hence conducted to identify and characterize covariation factors of VOCs that were representative of primary emissions as well as chemical transformation processes. A six-factor PMF solution was selected, namely two primary biogenic factors (relative contribution of 43 % to the total mass of VOCs) for different types of emitting vegetation; three anthropogenic factors (shortlived combustion source, evaporative sources, industrial and evaporative sources; 21 % all together), identified as being either of local origin or from more distant emission zones (i.e., the south coast of Turkey); and a last factor (36 %) associated with regional background pollution (air masses transported both from the Western and Eastern Mediterranean regions). One of the two biogenic and the regional background factors were found to be the largest contributors to the VOC concentrations observed at our sampling site. Finally, a combined analysis of VOC PMF factors with source-apportioned organic aerosols (OAs) helped to better distinguish between anthropogenic and biogenic influences on the aerosol and gas phase compositions. The highest OA concentrations were observed when the site was influenced by air masses rich in Published by Copernicus Publications on behalf of the European Geosciences Union. 11356C. Debevec et al.: Volatile organic compounds at an Eastern Mediterranean background site semi-volatile OA (less oxidized aerosols) originating from the southwest of Asia, in contrast with OA factor contributions associated with the remaining source regions. A reinforcement of sec...

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“…17,18 Both VOCs and NOx are precursors of ground-level ozone, which can interfere with lung function and aggravate diseases such as asthma, chronic bronchitis, and emphysema. High levels of SOx or PM can also irritate the respiratory system, contribute to respiratory illness, and aggravate asthma and existing heart and lung disease.…”

Section: Discussionmentioning

confidence: 99%

Study of air quality and noise levels in King Fahad International airport in Dammam, Saudi Arabia

Salama

Obireed

Qarni

et al. 2016

Int J Community Med Public Health

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Receptor modeling of ambient VOC at Santiago, Chile

Cited by 93 publications

References 37 publications

Review of Recent Advances in Detection of Organic Markers in Fine Particulate Matter and Their Use for Source Apportionment

Review of Recent Advances in Detection of Organic Markers in Fine Particulate Matter and Their Use for Source Apportionment

Origin and variability in volatile organic compounds observed at an Eastern Mediterranean background site (Cyprus)

Study of air quality and noise levels in King Fahad International airport in Dammam, Saudi Arabia

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