Sources of excess urban carbonaceous aerosol in the Pearl River Delta Region, China

Zheng, Mei; Wang, Fu; Hagler, Gayle; Hou, Ximei; Bergin, Michael H.; Cheng, Yuan; Salmon, Lynn G.; Schauer, James J.; Louie, Peter K.K.; Zeng, Limin; Zhang, Yuanhang

doi:10.1016/j.atmosenv.2010.09.041

Cited by 41 publications

(13 citation statements)

References 25 publications

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“…The concentration levels of OC and EC (Table 2) are both much lower than those reported in different places in Guangzhou from the previous studies using both the NIOSH protocol (Andreae et al, 2008;Hagler et al, 2006;Zheng et al, 2011) and the IMPROVE protocol (Cao et al, 2003(Cao et al, , 2004Huang et al, 2012;Tao et al, 2014). Vehicular emissions have long been suggested as one of the major sources of carbonaceous aerosol in Guangzhou (Andreae et al, 2008;Cao et al, 2012).…”

Section: Carbonaceous Fractionsmentioning

confidence: 68%

Characterization of PM 2.5 and the major chemical components during a 1-year campaign in rural Guangzhou, Southern China

Lai

Yan

Ding

et al. 2016

Atmospheric Research

114

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Section: Carbonaceous Fractionsmentioning

confidence: 68%

Characterization of PM 2.5 and the major chemical components during a 1-year campaign in rural Guangzhou, Southern China

Lai

Yan

Ding

et al. 2016

Atmospheric Research

114

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“…[106][107][108][109][110] Yu et al [108] examined non-polar organic compounds in ambient aerosol collected in Hong Kong using TD-GC/MS. For the area of study, hopanes and alkanes were apportioned to local emissions from gasoline vehicles, whereas PAHs were ascribed to regional emissions from rice straw burning and coal combustion.…”

Section: Field and Test Facilities Studies Anthropogenic Aerosolsmentioning

confidence: 99%

Mass spectrometric approaches for chemical characterisation of atmospheric aerosols: critical review of the most recent advances

Laskin¹,

Laskin²,

Nizkorodov³

2012

Environ. Chem.

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Environmental context. Atmospheric aerosols have profound effects on the environment through several physicochemical processes, such as absorption and scattering of sunlight, heterogeneous gas-particle reactions and adverse effects on the respiratory and cardiovascular systems. Understanding aerosol atmospheric chemistry and its environmental impact requires comprehensive characterisation of the physical and chemical properties of particles. Results from mass spectrometry provide important new insights into the origin of atmospheric aerosols, the evolution of their physicochemical properties, their reactivity and their effect on the environment.Abstract. This manuscript presents an overview of the most recent instrument developments for the field and laboratory applications of mass spectrometry (MS) to investigate the chemistry and physics of atmospheric aerosols. A range of MS instruments, employing different sample introduction methods, ionisation and mass detection techniques are used both for 'online' and 'offline' characterisation of aerosols. Online MS techniques enable detection of individual particles with simultaneous measurement of particle size distributions and aerodynamic characteristics and are ideally suited for field studies that require high temporal resolution. Offline MS techniques provide a means for detailed molecular-level analysis of aerosol samples, which is essential to gain fundamental knowledge regarding aerosol chemistry, mechanisms of particle formation and atmospheric aging. Combined, complementary MS techniques provide comprehensive information on the chemical composition, size, morphology and phase of aerosols -data of key importance for evaluating hygroscopic and optical properties of particles, their health effects, understanding their origins and atmospheric evolution. Over the last few years, developments and applications of MS techniques in aerosol research have expanded remarkably as evident by skyrocketing publication statistics. The goal of this review is to present the most recent developments in the field of aerosol mass spectrometry for the time period of late 2010 to early 2012, which have not been conveyed in previous reviews.

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“…To our best knowledge, by far there is no study of size-resolved organic and inorganic aerosol with a time resolution of minutes in PRD. Past source apportionments of organic aerosol in this region usually rely on organic carbon (OC) to elemental carbon (EC) ratio method from offline filter measurements (Cao et al, 2003(Cao et al, , 2004 or chemical mass balance modeling with molecular markers with 24-h filter samples (Zheng et al, 2011). Despite the lack of high time resolution, these methods could contain uncertainties since they are unable to take into account seasonal and diurnal variations in emission sources of carbonaceous aerosol (Turpin and Lim, 2001).…”

Section: Introductionmentioning

confidence: 99%

Characterization and source apportionment of submicron aerosol with aerosol mass spectrometer during the PRIDE-PRD 2006 campaign

et al. 2011

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Abstract. Size-resolved chemical compositions of nonrefractory submicron aerosol were measured using an Aerodyne quadrupole aerosol mass spectrometer (Q-AMS) at the rural site Back Garden (BG), located ∼50 km northwest of Guangzhou in July 2006. This paper characterized the submicron aerosol particles of regional air pollution in Pearl River Delta (PRD) in the southern China. Organics and sulfate dominated the submicron aerosol compositions, with average mass concentrations of 11.8 ± 8.4 µg m −3 and 13.5 ± 8.7 µg m −3 , respectively. Unlike other air masses, the air masses originated from Southeast-South and passing through the PRD urban areas exhibited distinct bimodal size distribution characteristics for both organics and sulfate: the first mode peaked at vacuum aerodynamic diameters (D va ) ∼200 nm and the second mode occurred at D va from 300-700 nm. With the information from AMS, it was found from this study that the first mode of organics in PRD regional air masses was contributed by both secondary organic aerosol formation and combustion-related emissions, which is different from most findings in other urban areas (first mode of organics primarily from combustionrelated emissions). The analysis of AMS mass spectra data by positive matrix factorization (PMF) model identified three sources of submicron organic aerosol including hydrocarbon-like organic aerosol (HOA), low volatility oxygenated organic aerosol (LV-OOA) and semi-volatile oxyCorrespondence to: Y. H. Zhang (yhzhang@pku.edu.cn) genated organic aerosol (SV-OOA). The strong correlation between HOA and EC indicated primary combustion emissions as the major source of HOA while a close correlation between SV-OOA and semi-volatile secondary species nitrate as well as between LV-OOA and nonvolatile secondary species sulfate suggested secondary aerosol formation as the major source of SV-OOA and LV-OOA at the BG site. However, LV-OOA was more aged than SV-OOA as its spectra was highly correlated with the reference spectra of fulvic acid, an indicator of aged and oxygenated aerosol. The origin of HOA and OOA (the sum of LV-OOA and SV-OOA) has been further confirmed by the statistics that primary organic carbon (POC) and secondary organic carbon (SOC), estimated by the EC tracer method, were closely correlated with HOA and OOA, respectively. The results of the EC tracer method and of the PMF model revealed that primary organic aerosol (POA) constituted ∼34-47 % of OA mass and secondary organic aerosol (SOA) constituted ∼53-66 % of regional organic aerosol in PRD during summer season. The presence of abundant SOA was consistent with water soluble organic carbon (WSOC) results (accounting for ∼60 % of OC on average) by Miyazaki et al. (2009) for the same campaign. OOA correlated well with WSOC at the BG site, indicating that most OOA were water soluble. More specifically, approximately 86 % of LV-OOA and 61 % of SV-OOA were estimated as water soluble species on the basis of carbon content comparison.

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Sources of excess urban carbonaceous aerosol in the Pearl River Delta Region, China

Cited by 41 publications

References 25 publications

Characterization of PM 2.5 and the major chemical components during a 1-year campaign in rural Guangzhou, Southern China

Characterization of PM 2.5 and the major chemical components during a 1-year campaign in rural Guangzhou, Southern China

Mass spectrometric approaches for chemical characterisation of atmospheric aerosols: critical review of the most recent advances

Characterization and source apportionment of submicron aerosol with aerosol mass spectrometer during the PRIDE-PRD 2006 campaign

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