کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1429894 | 987189 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optical sensor based on 1,3-di(2-methoxyphenyl)triazene for monitoring trace amounts of mercury(II) in water samples
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
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چکیده انگلیسی
A new optical sensor for highly sensitive and selective determination of mercury(II) ion in aqueous solutions is developed. The mercury sensing membrane was prepared by incorporating 1,3-di(2-methoxyphenyl)triazene (MPT) as chromoionophore in the plasticized PVC membrane containing tris(2-ethylhexyl)phosphate (TEHP) as plasticizer. The proposed sensor displays a wide linear range of 9.0Â ÃÂ 10â10-2.5Â ÃÂ 10â7 M with a low detection limit of 2.0Â ÃÂ 10â10 M in aqueous solutions at pH 4.0. This sensor has a relatively fast response time of less than 5 min. In addition to high stability and reproducibility, it shows a unique selectivity towards Hg2+ ion with respect to common coexisting cations. The sensor can readily be regenerated by exposure to a solution of sodium iodide (0.01 M). The proposed optode was applied to the determination of Hg2+ in water samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 30, Issue 6, 20 July 2010, Pages 847-852
Journal: Materials Science and Engineering: C - Volume 30, Issue 6, 20 July 2010, Pages 847-852
نویسندگان
Mohammad Bagher Gholivand, Moslem Mohammadi, Mohammad Kazem Rofouei,