Sulfate ion content analysis manner and analytical instrument null

摘要

PROBLEM TO BE SOLVED: To provide a method and a device by which the sulfate ion content of a salt product can be analyzed in a short time without requiring pretreatment. ;SOLUTION: Infrared rays are applied to a sample 33 in a sample cup 32 by an infrared spectrophotometer 10, and the diffused reflected light generated from the sample is condensed, and diffusive reflection intensity in a measuring wave number 1110cm^-1 and diffusive reflection intensity in a reference wave number in 1240cm^-1 are measured. An operation means 20 performs an operation on the sulfate ion content C[mg/kg] on the basis of an expression (C=a+bA) expressed by constants (a and b) according to diffusive reflection intensity A[-] of the measuring wave number when the reference wave number is set as a reference and the particle diameter distribution of the sample.;COPYRIGHT: (C)1998,JPO