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Application of a dioxime-PVC electrode to potentiometric studies of Cr(III) ion | ||
| Journal of Physical & Theoretical Chemistry | ||
| مقاله 1، دوره 3، شماره 3، بهمن 2006، صفحه 1-6 اصل مقاله (136.14 K) | ||
| نوع مقاله: Research Paper | ||
| نویسندگان | ||
| H. Aghaie* ؛ M. H. Felcri* ؛ M. Arvand* ؛ K. Zare* ؛ M. Aghaie* | ||
| Not-mentioned | ||
| چکیده | ||
| A PVC membrane Cr(III) ion selective electrode has been constructed using 2H-1,4-benzothioazine- 2,3(4H)dione dioxime (BTD) as membrane carrier. The influence of membrane composition on the electrode response was studied. The electrode exhibits a Nernstian response over a Cr(III) concentration range of 1.0 x 10 6 to 1.0>< 10-1 M (r = 0.99) with a slope of 19.5 ± 0.5 mV per decade of concentration, and a detection limit of 8.9 x le M. The selectivity coefficient values as determined by separate solution method (SSM) indicate excellent selectivity for Cr(III) ion over a large number of other ions. Applications of the proposed electrode to the determination of Cr(III) in real samples and as an indicator for potentiometric titration of Cr(III) ion with EDTA, are reported. | ||
| کلیدواژهها | ||
| Ion selective electrode؛ PVC membrane؛ Cr(III) determination؛ a-dioxime | ||
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آمار تعداد مشاهده مقاله: 672 تعداد دریافت فایل اصل مقاله: 329 |
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