In situ measurements of ion-exchange processes in single polymer particles: Laser trapping microspectroscopy and confocal fluorescence microspectroscopy

Analytical Chemistry

Volumn 68, Issue 3, 1996, Pages 409-414

  Kim, Haeng Boo ^a   Hayashi, Masahiko ^a   Nakatani, Kiyoharu ^a   Kitamura, Noboru ^a   Sasaki, Keiji ^b   Hotta, Jun Ichi ^b   Masuhara, Hiroshi ^b  

^a HOKKAIDO UNIVERSITY   (Japan)

^b OSAKA UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0001499856     PISSN: 00032700     EISSN: None     Source Type: Journal    
DOI: 10.1021/ac951058c     Document Type: Article

References (30)

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23. In order to minimize scattering and complicated refraction of the probe beam by the small particle, the beam diameter was adjusted to 1 μm as a paraxial ray of the objective. For spherical particles such as polymer beads, microcapsules, and liquid droplets with a diameter lager than 10 μm, we confirmed the linear response of the experimental setup; the absorbance of a solute increased linearly with increase in the solute concentration (fixed particle diameter) as well as in the particle diameter (fixed solute concentration)
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29. 0 for the actual calculation.
30. The Lambert-Beer law is not necessarily warranted for absorption measurements on minute spherical particles under an optical microscope, since lensing effects and/or complicated refraction of an incident light beam may take place to some extent However, since the calculation based on eq 2 reproduces the observed Abs(t) in Figure 5, we suppose the assumption is appropriate at the first approximation.