Mixing state of biomass burning particles by single particle aerosol mass spectrometer in the urban area of PRD, China

Bi, Xinhui; Zhang, Guohua; Li, Lei; Wang, Xinming; Li, Mei; Sheng, Guoying; Fu, Jiamo; Zhou, Zhen

doi:10.1016/j.atmosenv.2011.03.034

Cited by 165 publications

(118 citation statements)

References 60 publications

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“…However, what is meant by this in the literature is that the individual particles are mixtures of chemical species, many from different sources (e.g., Bi et al, 2011;Li and Shao, 2010;Guazzotti et al, 2001), not that they are of uniform composition. Certainly it has long been known that marine particle composition varies significantly with size (Guazzotti et al, 2001;Neususs et al, 2000;Chuang et al, 2000;Middlebrook et al, 1998) and Kaku et al, 2006.…”

Section: Resultsmentioning

confidence: 99%

A simple relationship between cloud drop number concentration and precursor aerosol concentration for the regions of Earth's large marine stratocumulus decks

et al. 2012

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Abstract. Aircraft-based measurements of cloud condensation nuclei (CCN), accumulation mode and Aitken mode number concentrations, cloud drop number concentration (CDNC), and selected ancillary measurements are presented for the three large, semi-permanent marine stratocumulus decks of the earth (in the Pacific offshore of California and Chile and in the Atlantic offshore of Namibia). Based on these data, a simple linear relationship between CDNC and the accumulation mode number concentration (AMNC) is derived via regression. The slope of the regression is 0.72 ± 0.04 with an R 2 of 0.90, higher than those found for CDNC-CCN linear regressions. Explanations of the relatively favorable CDNC-AMNC relationship and its utility for climate studies are discussed.

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Section: Resultsmentioning

confidence: 99%

A simple relationship between cloud drop number concentration and precursor aerosol concentration for the regions of Earth's large marine stratocumulus decks

et al. 2012

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“…ATOFMS provides real-time, high-time-resolution data on the sizes, compositions, and mixing properties of individual particles (Dall'Osto et al, 2004;Dall'Osto and Harrison, 2006;DeCarlo et al, 2006;Moffet et al, 2008a, b;Bi et al, 2011). It provides good statistic information on single particles; however, the specific components of the particles are difficult to identify from the mass spectra.…”

Section: Analytical Techniques For Particle Mixing Statementioning

confidence: 99%

“…Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) can be used to identify the size and elemental distribution of individual chloride aerosols in the atmosphere, together with the mixing characteristics with other constituents (Barkay et al, 2005;Laskin et al, 2006;Adachi and Buseck, 2008;Chi et al, 2015). The recently developed aerosol time-of-fight mass spectrometry (ATOFMS) can provide the size and chemical composition of a large number of individual aerosols in real time (Moffet et al, 2008b;Bi et al, 2011;Prather et al, 2013). These single-particle techniques have provided new insights and a deeper understanding of the mixing characteristics of chlorine-rich aerosols including sea salts, particles in biomass burning plumes and industrial smoke, and secondary chloride aerosols.…”

Section: Introductionmentioning

confidence: 99%

Mixed Chloride Aerosols and their Atmospheric Implications: A Review

Wang

Yang

et al. 2017

Aerosol Air Qual. Res.

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Natural and anthropogenic chloride aerosols make up a significant fraction of atmospheric particulate matter and play important roles in the boundary layer chemistry. Here we provide a review of the mixing characteristics of chloride aerosols and the subsequent atmospheric implications, which are rarely considered in current field and modeling studies. Single-particle analytical techniques have shown that a large fraction of chlorides mix internally with other components, in particular inorganic salts and organic matters, instead of existing separately. In marine and coastal regions, high proportions of chloride aerosols usually mix with inorganic substances (e.g., Mg, Ca, K, N, S), while small quantities of them are coated by organic matter. In forest, grassland, and agricultural areas, most chlorides in biomass burning particles mix with or are coated by organics. In industrialized urban areas, the chloride aerosols often co-exist with heavy/transition metals (e.g., Zn, Pb) and are coated by organic materials in aged plumes. Moreover, secondary chlorides also mix with mineral dusts, nitrates, and sulfates. The mixing of chloride aerosols with insoluble substances can inhibit their hygroscopic properties, which in turn affects the cloud condensation nuclei activation and heterogeneous reactivity. The encasing of chloride aerosols within light-absorbing substances changes their optical properties and subsequently causes atmospheric warming. This paper emphasizes the complexity of the mixing of chloride aerosols, as well as the potential atmospheric implications thereof, and proposes some research topics deserving future study.

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“…Representative ion peaks for EC-containing particles, as presented in Fig. 2, are EC cluster ions (e.g., m/z AE12 Bi et al, 2011;Pratt et al, 2011;Silva et al, 1999). There are also some other metallic species such as 23…”

Section: General Characteristics Of Ec-containing Particlesmentioning

confidence: 99%

Mixing state of biomass burning particles by single particle aerosol mass spectrometer in the urban area of PRD, China

Cited by 165 publications

References 60 publications

A simple relationship between cloud drop number concentration and precursor aerosol concentration for the regions of Earth's large marine stratocumulus decks

A simple relationship between cloud drop number concentration and precursor aerosol concentration for the regions of Earth's large marine stratocumulus decks

Mixed Chloride Aerosols and their Atmospheric Implications: A Review

Variation of secondary coatings associated with elemental carbon by single particle analysis

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