| 摘要 |
PROBLEM TO BE SOLVED: To provide an analyzing method capable of analyzing an azolake pigment by liquid chromatography by applying specific pretreatment to the azolake pigment. SOLUTION: The analyzing method of the azolake pigment is constituted so as to separate an ammonium salt solution of the azolake pigment, which is prepared by dissolving the azolake pigment in an organic solvent as an ammonium salt, or a DMSO solution of the azolake pigment, which is prepared by dissolving the azolake pigment in an acidic DMSO solution, by liquid chromatography to detect the azolake pigment. COPYRIGHT: (C)2008,JPO&INPIT
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