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    • 2. 发明申请
    • METHOD FOR DETERMINING DISSOLVED OXYGEN IN WATER
    • 用于测定水中溶解氧的方法
    • WO1996036866A1
    • 1996-11-21
    • PCT/US1995006017
    • 1995-05-15
    • AQUARIUM PHARMACEUTICALS, INC.
    • AQUARIUM PHARMACEUTICALS, INC.ELSON, JesseYOSHPA, Michael
    • G01N21/00
    • G01N31/225G01N21/78G01N33/1806Y10S436/904Y10T436/209163
    • The invention relates to a method for determining the concentration of dissolved oxygen in a liquid water sample comprising the steps: (a) providing a liquid water sample of predetermined volume, the oxygen content of which is to be determined; (b) mixing additives with the liquid water sample to form a mixture, the additives comprising an oxidizable metal salt comprising a metal cation and an anion selected from an inorganic anion or an organic anion which, with the cation, results in a water soluble oxidizable metal salt, at least one water soluble alkali metal compound selected from an alkali metal oxide, or an alkali metal hydroxide or a salt of an alkali metal and a weak acid; and at least one oxidation-reduction indicator capable of a color change upon oxidation of the oxidizable metal salt during contact with dissolved oxygen in the liquid sample to a color indicative of the concentration of dissolved oxygen in the liquid sample; (c) preventing any substantial contact of the mixture with atmospheric oxygen; and (d) determining the concentration of dissolved oxygen in the liquid sample by comparing the color of the mixture to a predetermined color indicative of the concentration of dissolved oxygen in the water sample.
    • 本发明涉及一种用于确定液体水样品中溶解氧浓度的方法,包括以下步骤:(a)提供待测量的含氧量的预定体积的液态水样品; (b)将添加剂与液态水样品混合以形成混合物,所述添加剂包含可氧化金属盐,其包含金属阳离子和选自无机阴离子或有机阴离子的阴离子,其与阳离子导致水溶性可氧化 金属盐,至少一种选自碱金属氧化物或碱金属氢氧化物或碱金属和弱酸的盐的水溶性碱金属化合物; 以及至少一种氧化还原指示剂,其能够在与所述液体样品中的溶解氧接触期间氧化可氧化金属盐的颜色变化为指示液体样品中溶解氧浓度的颜色; (c)防止混合物与大气氧的任何实质接触; 和(d)通过将混合物的颜色与表示水样品中的溶解氧浓度的预定颜色进行比较来确定液体样品中溶解氧的浓度。