The transformation of solid atmospheric particles into liquid droplets through heterogeneous chemistry: Laboratory insights into the processing of calcium containing mineral dust aerosol in the troposphere

Krueger, Brenda J.; Grassian, Vicki H.; Laskin, Alexander; Cowin, James P.

doi:10.1029/2002gl016563

Cited by 142 publications

(156 citation statements)

References 15 publications

Supporting

Mentioning

141

Contrasting

Order By: Relevance

“…Several field studies have indicated that mineral dust particles, through heterogeneous uptake of acidic gases, acquire coatings of sulfates (Kojima et al, 2006;Sullivan et al, 2007), and/or nitrates (Zhang et al, 2000;Laskin et al, 2005a;Matsuki et al, 2005;Hwang and Ro, 2006). Although laboratory studies provided detailed information regarding nitrate coatings formed through heterogeneous reactions (Krueger et al, 2003(Krueger et al, , 2004Laskin et al, 2005b), few studies present data on nitrate coatings detected in ambient particles.…”

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

Observation of nitrate coatings on atmospheric mineral dust particles

2009

View full text Add to dashboard Cite

Abstract. Nitrate compounds have received much attention because of their ability to alter the hygroscopic properties and cloud condensation nuclei (CCN) activity of mineral dust particles in the atmosphere. However, very little is known about specific characteristics of ambient nitratecoated mineral particles on an individual particle scale. In this study, sample collection was conducted during brown haze and dust episodes between 24 May and 21 June 2007 in Beijing, northern China. Sizes, morphologies, and compositions of 332 mineral dust particles together with their coatings were analyzed using transmission electron microscopy (TEM) coupled with energy-dispersive X-ray (EDX) microanalyses. Structures of some mineral particles were verified using selected-area electron diffraction (SAED). TEM observation indicates that approximately 90% of the collected mineral particles are covered by visible coatings in haze samples whereas only 5% are coated in the dust sample. 92% of the analyzed mineral particles are covered with Ca-, Mg-, and Na-rich coatings, and 8% are associated with K-and S-rich coatings. The majority of coatings contain Ca, Mg, O, and N with minor amounts of S and Cl, suggesting that they are possibly nitrates mixed with small amounts of sulfates and chlorides. These nitrate coatings are strongly correlated with the presence of alkaline mineral components (e.g., calcite and dolomite). CaSO 4 particles with diameters from 10 to 500 nm were also detected in the coatings including Ca(NO 3 ) 2 and Mg(NO 3 ) 2 . Our results indicate that mineral particles in brown haze episodes were involved in atmospheric heteroCorrespondence to: L. Y. Shao (shaol@cumtb.edu.cn) geneous reactions with two or more acidic gases (e.g., SO 2 , NO 2 , HCl, and HNO 3 ). Mineral particles that acquire hygroscopic nitrate coatings tend to be more spherical and larger, enhancing their light scattering and CCN activity, both of which have cooling effects on the climate.

show abstract

Section: Introductionmentioning

confidence: 96%

“…When aged by soluble aerosol components, these mineral particles will have enhanced hygroscopicity and altered sizes and shapes (Krueger et al, 2003(Krueger et al, , 2004Laskin et al, 2005b). As a result, the coated dust particles become more efficient CCN (Kelly et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Observation of nitrate coatings on atmospheric mineral dust particles

2009

View full text Add to dashboard Cite

show abstract

“…With respect to the Ca-rich particles collected on the reactive nitron reagent film, At least 60% up to 90% of the Carich particles on the reactive nitron reagent film contained NO − 3 . It becomes evident that mineral dust particles enriched in carbonate minerals such as calcite (CaCO 3 ) and dolomite (MgCa(CO 3 ) 2 ) react with HNO 3 gas to form extremely hygroscopic Ca(NO 3 ) 2 or Mg(NO 3 ) 2 which are suggested to readily deliquesce under subsaturated atmospheric conditions (Krueger et al, 2003(Krueger et al, , 2004Laskin et al, 2005;Matsuki et al, 2005b). Although carbonate minerals are reported to comprise significant fraction of the atmospheric irregular dust particles in many parts of the globe (Ganor and Mamane, 1982;Okada and Kai, 1995; 2004; Kandler et al, 2007), irregularly shaped Ca-rich particles were hardly found in this study.…”

Section: Morphology and Compositionmentioning

confidence: 99%

Cloud processing of mineral dust: direct comparison of cloud residual and clear sky particles during AMMA aircraft campaign in summer 2006

et al. 2010

View full text Add to dashboard Cite

Abstract. In order to gain insights into the characteristics of the mineral dust particles incorporated in the actual cloud droplets and the related cloud processing, the French ATR-42 research aircraft equipped both with a counterflow virtual impactor (CVI) and community aerosol inlet was deployed in Niamey, Niger (13 • 30 N, 02 • 05 E) in August 2006 within the framework of the African Monsoon Multidisciplinary Analysis (AMMA) project.Cloud residual and clear-sky particles were collected separately and analyzed individually using a transmission electron microscope (TEM) and a scanning electron microscope coupled with an energy dispersive X-ray spectroscopy (SEM-EDX). The analysis revealed interesting characteristics on the coarse dust particles (Dp>1µm), particularly those which likely had acted as CCN.Traces of heterogeneously formed secondary sulfate, chloride and nitrate were found on many dust particles (though fraction of sulfate may be present in the form of gypsum as primary dust component). These secondary species were particularly enhanced in clouds (i.e. cloud processing). The study illustrates that calcium-rich particles assumed to be carbonates (Calcite, Dolomite) contained the secondary species in significantly larger frequency and amount than the silicates (Quartz, Feldspar, Mica, Clay), suggesting that they represent the most reactive fraction of the mineral dust. A surprisingly large fraction of the Ca-rich particles were already found in deliquesced form even in clear-sky condiCorrespondence to: A. Matsuki (matsuki@staff.kanazawa-u.ac.jp) tions, most probably reflecting their extreme hygroscopicity, resulting from their reaction with HNO 3 gas.Both silicate and Ca-rich particles were found dominant among the supermicron cloud residues, and they were supposed to be those previously activated as CCN. It is highly probable that the observed formation of soluble materials enhanced their cloud nucleating abilities.

show abstract

“…In addition, the chemical aging of dust particles (e.g. formation of particulate nitrate and/or sulphate) (Laskin et al, 2005;Matsuki et al, 2005;Mori et al, 2003;Sullivan et al, 2007) can modify their hygroscopicity and ability to serve as cloud condensation nuclei (Krueger et al, 2003;Shi et al, 2008;Sullivan et al, 2009;Tobo et al, 2010). Finally, heterogeneous processing can influence the ice nucleation properties of mineral dust particles (Cziczo et al, 2009;Kanji et al, 2013;Niedermeier et al, 2010;Sullivan et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous reaction of N<sub>2</sub>O<sub>5</sub> with illite and Arizona test dust particles

2014

View full text Add to dashboard Cite

Abstract. The heterogeneous reaction of N 2 O 5 with airborne illite and Arizona test dust (ATD) particles was investigated at room temperature and at different relative humidities using an atmospheric pressure aerosol flow tube. N 2 O 5 at concentrations in the range 8 to 24 × 10 12 molecule cm −3 was monitored using thermal-dissociation cavity ring-down spectroscopy at 662 nm. At zero relative humidity a large uptake coefficient of N 2 O 5 to illite was obtained, γ (N 2 O 5 ) = 0.09, which decreased to 0.04 as relative humidity was increased to 67 %. In contrast, the uptake coefficient derived for ATD is much lower (∼ 0.006) and displays a weaker (if any) dependence on relative humidity (0-67 %). Potential explanations are given for the significant differences between the uptake behaviour for ATD and illite and the results are compared with uptake coefficients for N 2 O 5 on other mineral surfaces.

show abstract

The transformation of solid atmospheric particles into liquid droplets through heterogeneous chemistry: Laboratory insights into the processing of calcium containing mineral dust aerosol in the troposphere

Cited by 142 publications

References 15 publications

Observation of nitrate coatings on atmospheric mineral dust particles

Observation of nitrate coatings on atmospheric mineral dust particles

Cloud processing of mineral dust: direct comparison of cloud residual and clear sky particles during AMMA aircraft campaign in summer 2006

Heterogeneous reaction of N<sub>2</sub>O<sub>5</sub> with illite and Arizona test dust particles

Contact Info

Product

Resources

About

The transformation of solid atmospheric particles into liquid droplets through heterogeneous chemistry: Laboratory insights into the processing of calcium containing mineral dust aerosol in the troposphere

Cited by 142 publications

References 15 publications

Observation of nitrate coatings on atmospheric mineral dust particles

Observation of nitrate coatings on atmospheric mineral dust particles

Cloud processing of mineral dust: direct comparison of cloud residual and clear sky particles during AMMA aircraft campaign in summer 2006

Heterogeneous reaction of N&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt; with illite and Arizona test dust particles

Contact Info

Product

Resources

About

Heterogeneous reaction of N<sub>2</sub>O<sub>5</sub> with illite and Arizona test dust particles