Colorimetric measuring method for zinc
    8.
    发明公开
    Colorimetric measuring method for zinc 失效
    Verfahren zur kolorimetrischen Messung von Zink。

    公开(公告)号:EP0147660A2

    公开(公告)日:1985-07-10

    申请号:EP84114486.8

    申请日:1984-11-29

    IPC分类号: G01N33/84 G01N31/22

    CPC分类号: G01N33/84 G01N31/22

    摘要: Disclosed herein is a high sensitivity method of colorimetrically measuring zinc by using a 2-pyridylazoaminophenol derivative represented by the following general formula (I) or a salt thereof as a coloring reagent, wherein a masking agent excellent in stability and acting specifically upon specific metals is used. As the masking agent is used a surface active agent.
    wherein X and Y represent a halogen atom or a hydrogen atom, R 1 represents a hydrogen atom or a lower alkyl group, and R 2 and R 3 represent a hydrogen atom, a lower alkyl group, -(CH 2 ) n SO 3 H in which n is an integer of 1-4, or
    in which ℓ is an integer of 0-4 and m is an integer of 0-4. The masking agent may be surface active agent in combination , with dimethylglyoxime in case of masking nickel and/or cobalt.

    摘要翻译: 本发明公开了通过使用由下列通式(I)表示的2-吡啶基氨基苯酚衍生物或其盐作为着色剂对锌进行比色测定的高灵敏度方法,其中稳定性优异且特异性对特定金属起作用的掩蔽剂为 用过的。 当掩蔽剂用于表面活性剂时。 其中X和Y表示卤素原子或氢原子。 R 1表示氢原子或低级烷基,R 2和R 3表示氢原子,低级烷基, - (CH 2)n SO 3 H,其中n为1-4的整数, 或 - (CH2)l - @ - (CH2)mSO3H,其中l为0-4的整数,m为0-4的整数。 在掩蔽镍和/或钴的情况下,掩蔽剂可以是与二甲基乙二肟组合的表面活性剂。