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    • 8. 发明专利
    • Asbestos judgment method
    • JP5323433B2
    • 2013-10-23
    • JP2008245540
    • 2008-09-25
    • 中部電力株式会社株式会社ユニケミー
    • 博之 伊藤光男 濱地佐野  守
    • G01N21/77G01N31/00G01N31/22
    • PROBLEM TO BE SOLVED: To provide a simple asbestos determining method for matching even to above 0.1% of a sample in an asbestos determining method causing no false determination of asbestos content even in a case that rock wool is contained in a building material or warm material. SOLUTION: The asbestos determining method is constituted of a pretreatment step (1) for filtering and separating the slurry raw solution subjected to first eluting operation performed by dripping a pretreatment solution (aqueous solution of formic acid or the like) on a ground sample to leave the same to stand by a membranous filter medium, a determining sample preparing step (2) for preparing a determining sample through second eluting operation performed by dripping a dissolving solution (strong acid aqueous solution of hydrochloric acid or the like) on the filter residue on the membranous filter medium, and a coloration determining step (3) for adding a coloration reaction reagent (color forming solution) of Mg or Fe being a coloration determining reagent of asbestos to the determining sample to determine the presence of asbestos by coloration. COPYRIGHT: (C)2010,JPO&INPIT