Observation of atmospheric aerosols at Mt. Hua and Mt. Tai in central and east China during spring 2009 – Part 1: EC, OC and inorganic ions

Wang, G.; Li, J.; Cheng, Chunlei; Hu, S.; Xie, Mingjie; Gao, Shixiang; Zhou, Baowen; Dai, Wenting; Cao, Junji; An, Zhisheng

doi:10.5194/acp-11-4221-2011

Cited by 57 publications

(39 citation statements)

References 74 publications

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“…of Mt. Hua using the same sampling instruments; the related data have been published elsewhere (Wang et al, 2011c(Wang et al, , 2012b and are cited here to investigate the difference in composition and size distribution between the urban ground surface and the mountaintop troposphere.…”

Section: Organic Carbon (Oc) and Elemental Carbon (Ec)mentioning

confidence: 99%

“…Details in size distributions of major species during the same period in the troposphere over Mt. Hua have been reported elsewhere (Wang et al, 2011c) and are cited here for a comparison.…”

Section: Size Distributionmentioning

confidence: 99%

“…Hua and Mt. Tai in comparison to those in the nonevent (Wang et al, 2011c;Wang et al, 2012b). Therefore, a large peak in the coarse fraction and a small peak in the fine fraction were observed for WSOC in Xi'an in the DS II event (Fig.…”

Section: Size Distribution Of Wsoc Wsic and Wson In Xi'anmentioning

confidence: 99%

“…Tai (117 • 06 E, 36 • 15 N), which are respectively situated in Guanzhong Basin, inland China and North China Plain, east coastal China (see Fig. 1 for the locations), to identify the similarity and difference in chemical composition and size distribution of aerosols between the ground surface and the free troposphere (Wang et al, 2011c(Wang et al, , 2012b. During the sampling period a massive dust storm originating from the Gobi desert simultaneously occurred at the three sites.…”

Section: G H Wang Et Al: Impact Of Gobi Desert Dust On Aerosol Chementioning

confidence: 99%

“…Hua and Mt. Tai have been measured to recognize the horizontal differences in aerosol chemistry between the two mountain areas (Wang et al, 2011c(Wang et al, , 2012b. We found Gobi desert plant is the major source of organic aerosols that resulted in a sharp increase in OC at the two alpine sites when dust was present (Wang et al, 2012b).…”

Section: G H Wang Et Al: Impact Of Gobi Desert Dust On Aerosol Chementioning

confidence: 99%

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Impact of Gobi desert dust on aerosol chemistry of Xi'an, inland China during spring 2009: differences in composition and size distribution between the urban ground surface and the mountain atmosphere

et al. 2013

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Abstract. Composition and size distribution of atmospheric aerosols from Xi'an city (∼ 400 m, altitude) in inland China during the spring of 2009 including a massive dust event on 24 April were measured and compared with a parallel measurement at the summit (2060 m, altitude) of Mt. Hua, an alpine site nearby Xi'an. EC (elemental carbon), OC (organic carbon) and major ions in the city were 2-22 times higher than those on the mountaintop during the whole sampling period. Compared to that in the non-dust period a sharp increase in OC was observed at both sites during the dust period, which was mainly caused by an input of biogenic organics from the Gobi desert. However, adsorption/heterogeneous reaction of gaseous organics with dust was another important source of OC in the urban, contributing 22 % of OC in the dust event. In contrast to the mountain atmosphere where fine particles were less acidic when dust was present, the urban fine particles became more acidic in the dust event than in the non-dust event, mainly due to enhanced heterogeneous formation of nitrate and diluted NH 3 . Cl − and NO − 3 in the urban air during the dust event significantly shifted toward coarse particles. Such redistributions were further pronounced on the mountaintop when dust was present, resulting in both ions almost entirely staying in coarse particles. On the contrary, no significant spatial difference in size distribution of SO 2− 4 was found between the urban ground surface and the mountain atmosphere, which dominated in the fine mode (< 2.1 µm) during the nonevent and comparably distributed in the fine (< 2.1 µm) and coarse (> 2.1 µm) modes during the dust event.

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Section: Organic Carbon (Oc) and Elemental Carbon (Ec)mentioning

confidence: 99%

“…Details in size distributions of major species during the same period in the troposphere over Mt. Hua have been reported elsewhere (Wang et al, 2011c) and are cited here for a comparison.…”

Section: Size Distributionmentioning

confidence: 99%

Section: Size Distribution Of Wsoc Wsic and Wson In Xi'anmentioning

confidence: 99%

Section: G H Wang Et Al: Impact Of Gobi Desert Dust On Aerosol Chementioning

confidence: 99%

Section: G H Wang Et Al: Impact Of Gobi Desert Dust On Aerosol Chementioning

confidence: 99%

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Impact of Gobi desert dust on aerosol chemistry of Xi'an, inland China during spring 2009: differences in composition and size distribution between the urban ground surface and the mountain atmosphere

et al. 2013

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Evolution of trace elements in the planetary boundary layer in southern China: Effects of dust storms and aerosol‐cloud interactions

Wang

Zhou³

et al. 2017

JGR Atmospheres

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Aerosols and cloud water were analyzed at a mountaintop in the planetary boundary layer in southern China during March–May 2009, when two Asian dust storms occurred, to investigate the effects of aerosol‐cloud interactions (ACIs) on chemical evolution of atmospheric trace elements. Fe, Al, and Zn predominated in both coarse and fine aerosols, followed by high concentrations of toxic Pb, As, and Cd. Most of these aerosol trace elements, which were affected by dust storms, exhibited various increases in concentrations but consistent decreases in solubility. Zn, Fe, Al, and Pb were the most abundant trace elements in cloud water. The trace element concentrations exhibited logarithmic inverse relationships with the cloud liquid water content and were found highly pH dependent with minimum concentrations at the threshold of pH ~5.0. The calculation of Visual MINTEQ model showed that 80.7–96.3% of Fe(II), Zn(II), Pb(II), and Cu(II) existed in divalent free ions, while 71.7% of Fe(III) and 71.5% of Al(III) were complexed by oxalate and fluoride, respectively. ACIs could markedly change the speciation distributions of trace elements in cloud water by pH modification. The in‐cloud scavenging of aerosol trace elements likely reached a peak after the first 2–3 h of cloud processing, with scavenging ratios between 0.12 for Cr and 0.57 for Pb. The increases of the trace element solubility (4–33%) were determined in both in‐cloud aerosols and postcloud aerosols. These results indicated the significant importance of aerosol‐cloud interactions to the evolution of trace elements during the first several cloud condensation/evaporation cycles.

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Ionic and elemental composition of PM2.5 aerosols over the Caribbean Sea in the Tropical Atlantic

2016

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Observation of atmospheric aerosols at Mt. Hua and Mt. Tai in central and east China during spring 2009 – Part 1: EC, OC and inorganic ions

Cited by 57 publications

References 74 publications

Impact of Gobi desert dust on aerosol chemistry of Xi'an, inland China during spring 2009: differences in composition and size distribution between the urban ground surface and the mountain atmosphere

Impact of Gobi desert dust on aerosol chemistry of Xi'an, inland China during spring 2009: differences in composition and size distribution between the urban ground surface and the mountain atmosphere

Evolution of trace elements in the planetary boundary layer in southern China: Effects of dust storms and aerosol‐cloud interactions

Ionic and elemental composition of PM2.5 aerosols over the Caribbean Sea in the Tropical Atlantic

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