Trace determination of TeO42?, TeO32?, AsO2? and VO3? by differential pulse polarography and resolution of binary and ternary mixtures of selected oxyanions |
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| Authors: | M M Kamal Z A Ahmed and Y M Temerk |
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| Institution: | (1) Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt |
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| Abstract: | Summary A differential pulse polarographic method has been applied to the determination of trace concentrations of TeO
4
2–
, TeO
3
2–
, AsO
2
–
and VO
3
–
. The dependence of the differential pulse peak on various parameters was studied and optimum conditions for the analytical determination of these oxyanions were found. Limits of detection and quantitation have been calculated for the differential pulse polarographic determination of the investigated oxyanions. The selectivity of this technique for the determination of binary (TeO
4
2–
-TeO
3
2–
, TeO
4
2–
-AsO
2
–
and TeO
4
2–
-VO
3
–
) mixtures and a ternary (TeO
4
2–
-TeO
3
2–
-AsO
2
–
) mixture has also been reported.
Spurenbestimmung von TeO
4
2–
, TeO
3
2–
, AsO
2
–
und VO
3
–
durch Differential-Puls-Polarographie und Trennung binÄrer sowie ternÄrer Gemische von ausgewÄhlten Oxyanionen |
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| Keywords: | |
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