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Experimental study of precipitating systems; computerised analysis of the optical transmittance and associated noise.

Authors
Type
Published Article
Journal
Computers & chemistry
Publication Date
Volume
25
Issue
5
Pages
447–457
Identifiers
PMID: 11513235
Source
Medline
License
Unknown

Abstract

The change of the transmittance in a precipitant system has been measured by using a focused laser beam into a precipitation cell in which the precipitate was generated by an injection technique. We have monitored the evolution of the transmittance on several precipitation processes with different chemicals (PbI2, PbSO4, BaSO4 and BaC2O4) and quantities of precipitated mass (20.0, 17.5, 15.0, 12.5 and 10.0 mg). The noise associated to the transmittance signal has been obtained by a numerical procedure based on computer analysis, finding that it provides information about particle shape features and nucleation kinetics.

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