Abstract
A liquid-membrane type diethyldithiocarbamate ion-selective electrode (DDC-ISE) was constructed by utilizing the nitrobenzene extract of the methyltrioctylammonium-DDC ion-pair. The DDC-ISE shows Nernstian response in the concentration range of 10−5–10−1 M DDC in 0.1 M sodium hydroxide solution. The electrode potential is constant in the pH range of 7.6–13.0. Potentiometric titrations of Hg(II), Cu(II), Ni(II) and Zn(II) in ammoniacal solutions with NaDDC and successive titration of two binary systems, Hg(II)-Ni(II) and Hg(II)-Zn(II), were successfully carried out with this electrode.
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