کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1244288 | 969684 | 2008 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
PVC membrane electrode for the potentiometric determination of Ipratropium bromide using batch and flow injection techniques
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
Ipratropium (IP+) ion-selective electrode (ISE) has been constructed from poly(vinyl chloride) matrix membrane containing Ipratropium-tetraphenylborate (IP-TPB) as the electroactive component using 2-nitrophenyloctylether as plasticizer. The electrode exhibits near Nernstian response to Ipratropium bromide (IPBr) over the concentration range 10â5 to 10â2 mol Lâ1 and detection limit 5.1 Ã 10â6 mol Lâ1. The electrode offers significant advantages including long lifetime (>2 months), excellent stability and reproducibility, fast response time (<10 s), wide pH working range (pH 2-9), high thermal stability (isothermal coefficient 0.37 mV/°C) and superior selectivity for IPBr over a large number of inorganic and organic substances. The electrode was successfully used as indicator electrode in the potentiometric titration of IPBr versus sodium tetraphenylborate (NaTPB) and in the determination of IPBr in Atrovent® vials and spiked urine samples applying batch and flow injection techniques, with satisfactory results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 75, Issue 5, 15 June 2008, Pages 1175-1183
Journal: Talanta - Volume 75, Issue 5, 15 June 2008, Pages 1175-1183
نویسندگان
M.E.M. Hassouna, S.A.A. Elsuccary,