ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 44 Issue 3 > 2018,44(3):442-448. DOI:10.7519/j.issn.1000-0526.2018.03.011 Prev Next
Preparation of Pure AgI Nano-Aerosol and Its Efficiency of Ice Nucleation in Laboratory Experiment
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Abstract:
The 100 mg pure AgI powder was placed in a vaporization tube of an electrical heating furnace and heated to 1600℃ for gasification. Then, the gaseous AgI was burst into a 2 m3 metal container by high-pressure air, and AgI aerosols were formed after suddenly cooled afterward. AgI aerosols were sampled by natural sedimentation using the formvar stabilized with carbon support films. The results indica-ted that the aerosol composition maintains pure AgI and the size spectrum width is 0.84-34.6 nm with 2.17 nm peaking diameter. The ice nucleation efficiency of the quantitative pure AgI nano-aerosol was detected by a 15 L mixed cloud chamber, with and without fog, respectively. The preliminary results were that the efficiency of ice nucleation is little more than 1.1×1011 g-1 under the condition of -10℃ with cold fog, and 3.4×1010 g-1 without cold fog.
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P48
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