Drop size measurement of liquid aerosols

B. Y.H. Liu, D. Y.H. Pui, Wang Xian-Qing

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


The factor B = D/D′ relating the diameter D of a spherical liquid drop to the diameter, D∼, of the same drop collected on a microscope slide has been measured for DOP (di-octyl phthalate) and oleic acid aerosols. The microscope slide was coated with a fluorocarbon, oleophobic surfactant (L-1428, 3M Co., St. Paul, MN). The ratio was found to be independent of drop diameter in the 2-50 μm range and the mean value of B was found to be 0.700 for oleic acid and 0.690 for DOP. Similar measurements for oleic acid and DOP drops collected on a clean, uncoated slide resulted in the values of 0.419 and 0.303, respectively. The experimental values of B were compared with the theoretical values based on contact angle measurements. Good agreement was obtained.

Original languageEnglish (US)
Pages (from-to)563-567
Number of pages5
JournalAtmospheric Environment (1967)
Issue number3
StatePublished - 1982


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