Langmuir 1995,11, 2848
2848
Brownian Motion at Liquid-Gas Interfaces. 4. Experiments with Glass Microspheres in the Presence of Surfactants K. Starchev, M. Avramov, and B. Radoev" Langmuir
1995,11,1731-1734. An error in the publication process caused light gray lines in Figures 1,3and 4 to be lost. The correct figures are presented below.
LA950444M
Dp
0.5
0
IP d 4 0.4
03
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0.8
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5' [ poi' 1 Figure 3. Results D, vs r,-l for a Brownian particle in the volume used for accuracy test of the proposed experimental equipment. The slope of this line 0.18 f 0.04 (u3 s-l) (at confidencelimit 0.9) is very close to the theoretical value ( k ~ T l 6~47)= 0.21 @m3s-l).
& Figure 1. Explanation of the image recognition procedure. A simple amplitude filter based on the dispersionof the signal is used to eliminate the electronic noise. The nonfiltered amplitudes are considered as a scattered light spot of the tracked particleand a weighted mean is used to evaluate its coordinates.
8 0.a
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0 0
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x10
Ma
Figure4. Dpvs Ma (-surface activityE)for particles floating at the liquid gas interface. Linear regression: intercept 0.30 f0.05 @m2s-l) slope (1.22x (u2s-l dyn-l) (i.e., the slope confidenceinterval includesthe zero). The numbers at the top of the different series correspond to the numbers in Table 1.
0743-7463/95/2411-2848$09.00/0
0 1995 American Chemical Society
