METAL DETECTING REAGENTS AND METHODS OF MONITORING CLEANING SOLUTIONS USING THE SAME

摘要

A metal detecting reagent and a method for monitoring a cleaning liquid using the same are provided to detect metal ions easily even at a low concentration by forming a complex compound easily because of a superior reactivity about the metal ions. A reagent including an ammonium salt and a chelate agent for detecting a metal is prepared(S10). A mixed solution is manufactured by adding the reagent for detecting a metal to a cleaning liquid(S20). A metal ion is detected by measuring an absorbance of the mixed solution(S30), using maximum absorbance in the wavelength range of 560 nm to 650 nm.