THE DROP VOLUME METHOD FOR INTERFACIAL-TENSION DETERMINATION - AN ERROR ANALYSIS

Citation
Jc. Earnshaw et al., THE DROP VOLUME METHOD FOR INTERFACIAL-TENSION DETERMINATION - AN ERROR ANALYSIS, Journal of colloid and interface science, 177(1), 1996, pp. 150-155
Citations number
13
Categorie Soggetti
Chemistry Physical
ISSN journal
00219797
Volume
177
Issue
1
Year of publication
1996
Pages
150 - 155
Database
ISI
SICI code
0021-9797(1996)177:1<150:TDVMFI>2.0.ZU;2-8
Abstract
An error analysis of the drop volume method of determination of surfac e or interfacial tension is presented. It is shown that the presence o f the empirical correction term may lead to either a decrease or an in crease in the final uncertainty of the calculated tension. Recommendat ions to maximize the precision of measurement are made. It is further shown that the systematic error due to the correction term is less tha n 0.04%; under the conditions recommended to minimize the statistical uncertainty, the systematic error should be less than half this figure . Tabulations of recommended values of the correction function are giv en. (C) 1996 Academic Press, Inc.