Evolution of particulate sulfate and nitrate along the Asian dust pathway: Secondary transformation and primary pollutants via long-range transport

Wang, Qiongzhen; Zhuang, Guoshun; Huang, Kan; Liu, Tingna; Lin, Yanfen; Deng, Congrui; Fu, Qingyan; Fu, Joshua S.; Chen, Jiakuan; Zhang, Wenjie; Yiming, Mijiti

doi:10.1016/j.atmosres.2015.09.013

Cited by 55 publications

(23 citation statements)

References 39 publications

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“…Levels of K + and NO 3 -have been shown to increase during agricultural waste burning periods (Ezcurra et al, 2001). The third component contained high loadings of Na + and Mg, which are mainly soil characteristics (Nava et al, 2015;Wang et al, 2016). Moreover, a high negative loading of Cl -is shown, meaning , which likely came from combustion sources, agricultural activities and soil re-suspension, respectively.…”

Section: Principal Components Analysis (Pca)mentioning

confidence: 99%

“…SO 4 2-is a source associated with the formation of secondary sulfate aerosols from combustion sources (Tao et al, 2013;Huang et al, 2014), while NH 4 + originates from agricultural activity (Zhang et al, 2007). Zn probably originated from vehicles and fossil fuel combustion (Nava et al, 2015;Longhin et al, 2016), while Al and Ca 2+ mostly characterize crustal origins (Al-Khashman, 2009;Tao et al, 2013;Wang et al, 2016). The second component reflected high loadings of NO 3 -, K + and levoglucosan, representing the contribution of BB (Ruy et al, 2007;Zhang et al, 2007;Jung et al, 2014;Huang et al, 2014).…”

Section: Principal Components Analysis (Pca)mentioning

confidence: 99%

“…Another important ion is Na + , which consists mostly of crustal origins (Tao et al, 2013;Jaafar et al, 2014;Wang et al, 2016) and was present in relatively high concentrations during the BB period. Open burning increases soil temperature and, when it is sufficiently elevated, the chemicals can be released from the soil into the air (Williams et al, 1992;Jimenez et al, 2006).…”

Section: Concentrations Of Pm 25 -Bound Ionsmentioning

confidence: 99%

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Investigation of Biomass Burning Chemical Components over Northern Southeast Asia during 7-SEAS/BASELInE 2014 Campaign

Khamkaew

Chantara

Janta

et al. 2016

Aerosol Air Qual. Res.

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This study investigates the chemical components of biomass burning (BB) aerosols obtained from Doi Ang Khang (DAK; near BB source) and Chiang Mai University (CMU; an urban location) over northern Southeast Asia in dry season (March to mid-April) 2014. PM 2.5 (particulate matter with an aerodynamic diameter less than or equal to 2.5 µm) samples were collected over a 24-h sampling period as a part of the Seven South East Asian Studies ) and CMU (90.7-93.1 µg m -3 ) were not significantly different (p > 0.05) and well correlated (r = 0.8), and likely originated from similar source origins. The number of fire hotspots was particularly high during 20-21 March (greater than 200) and, consequently, peaks of PM 2.5 were recorded at both sites. The most abundant elements at both sampling sites were K (49-50% of total elements), Al (26-31%), Mg (16%) and Zn (4-7%), whereas SO 4 2-(30-38% of total ions), NO 3 -(13-20%), Na + (16-20%) and NH 4 + (14-15%) were the most abundant ions. Concentrations of levoglucosan and K + (BB tracers) were well correlated (r = 0.5 for CMU and 0.7 for DAK) confirming that the PM 2.5 detected in these areas were mainly influenced by BB activity. Principal component analysis (PCA) revealed that BB, road traffic, agricultural activity and soil re-suspension were plausible sources of PM 2.5 over the study locations. Apart from local sources, the influence of long-range transport was also investigated by way of three-day backward trajectory analysis.

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Section: Principal Components Analysis (Pca)mentioning

confidence: 99%

Section: Principal Components Analysis (Pca)mentioning

confidence: 99%

Section: Concentrations Of Pm 25 -Bound Ionsmentioning

confidence: 99%

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Investigation of Biomass Burning Chemical Components over Northern Southeast Asia during 7-SEAS/BASELInE 2014 Campaign

Khamkaew

Chantara

Janta

et al. 2016

Aerosol Air Qual. Res.

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“…During long-range transport, dust particles may mix with anthropogenic air pollutants and consequently undergo complicated chemical reactions Li et al, 2014;Ma et al, 2012;Q. Z. Wang et al, 2011Q. Z. Wang et al, , 2016Xu et al, 2014;Yang et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

The concentration, source and deposition flux of ammonium and nitrate in atmospheric particles during dust events at a coastal site in northern China

Liu

Yao

et al. 2018

Atmos. Chem. Phys.

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Abstract. Asian dust has been reported to carry anthropogenic reactive nitrogen during transport from source areas to the oceans. In this study, we attempted to characterize NH 4 and NO − 3 in each total suspended particle (TSP) sample, the samples can be classified into increasing or decreasing types. In Category 1, the concentrations of NH + 4 and NO − 3 were 20-440 % higher in dust day samples relative to samples collected immediately before or after a dust event. These concentrations decreased by 10-75 % in the dust day samples in Categories 2 and 3. Back trajectory analysis suggested that multiple factors, such as the transport distance prior to the reception site, the mixing layer depth on the transport route and the residence time across highly polluted regions, might affect the concentrations of NH .

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“…Dust storms in East China mainly originate from the Taklimakan and Gobi Deserts (Peltier et al, 2008;McNaughton et al, 2009;Uno et al, 2009). Many studies have focused on inorganic elements, soluble water ions, and organic carbon and elemental carbon in dust storms (Nie et al, 2012;Wang et al, 2016), but very few have studied organic pollutants in the particles of dust storms (Hou et al, 2006), especially NPAHs and OPAHs, which are sometimes more carcinogenic and mutagenic than their parent compounds (Durant et al, 1996;Durant et al, 1998;Lundstedt et al, 2007). Although the concentrations of certain NPAHs are much lower than those of their parent PAHs, some NPAHs exhibited high direct teratogenicity in animal assays (Pitts Jr et al, 1978) and which was confirmed rapidly in assays based on human cells (Durant et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Impact of Dust Storms on NPAHs and OPAHs in PM2.5 in Jinan, China, in Spring 2016: Concentrations, Health Risks, and Sources

Pan

Yang

Chen³

et al. 2018

Aerosol Air Qual. Res.

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To better understand the influence of dust storms on nitrogen polycyclic aromatic hydrocarbons (NPAHs) and oxygen polycyclic aromatic hydrocarbons (OPAHs), PM 2.5 was collected using prebaked quartz filters at Shandong University, Jinan, China, in spring 2016. The concentrations of 16 NPAHs and 5 OPAHs in PM 2.5 were measured using gas chromatographymass spectrometry. The highest concentration of NPAHs was recorded during dust storm 1 (DS1; 4.62 ng m -3 ), which was higher than those recorded during haze (2.28 ng m -3 ) and on clear days (0.17 ng m -3 ). The concentrations of 2+3N-FLA and 9N-ANT were considerably higher during haze and dust storms. The total concentration of OPAHs was highest during haze (7.72 ng m -3 ) and was 2-4.2 times higher than those during DS1, dust storm 2 (DS2), dust storm 3 (DS3) (all 2.38-3.07 ng m -3 ) and on clear days (1.82 ng m -3 ). The three most abundant OPAHs were 9-fluorenone, 9,10-anthraquinone, and naphthalene-1-aldehyde during all studied periods. The 2+3N-FLA/1N-PYR ratio indicated that NPAHs were dominated by secondary generation throughout the sampling period and that dust storm days were more conducive to the secondary generation of NPAHs than were hazy days. During dust storms, NPAHs and OPAHs were influenced by longdistance transport originating in Mongolia and Inner Mongolia. NPAHs and OPAHs in PM 2.5 were mainly derived from vehicle exhausts, solid fuel combustion, secondary generation, and crustal sources throughout the sampling period. The highest ∑BaPeq value (0.0928 ng m -3 ) was recorded during DS2. The incremental lifetime cancer risk and total risk on hazy days and the three dust storm episodes were higher than those on clear days.

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Evolution of particulate sulfate and nitrate along the Asian dust pathway: Secondary transformation and primary pollutants via long-range transport

Cited by 55 publications

References 39 publications

Investigation of Biomass Burning Chemical Components over Northern Southeast Asia during 7-SEAS/BASELInE 2014 Campaign

Investigation of Biomass Burning Chemical Components over Northern Southeast Asia during 7-SEAS/BASELInE 2014 Campaign

The concentration, source and deposition flux of ammonium and nitrate in atmospheric particles during dust events at a coastal site in northern China

Impact of Dust Storms on NPAHs and OPAHs in PM2.5 in Jinan, China, in Spring 2016: Concentrations, Health Risks, and Sources

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