Mole Ratio Dependence of the Mutual Deliquescence Relative Humidity of Aqueous Salts of Atmospheric Importance

2016 ◽  
Vol 120 (20) ◽  
pp. 3596-3601 ◽  
Author(s):  
Bryant N. Fong ◽  
James T. Kennon ◽  
Hashim M. Ali
Keyword(s):  
Relative Humidity ◽  
Ratio Dependence ◽  
Deliquescence Relative Humidity

Deliquescence Relative Humidity Measurements Using an Electrical Conductivity Method

2006 ◽  
Vol 35 (4) ◽  
pp. 583-604 ◽  
Author(s):  
Lietai Yang ◽  
Roberto T. Pabalan ◽  
Miriam R. Juckett
Keyword(s):  
Electrical Conductivity ◽  
Relative Humidity ◽  
Conductivity Method ◽  
Humidity Measurements ◽  
Deliquescence Relative Humidity ◽  
Electrical Conductivity Method

Corrosion Behavior of Carbon Steel and Stainless Steel Materials under Salt Deposits in Simulated Dry Repository Environments

2002 ◽  
Vol 757 ◽  
Author(s):  
Lietai Yang ◽  
Roberto T. Pabalan ◽  
Lauren Browning ◽  
Darrell S. Dunn
Keyword(s):  
Stainless Steel ◽  
Carbon Steel ◽  
Relative Humidity ◽  
Multielectrode Array ◽  
Chloride Salt ◽  
Uniform Corrosion ◽  
Salt Deposit ◽  
Steel Material ◽  
Deliquescence Relative Humidity

ABSTRACTIn-situ coupled multielectrode array sensors were used to measure the non-uniform corrosion of carbon steel and stainless steel materials under KCl salt deposit in simulated dry repository environments. It was found that the initiation of non-uniform corrosion occurs at a relative humidity that is 14% lower than the deliquescence relative humidity of the chloride salt. It was found also that once significant corrosion had occurred, the non-uniform corrosion process for the carbon steel material under the salt deposit continues at relative humidities as low as 27%.

Theoretical Investigation of Substrate Effect on Deliquescence Relative Humidity of NaCl Particles

2007 ◽  
Vol 111 (4) ◽  
pp. 633-639 ◽  
Author(s):  
Yonggang Gao ◽  
Liya E. Yu ◽  
Shing Bor Chen
Keyword(s):  
Relative Humidity ◽  
Theoretical Investigation ◽  
Substrate Effect ◽  
Deliquescence Relative Humidity

scholarly journals Water uptake and hygroscopicity of perchlorates and implications for the existence of liquid water in some hyperarid environments

RSC Advances ◽  
2017 ◽  
Vol 7 (74) ◽  
pp. 46866-46873 ◽  
Author(s):  
Wenjun Gu ◽  
Yongjie Li ◽  
Mingjin Tang ◽  
Xiaohong Jia ◽  
Xiang Ding ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Water Uptake ◽  
Liquid Water ◽  
Deliquescence Relative Humidity

Dependence of deliquescence relative humidity of perchlorates on temperature.

scholarly journals Hygroscopic behavior of atmospherically relevant water-soluble carboxylic salts and their influence on the water uptake of ammonium sulfate

2011 ◽  
Vol 11 (24) ◽  
pp. 12617-12626 ◽  
Author(s):  
Z. J. Wu ◽  
A. Nowak ◽  
L. Poulain ◽  
H. Herrmann ◽  
A. Wiedensohler
Keyword(s):  
Relative Humidity ◽  
Ammonium Sulfate ◽  
Water Uptake ◽  
Ammonium Oxalate ◽  
Water Soluble ◽  
Hygroscopic Growth ◽  
Organic Salts ◽  
Deliquescence Relative Humidity ◽  
Hygroscopic Behavior ◽  
Atmospherically Relevant

Abstract. The hygroscopic behavior of atmospherically relevant water-soluble carboxylic salts and their effects on ammonium sulfate were investigated using a hygroscopicity tandem differential mobility analyzer (H-TDMA). No hygroscopic growth is observed for disodium oxalate, while ammonium oxalate shows slight growth (growth factor = 1.05 at 90%). The growth factors at 90% RH for sodium acetate, disodium malonate, disodium succinate, disodium tartrate, diammonium tartrate, sodium pyruvate, disodium maleate, and humic acid sodium salt are 1.79, 1.78, 1.69, 1.54, 1.29, 1.70, 1.78, and 1.19, respectively. The hygroscopic growth of mixtures of organic salts with ammonium sulfate, which are prepared as surrogates of atmospheric aerosols, was determined. A clear shift in deliquescence relative humidity to lower RH with increasing organic mass fraction was observed for these mixtures. Above 80% RH, the contribution to water uptake by the organic salts was close to that of ammonium sulfate for the majority of investigated compounds. The observed hygroscopic growth of the mixed particles at RH above the deliquescence relative humidity of ammonium sulfate agreed well with that predicted using the Zdanovskii-Stokes-Robinson (ZSR) mixing rule. Mixtures of ammonium sulfate with organic salts are more hygroscopic than mixtures with organic acids, indicating that neutralization by gas-phase ammonia and/or association with cations of dicarbonxylic acids may enhance the hygroscopicity of the atmospheric particles.

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