Interactions of aerosols (ammonium sulfate, ammonium nitrate and ammonium chloride) and of gases (HCl, HNO3) with fogwater

Ruprecht, H.; Sigg, Laura

doi:10.1016/0960-1686(90)90012-c

Cited by 25 publications

(13 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The SOA produced under dry conditions is best described as a viscous, amorphous semi-solid with reported viscosities ranging from 10 4 -10 9 Pa s that can undergo moistureinduced phase transitions, given sufficiently high RH, resulting in significant viscosity changes (Zhang et al, 2015b;Grayson et al, 2016;Petters et al, 2019;Shiraiwa et al, 2011). Ammonium sulfate and sucrose have been heavily studied and are often used as surrogates for inorganic and organic aerosol components, respectively, and are both also found in the atmosphere as well (ammonium sulfate more ubiquitously than sucrose) (Ruprecht and Sigg, 1990;Theodosi et al, 2018;Froyd et al, 2019;Ott et al, 2020). Given sufficiently high RH, both engage in water uptake to undergo deliquescence (formation of an aqueous solution) (Mauer and Taylor, 2010).…”

Section: Resultsmentioning

confidence: 99%

Utilizing an Electrical Low Pressure Impactor to Indirectly Probe Water Uptake via Particle Bounce Measurements

Fischer

Petrucci

2021

Preprint

View full text Add to dashboard Cite

Abstract. Secondary organic aerosol (SOA), formed through oxidation of volatile organic compounds (VOCs), display complex viscosity and phase behaviors influenced by temperature, relative humidity (RH), and chemical composition. Here, the efficacy of a multi-stage electrical low pressure impactor (ELPI) for indirect water uptake measurements was studied for ammonium sulfate (AS) aerosol, sucrose aerosol, and α-pinene derived SOA. All three aerosol systems were subjected to greater than 90 % chamber relative humidity, with subsequent analysis indicating persistence of particle bounce for sucrose 10 aerosol of 70 nm (initial dry diameter) and α-pinene derived SOA of number geometric mean diameters between 39 nm and 136 nm (initial dry diameter). On the other hand, sucrose aerosol of 190 nm (initial dry diameter) and AS aerosol down to 70 nm (initial dry diameter) exhibited no particle bounce at elevated RH. Partial drying of aerosol within the lower diameter ELPI impaction stages, where inherent and significant RH reductions occur, is proposed as one explanation for particle bounce persistence.

show abstract

Section: Resultsmentioning

confidence: 99%

Utilizing an Electrical Low Pressure Impactor to Indirectly Probe Water Uptake via Particle Bounce Measurements

Fischer

Petrucci

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…This dependence is not as clearcut for c1-, the deposition rate of which is systematically higher than that of Na+. The excess of c1over Na+ indicates an additional input of c1-, such as HCl gas and NH 4 Cl aerosols Sigg et al, 1987;Ruprecht and Sigg, 1990). HCl(g) is emitted from a near-by refuse incineration plant (3.5 km WNW) .…”

Section: Sources For Chloridementioning

confidence: 99%

Dry deposition measurements using water as a receptor: A chemical approach

Zobrist

Wersin

Jaques

et al. 1993

Water Air Soil Pollut

Self Cite

View full text Add to dashboard Cite

The field measurement of dry deposition still represents a difficult task. In our approach, a I to 2 cm thick layer of water in a petri dish with a diameter of 22 cm, serves as a surrogate surface. The atmospheric constituents taken up by the water can be analyzed chemically by the same procedure as for the wet deposition samples. In contrast to solid surrogate surfaces, water exhibits the following advantageous properties: low and constant surface resistance, high sticking coefficient for aerosols, and predictable sorption behavior for gases. Consequently, the deposition rates measured to the wet surface are generally higher, by up to a factor of 4 for NH 4 •,CJ-, NO,and S0,2-, than those to a dry surface, but still smaller than the concurrent wet deposition rates. We observed the following average dry deposition rates in µmo! m-2 ct-•: NH 4 • 48.3, Ca2+ 40.7, Na• 15.8, Mg 2 • 8.4, K• 4.2, H-Aci 36.4; S0,2-57.2, CJ-39.2, NO,-34.5, HSO,-5.7, formate 4.0; acid soluble metals: Fe 2.8, Zn 0.60, Cu 0.11, Pb 0.073, Cd 0.0022. The soluble fraction of Zn, Cd, Cu, Pb and Fe in the dry deposition varied with the pH of the water phase corresponding to the adsorption tendency of these metals to oxide surfaces. The sampling method also allows tracing of regionally and locally emitted atmospheric pollutants. In our study the local pollution sources included road salting, construction work and a refuse incinerator. Finally, chemical reactions occurring in the atmosphere, such as the conversion of c1to HCI by HN0 3 or the oxidation of SO,, can be identified by evaluating the data. The method proposed is relevant to measure reproducibly the dry deposition of a variety of compounds to water bodies and moist vegetation.

show abstract

“…Few observations of nitrite in fog-and cloudwater (Okita, 1968;Ruprecht and Sigg, 1990;Cape et al, 1992;Fuzzi et al, 1992) and in ambient particulate matter (Lammel and Pemer, 1988;Allegrini et al, 1994) of anthropogenically influenced air masses have been reported.…”

Section: Introductionmentioning

confidence: 99%

On the occurrence of nitrite in urban fogwater

Lammel

Metzig

1998

Chemosphere

View full text Add to dashboard Cite

Nitrite was observed in fogwater samples 3 -52 pmol L', in a polluted source region in Germany. The fogwater contained high concentrations of various pollutants but only little or no acidity. The concentrations of oxidizable S(IV) were in the range 6 -290 pmol L-'.A two-phase chemical box model is used to interprete the chemistry. Fogwater N(II1) is found to be sensitive to gas-phase HNO, and also to HCHO (which were both not measured). From the distribution of S(IV) between oxidizable and non-oxidizable species (the latter is suspected to be dominated by the complex formed from S(IV) and dissolved HCHO), it is infered that HCHO most likely was low. The reaction between dissolved NO, and S(IV) was an important N(II1) source and could even explain the observed fogwater nitrite concentrations, if no gas-phase HNO, was fed into the fog. The comparison between observed and model predicted suggests that interphase mass transfer of NO, is characterized by a low mass accommodation coefficient.

show abstract

Interactions of aerosols (ammonium sulfate, ammonium nitrate and ammonium chloride) and of gases (HCl, HNO3) with fogwater

Cited by 25 publications

References 23 publications

Utilizing an Electrical Low Pressure Impactor to Indirectly Probe Water Uptake via Particle Bounce Measurements

Utilizing an Electrical Low Pressure Impactor to Indirectly Probe Water Uptake via Particle Bounce Measurements

Dry deposition measurements using water as a receptor: A chemical approach

On the occurrence of nitrite in urban fogwater

Contact Info

Product

Resources

About