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    • 25. 发明专利
    • PREPARATION OF ANALYTICAL SAMPLE SOLUTION FOR MULTIELEMENT INSTANTANEOUS QUANTITATIVE ANALYSIS
    • JPS5850446A
    • 1983-03-24
    • JP14811681
    • 1981-09-19
    • NIPPON STEEL CORP
    • UZUKI YOSHIO
    • G01N1/28B01D3/00B01F1/00G01N1/44G01N33/20
    • PURPOSE:To attain the constant concentration of an analytical sample solution at all times by a method wherein an analytical sample and a melting agent are heated to be molten together and then cooled to be solidified in a melting crucible, the melting crucible in this state is housed in an acid dissolving tank, and the sample is further heated and sissolved while cooling and returning evaporated moisture. CONSTITUTION:An analytical sample and a melting agent are put in a melting crucible, heated to be molten, and then cooled to be solidified. The crucible A1 in this state is placed on a fixing jig K with the open side of the former located in the same direction as that of an acid dissolving tank H2. As acid solution is poured into the crucible from an acid addition tube M1 to fill up it. The crucible is heated by a heater H4 while blowing gas thereinto from a fluid blowing tube N1 and bubbling with the gas jetted from a nozzle N2, thereby to dissolve the anylytical sample rapidly. Evaporated moisture within the acid dissolving tank H2 is introduced from a cooling water pouring outlet H5 to a back flow cooling tube H6 immersed in cooling water put within a back flow cooling apparatus section H1, so as to be condensed and returned back to the acid dissolving tank H2. With this, it becomes possible to complete the acid dissolution while holding an amount of the added acid solution unchanged and to attain the uniform analytical sample solution of the constant concentration at all times.