کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1243033 | 1495852 | 2010 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nitrite sensor based on multilayer film of Dawson-type tungstophosphate α-K7[H4PW18O62]·18H2O immobilized on glassy carbon
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
A nitrite sensor based on immobilized Dawson-type tungstophosphate α-K7[H4PW18O62]·18H2O (PW18) in multilayers of charged polyelectrolyte poly(allylamine hydrochloride) (PAH) on a glassy carbon electrode is described. A nitrite sensor manufactured with 10 layers has a sensitivity of ∼4 nA/μM nitrite, fast response time (<6 s), low detection limit (∼0.1 μM), high selectivity towards endogenous interferences such as nitrate and molecular oxygen, a linear range from 0.1 μM to at least 20 mM nitrite and was stable for at least 2 months. In addition, such nitrite sensors can operate in a pH range from 1 to 9, and the sensitivity can be increased by increasing the number of layers at the expense of increasing the response time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 80, Issue 5, 15 March 2010, Pages 2132–2140
Journal: Talanta - Volume 80, Issue 5, 15 March 2010, Pages 2132–2140
نویسندگان
Malika Ammam, Bineta Keita, Louis Nadjo, Jan Fransaer,