| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a calibration method when measuring bubbles in liquid by using a laser diffraction/scattering type particle size distribution measuring method, and a method for measuring the volume concentration of the bubbles in the liquid by using a calibration result. <P>SOLUTION: A membranous porous molded body 21 having uniform pores is used as a gas liquid dispersion element, and operation for measuring intensity of diffracted/scattered light acquired by irradiating laser light toward monodisperse bubbles generated by supplying gas into the liquid through the membranous porous molded body 21 is performed by changing the gas supply flow rate to the membranous porous molded body 21 in a plurality of times, and a relation between the diffracted/scattered light intensity and the gas supply flow rate acquired by measurement of each time. When measuring unknown bubbles, the intensity of diffracted/scattered light acquired by irradiating the laser light toward the bubbles is measured, and the volume concentration of the bubbles in the liquid is calculated by using the foregoing relation. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
