کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1245714 | 969730 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Flow and batch systems for copper(II) potentiometric sensing
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Flow and batch systems for copper(II) potentiometric sensing Flow and batch systems for copper(II) potentiometric sensing](/preview/png/1245714.png)
چکیده انگلیسی
A new carbon paste electrode modified with tetramethyl thiuram disulfide is prepared to use as copper potentiometric sensor in batch and flow analysis. The influence of pH and carbon paste composition on the potentiometric response is studied. The principal parameters of the flow system are optimized and the detection limits and the selectivity coefficients of the potentiometric sensor are calculated for static and flow mode. In both cases, the sensor shows high selectivity to copper ions but in flow analysis this selectivity is higher. The obtained detection limits are 4.6Â ÃÂ 10â8Â M for batch measurements and 2.0Â ÃÂ 10â7Â M for on-line analysis. The potentiometric sensor is applied to copper(II) determination in real samples in static and flow measurements. In both analysis modes, successful results are obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 74, Issue 2, 30 November 2007, Pages 190-197
Journal: Talanta - Volume 74, Issue 2, 30 November 2007, Pages 190-197
نویسندگان
Ma Jesús Gismera, Ma Teresa Sevilla, Jesús R. Procopio,