Simple component analysis method for metal materials and composition for simple component analysis

摘要

PPROBLEM TO BE SOLVED: To provide a simple procedure for obtaining high precision and an analyzing composition, in a technique of bonding a reagent to the surface of a metallic material, and deciding the material composition from the degree of coloration thereof. PSOLUTION: An acid solution is bonded to the surface of the metal material, and a white color component (acid insoluble white substance) insoluble in the acid solution and a component (developing agent) for coloring specific metal ions are added to the acid solution to form a white sediment lay on the surface of the metal material, to sharpen the coloration of metal ions and the content of a specific component is decided from the degree of coloration of liquid droplets. Nitrate ions are contained in the acid solution and a halide for accelerating the dissolution of a material can be added to, as necessary. A titanium oxide or silicon oxide is suitable as the acid insoluble white substance and, as a color forming agent to Mn ions, an oxidizing agent for changing Mn ions to MnOSB4/SBSP-/SPis preferably used, and especially, a compound containing pentavalent Bi, KBiOSB3/SBor NaBiOSB3/SBis desirable. PCOPYRIGHT: (C)2006,JPO&NCIPI