METHOD OF ANALYZING ALUMINUM PLATING LIQUID AND METHOD OF PRODUCING ALUMINUM PLATED PRODUCT

PROBLEM TO BE SOLVED: To provide a method of analyzing an Al plating liquid capable of a quantitative analysis of the concentration of AlClwith high accuracy although an Al plating liquid containing an ion liquid has high corrosiveness.SOLUTION: A method of analyzing an aluminum plating liquid comprises measuring Raman intensities of plurality of reference ion liquids of different mixing ratios of aluminum chloride and an alkylimidazolium chloride to create a calibration curve from reference standard values related to AlClstandardized with intensities of standard peaks appearing in specified wave numbers and theoretical concentration values of AlCl, quantifying concentrations of AlClin an aluminum plating liquid from analytical standard values related to AlClobtained by measuring and standardizing similarly Raman intensities of the aluminum plating liquid, on the basis of the calibration curve, and calculating the content ratio of aluminum chloride in the aluminum plating liquid.