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    • 2. 发明专利
    • TREATMENT OF END PART OF CAPILLARY COLUMN
    • JPS61201632A
    • 1986-09-06
    • JP4300985
    • 1985-03-05
    • FUJIKURA LTD
    • KOJIMA MORIAKITANAKA KATSUMARO
    • G01N30/60B01D15/08C03B33/00C03B33/06
    • PURPOSE:To enable the column joining without giving the adverse effect to the separation performance or the like by removing the coated material of an end part of a capillary column with an acid and the electrolytic etching, mechanically or thermally and thereafter giving a cutting flaw to an exposed part to cut it. CONSTITUTION:A coated material 4 such as metal of a capillary column 1 is removed by such a means that an end part 2 to be cut of the capillary column 1 performed with the coated material 4 is immersed in an etching soln. 3 such as hydrochloric acid. A cutting flaw 5 is given on an exposed part 1a of the column removed from the coated material 4 by means of a carbide cutter or the like and the part is cut with the stress break by giving the external force F e.g. the bending stress due to the curvature of 50-100 times of an outside diameter of the column. Still more as the removal of the coated material, a proper means such as an acid or the electrolytic etching, a mechanical means or the heating is used in accordance with the material (e.g. a resin such as silicon and polyimide, metal or the like).
    • 4. 发明专利
    • PRODUCER FOR SAMPLE GAS FOR ATOMIC ABSORPTION ANALYSIS
    • JPS5513840A
    • 1980-01-31
    • JP8589278
    • 1978-07-14
    • FUJIKURA LTD
    • TANAKA KATSUMAROSAITOU KAORUKOJIMA MORIAKI
    • G01N21/31G01N31/00
    • PURPOSE:To make it possible to collect continuously sample gas by using an airtight reactor which has a sample liquid injection intake and sodium boron hydride solution injection intake and is equipped with a carrier gas lead-in pipe and generated gas lead-out pipe at its top and with an exhaust mouth at its bottom. CONSTITUTION:The hydrogen arsenide generator, for example, for atomic absorption analysis consists mainly of reaction bottle 1 and reduced sample injection intake 2 and sample intake 3 are provided on its flank. Into the bottle, solution 4 of sodium boron hydride is previously injected from injection intake 2. An acidic arsenic solution is injected from injection intake 3 and hydrogen arsenide is produced through the reducing reaction. The produced gas supplied to the atomizing part of the atomic absorption analyzer from lead-out pipe 6 by carrier gas supplied from carrier gas pipe 5. After the measurement of one sample ends, water is flowed from branch pipe 7 of carrier gas pipe 5 to wash the inside of the bottle and the reaction solution is exhausted out from exhaust mouth 8 at the bottom repeat the above-mentioned processes.
    • 10. 发明专利
    • QUANTITATIVE MEASURING METHOD FOR PLATING COMPOSITION
    • JPH0943232A
    • 1997-02-14
    • JP20999095
    • 1995-07-26
    • FUJIKURA LTD
    • TANAKA KATSUMAROMAEDA TAKASHI
    • G01N31/00G01N33/20
    • PROBLEM TO BE SOLVED: To easily measure the components of plating composition from coating with an aluminum-zinc alloy by dissolving a plating layer with acid, neutralizing it with alkali and making the aluminum in the plating layer to the deposit of aluminum hydroxide. SOLUTION: Plating layer component is ground from a plated matter 1 and the sampled flake of specimen 2 of ca. 100mg is put in a test tube 3. Two ml of HCl 7 at 20% concentration, for example is added to this and submerged in hot water of approximately 60 deg.C. To the specimen 2 dissolved by heating, 10ml water is added to dilute the concentration of the HCl 7 and 15ml NH4 OH 15 at 28% concentration is added to obtain a mixture 16 of diluted chloric acid and ammonia water. After submerging and heating the test tube in hot water of 90 to 95 deg.C, it is left in the air to settle the deposit of aluminum hydroxide 17. The amount of the settled deposit 17 is compared with the amount of 10 kinds of standard deposit sample group. Thus, from the amount of the deposit 17 judged by sight and the amount of the specimen 2, the concentration of aluminum component in the aluminum-zinc allay can be obtained.