NDLI: The use of a cupric ion-selective electrode as end-point detector in precipitation titration of oxalate

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The use of a cupric ion-selective electrode as end-point detector in precipitation titration of oxalate

Content Provider	Semantic Scholar
Author	Taddia, Marco
Copyright Year	1979
Abstract	ZusammenfassungEs wird gezeigt, daß Oxalat bei pH 6–8 mit Blei(II)-Lösung in Gegenwart von Kupferionen titriert werden kann, wobei eine Kupfer-ionenselektive Elektrode zur Endpunktsindikation dient. Das Verfahren wurde im Bereich 0,8–40 mM Oxalat getestet und die Anzeigeempfindlichkeit untersucht. Die Wiederfmdensrate ist besser als 98%; die relative Standardabweichung beträgt 0,4% bei 4 mM Oxalat. Durch Einstellung des pH-Wertes auf 6,0±0,2 können Störungen durch Carbonat, Phosphat und Arsenat z.T. eliminiert werden.SummaryIt is demonstrated that oxalate can be titrated at pH 6–8 by employing lead(II) as titrant and a cupric ISE as end-point detector in the presence of traces of cupric ions. The response of the ISE to oxalate and E/pH plots have been examined. The method has been tested for the range of 0.8–40 mM oxalate. Recovery was found generally to be better than 98% and relative standard deviation was 0.4% at the 4 mM level. Interferences from carbonate, phosphate and arsenate can in part be overcome by adjusting the pH to 6.0±0.2.
Starting Page	149
Ending Page	151
Page Count	3
File Format	PDF HTM / HTML
DOI	10.1007/BF00495179
Volume Number	296
Alternate Webpage(s)	https://page-one.springer.com/pdf/preview/10.1007/BF00495179
Alternate Webpage(s)	https://doi.org/10.1007/BF00495179
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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