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    • 4. 发明申请
    • ANALYSIS METHOD FOR ORGANIC SUBSTANCES IN SOLUTION TO BE EXAMINED
    • 有待检验的有机物质分析方法
    • US20160116446A1
    • 2016-04-28
    • US14787209
    • 2014-04-23
    • SUMITOMO ELECTRIC INDUSTRIES, LTD.
    • Takayasu SUGIHARAYukiharu KAWAHARAOsamu Ohama
    • G01N30/06G01N1/10
    • G01N30/06G01N1/10G01N1/405G01N2030/009G01N2030/027G01N2030/085
    • An analysis method is provided, by which it is determined whether or not a solution to be-examined contains an organic substance in an amount on the order of 20 mass ppb or less. The analysis method for organic substances in a solution to be examined includes the following steps: a sampling step in which 500 ml or less of a sample solution is taken front a solution to be examined; an adsorption step in which the sample solution is passed through activated carbon 8 so that the organic substance is adsorbed on the activated carbon; an extraction step in which the organic substance is extracted into a hydrophobic solvent; a specimen preparation step in which, a specimen solution is prepared by using the hydrophobic solvent into which the organic substance has been extracted; and an analysis step in which an analysis is performed to determine whether or not the organic substance in an amount of 20 mass ppb or less is contained in the solution to be examined. The activated carbon 8 has a specific surface area of 800 m2/g or more, and the amount of the activated carbon 8 is 0.025 g/ml or more relative to the amount of the sample solution. In the adsorption step, the sample solution is passed at a rate of 7.5 ml/min or less on the discharge side of the activated carbon 8.
    • 提供了一种分析方法,通过该方法确定被检查溶液是否含有量为20质量ppmb以下的有机物质。 待检测溶液中有机物质的分析方法包括以下步骤:在待检溶液前面取500ml或更少的样品溶液的取样步骤; 吸附步骤,其中样品溶液通过活性炭8使得有机物质被吸附在活性炭上; 将有机物质萃取到疏水性溶剂中的萃取工序; 试样制备步骤,其中通过使用已经提取有机物质的疏水性溶剂制备样品溶液; 以及分析步骤,其中执行分析以确定待检查溶液中是否含有20质量ppm以下的有机物质。 活性炭8的比表面积为800m 2 / g以上,活性炭8相对于样品溶液的量为0.025g / ml以上。 在吸附工序中,在活性炭8的排出侧以7.5ml /分钟以下的速度通过样品溶液。