| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for removing an influence due to a change in viscosity. SOLUTION: The change amountΔFN of N-times resonance frequencies FNs of a vibrator is the sum of a change componentΔF<SB>1</SB>(viscosity) due to viscosity and a change componentΔF<SB>1</SB>(adsorption) due to adsorption. When the change amountΔFN is found by measuring two or more different N-times resonance frequencies FNs, theΔF<SB>1</SB>(viscosity) is found on the basis ofΔFN=N<SP>1/2</SP>/ΔF<SB>1</SB>(viscosity)+N/ΔF<SB>1</SB>(adsorption). On the basis of a time change in theΔF<SB>1</SB>(viscosity), the concentration or the like of a trace substance stuck to the vibrator is found. COPYRIGHT: (C)2004,JPO
|
