Temperature-Dependent Deliquescence Relative Humidities and Water Activities Using Humidity Controlled Thermogravimetric Analysis with Application to Malonic Acid

Beyer, Keith D.; Schroeder, J.; Kissinger, Jared A.

doi:10.1021/jp412446h

Cited by 10 publications

(28 citation statements)

References 42 publications

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“…For example, water uptake by CaCO 3 and Arizona test dust was measured at room temperature using a Mettler-Toledo TGA with an accuracy of 1 µg in mass measurement (Gustafsson et al, 2005), and about four monolayers of adsorbed water were formed at 80 % RH for both mineral dust samples. A similar instrument was utilized to determine the DRH of dicarboxylic acids and their sodium salts at different temperatures (Beyer et al, 2014;Schroeder and Beyer, 2016), and the DRH was found to decrease with temperature for malonic acid, from 80.2 % at 277 K to 69.5 % at 303 K (Beyer et al, 2014). This method was also used to probe water adsorption by different soot particles (Popovitcheva et al, 2001(Popovitcheva et al, , 2008a, although no details of the instrument used were provided.…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

A review of experimental techniques for aerosol hygroscopicity studies

Tang

Chan

et al. 2019

Atmos. Chem. Phys.

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Abstract. Hygroscopicity is one of the most important physicochemical properties of aerosol particles and also plays indispensable roles in many other scientific and technical fields. A myriad of experimental techniques, which differ in principles, configurations and cost, are available for investigating aerosol hygroscopicity under subsaturated conditions (i.e., relative humidity below 100 %). A comprehensive review of these techniques is provided in this paper, in which experimental techniques are broadly classified into four categories, according to the way samples under investigation are prepared. For each technique, we describe its operation principle and typical configuration, use representative examples reported in previous work to illustrate how this technique can help better understand aerosol hygroscopicity, and discuss its advantages and disadvantages. In addition, future directions are outlined and discussed for further technical improvement and instrumental development.

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Section: Thermogravimetric Analysismentioning

confidence: 99%

A review of experimental techniques for aerosol hygroscopicity studies

Tang

Chan

et al. 2019

Atmos. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…For example, water uptake by CaCO3 and Arizona test dust was measured at room temperature using a Mettler-Toledo TGA with an accuracy of 1 μg in mass measurement (Gustafsson et al, 2005), and about 4 monolayers of adsorbed water were formed at 80% RH for both mineral dust samples. A similar instrument was utilized to determine the DRH of dicarboxylic acids and their sodium salts at different temperatures (Beyer et al, 2014;Schroeder and Beyer, 2016), and the DRH was found to decrease with temperature for malonic acid, from 80.2% at 277 K to 69.5% at 303 K (Beyer et al, 2014). This method was also used to probe water adsorption by different soot particles (Popovitcheva et al, 2001;Popovicheva et al, 2008a;Popovicheva et al, 2008b), although no details of the instrument used were provided.…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

“…The terminology "TDMA" was first introduced in 1986 in a study (Rader and McMurry, 1986) which showed that size change as small as 1% could be readily measured. In addition to size change due to humidification (humidity-TDMA), TDMAs can also be used to measure particle size change due to other processing such as heating (Bilde et al, 2015a). H-TDMA is probably the most widely used technique for aerosol hygroscopicity measurement in both laboratory (Gibson et al, 2006;Herich et al, 2009;Koehler et al, 2009;Wex et al, 2009a;Good et al, 2010b;Wu et al, 2011;Hu et al, 2014;Lei et al, 2014;Gomez-Hernandez et al, 2016;Jing et al, 2016;Zieger et al, 2017) and field studies (McMurry and Stolzenburg, 1989;Swietlicki et al, 2008;Ye et al, 2011;Ye et al, 2013;Wang et al, 2014b;Yeung et al, 2014b;Atkinson et al, 2015;Cheung et al, 2015;Wu et al, 2016;Sorooshian et al, 2017).…”

Section: Humiditymentioning

confidence: 99%

A review of experimental techniques for aerosol hygroscopicity studies

Tang¹,

Chan²,

Li³

et al. 2019

Preprint

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<p><strong>Abstract.</strong> Hygroscopicity is one of the most important physicochemical properties of aerosol particles, and also plays indispensable roles in many other scientific and technical fields. A myriad of experimental techniques, which differ in principles, configurations and cost, are available for investigating aerosol hygroscopicity under subsaturated conditions (i.e., relative humidity below 100&#8201;%). A comprehensive review of these techniques is provided in this paper, in which experimental techniques are broadly classified into four categories, according to the way samples under investigation are prepared. For each technique, we describe its operation principle and typical configuration, use representative examples reported in previous work to illustrate how this technique can help better understand aerosol hygroscopicity, and discuss its advantages and disadvantages. In addition, future directions are outlined and discussed for further technical improvement and instrumental development.</p>

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“…In addition, the effect of buoyancy, which varies with RH (Beyer et al, 2014;Schroeder and Beyer, 2016), is also automatically taken into account by using an empty pan as the reference. Semispherical quartz crucibles with a volume of 180 µL, provided by the manufacturer, are used in this work as sample pans.…”

Section: Humidity Chambermentioning

confidence: 99%

“…We note that two groups have used similar techniques to measure water adsorption by CaCO 3 and Arizona test dust (Gustafsson et al, 2005) and DRH of malonic acid, sodium oxalate, and sodium malonate (Beyer et al, 2014;Schroeder and Beyer, 2016). Nevertheless, the performance of this technique has never been systematically evaluated.…”

mentioning

confidence: 99%

Investigation of water adsorption and hygroscopicity of atmospherically relevant particles using a commercial vapor sorption analyzer

Zhu

et al. 2017

Atmos. Meas. Tech.

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Abstract. Water adsorption and hygroscopicity are among the most important physicochemical properties of aerosol particles, largely determining their impacts on atmospheric chemistry, radiative forcing, and climate. Measurements of water adsorption and hygroscopicity of nonspherical particles under subsaturated conditions are nontrivial because many widely used techniques require the assumption of particle sphericity. In this work we describe a method to directly quantify water adsorption and mass hygroscopic growth of atmospheric particles for temperature in the range of 5-30 • C, using a commercial vapor sorption analyzer. A detailed description of instrumental configuration and experimental procedures, including relative humidity (RH) calibration, is provided first. It is then demonstrated that for (NH 4 ) 2 SO 4 and NaCl, deliquescence relative humidities and mass hygroscopic growth factors measured using this method show good agreements with experimental and/or theoretical data from literature. To illustrate its ability to measure water uptake by particles with low hygroscopicity, we used this instrument to investigate water adsorption by CaSO 4 · 2H 2 O as a function of RH at 25 • C. The mass hygroscopic growth factor of CaSO 4 · 2H 2 O at 95 % RH, relative to that under dry conditions (RH < 1 %), was determined to be (0.450 ± 0.004) % (1σ ). In addition, it is shown that this instrument can reliably measure a relative mass change of 0.025 %. Overall, we have demonstrated that this commercial instrument provides a simple, sensitive, and robust method to investigate water adsorption and hygroscopicity of atmospheric particles.

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Temperature-Dependent Deliquescence Relative Humidities and Water Activities Using Humidity Controlled Thermogravimetric Analysis with Application to Malonic Acid

Cited by 10 publications

References 42 publications

A review of experimental techniques for aerosol hygroscopicity studies

A review of experimental techniques for aerosol hygroscopicity studies

A review of experimental techniques for aerosol hygroscopicity studies

Investigation of water adsorption and hygroscopicity of atmospherically relevant particles using a commercial vapor sorption analyzer

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