Methods and systems for computing a particle size distribution of small particles in a process
US7719682B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2008 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | May 6, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods, systems and computer readable media for computing small particle size distributions of particles in a process stream comprising a sample dilute colloid. A reference matrix of pre-computed reference vectors is provided. Each reference vector represents a discrete particle size or particle size range of a particle size distribution of particles contained in a dilute colloid. Each reference vector represents a reference extinction spectrum over a predetermined wavelength range. A measurement vector representing a measured extinction spectrum of the sample particles in the sample colloid is provided, wherein the measured extinction spectrum has been spectrophotometrically measured over the wavelength range. The particle size distribution and particle concentrations of the particles in the sample colloid are determined using the reference matrix, the measurement vector and linear equations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.