Application of Frequency Domain Photon Migration to Particle Size Analysis and Monitoring of Pharmaceutical Powders

The frequency domain photon migration (FDPM) technique was employed to determine mean particle size of pharmaceutical powders. Results show that the FDPM-measured scattering coefficient increases linearly with reciprocal mean particle size of powdered samples. In contrast to near-infrared spectrosco...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 2003-04, Vol.75 (7), p.1720-1725
Main Authors: Sun, Zhigang, Torrance, Sharnay, McNeil-Watson, Fraser K, Sevick-Muraca, Eva M
Format: Article
Language:English
Subjects:
Analysis
Analytical chemistry
Atoms & subatomic particles
Biological and medical sciences
Chemistry
Chemistry, Pharmaceutical
Exact sciences and technology
General pharmacology
Lactose - analysis
Lactose - chemistry
Medical sciences
Particle Size
Pharmaceuticals
Pharmacology. Drug treatments
Photons
Powders - analysis
Powders - chemistry
Quality Control
Spectrometric and optical methods
Spectrophotometry, Infrared
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Summary:The frequency domain photon migration (FDPM) technique was employed to determine mean particle size of pharmaceutical powders. Results show that the FDPM-measured scattering coefficient increases linearly with reciprocal mean particle size of powdered samples. In contrast to near-infrared spectroscopy techniques, FDPM technique enables determination of scattering and absorption separately so that it does not require data pretreatment and chemometric calibration models. In addition, this unique advantage provides more detailed information about powder samples, which can be used as a potential tool for on-line monitoring of not only variation of active pharmaceutical ingredient concentrations from changes in the absorption coefficient but also variation of particle sizes from changes in the scattering coefficient.
ISSN:0003-2700
1520-6882
DOI:10.1021/ac0261597