Detection and quantification of insoluble particles by ultrasound spectroscopy.
The Ultrafood system, a custom-built diagnostic ultrasound device, is used to accurately measure the concentration of particulate matter in a fluctuating high temperature liquid system. The two main problems, of thermal expansion and thermal variation in ultrasonic outputs were tackled by multi-distance measurement and low frequency spectroscopy, respectively. The resulting techniques have application at laboratory, scale for investigation of particulate suspensions and for online process monitoring.
Goodenough
T I J
TI
Nestlé Research Centre, Vers-chez-le-Blanc, Lausanne CH-1000, Switzerland. timothy.goodenough@rdls.nestle.com
Rajendram
V S
VS
Meyer
S
S
Prêtre
D
D
D005504:Food Analysis; D012995:Solubility; D013057:Spectrum Analysis / Q000295:instrumentation / Q000379:methods*; D014465:Ultrasonics