کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10561585 | 969779 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Anion recognition through novel C-thiophenecalix[4]resorcinarene: PVC based sensor for chromate ions
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Anion recognition through novel C-thiophenecalix[4]resorcinarene: PVC based sensor for chromate ions Anion recognition through novel C-thiophenecalix[4]resorcinarene: PVC based sensor for chromate ions](/preview/png/10561585.png)
چکیده انگلیسی
Novel ionophore, C-thiophenecalix[4]resorcinarene (I) has been synthesized and characterized by IR, NMR and C, H, N analysis. Poly(vinyl chloride) (PVC) based membranes of ionophore (I) using dibutylphthalate (DBP), dioctylphthalate (DOP), 1-chloronapthalene (CN), tris(2-ethylhexyl) phosphate (TEHP) and bis(2-ethylhexyl)sebacate (DOS) as plasticizing solvent mediators were prepared and used as CrO42â selective sensors. Of the various sensors prepared, the one with membrane composition 2:66:120 mg (I: PVC: DBP) exhibited the best performance. This sensor works well over a wide concentration range 5.6 à 10â6-1.0 à 10â1 M (detection limit â¼ 0.30 ppm) with Nernstian compliance (29.0 mV per decade) between pH 6.5-10.0 with a fast response time of â¼13 s. The selectivity coefficient values as determined by fixed interference method (FIM) indicate excellent selectivity for CrO42â ions over a large number of anions. The sensor exhibits adequate shelf-life ( â¼5 months) with good reproducibility (S.D. ± 0.2 mV). The sensor has been used in the potentiometric titration of chromate with Pb(II). Determination of chromium in electroplating waste using the sensor was successfully achieved.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 65, Issue 3, 15 February 2005, Pages 716-721
Journal: Talanta - Volume 65, Issue 3, 15 February 2005, Pages 716-721
نویسندگان
A.K. Jain, V.K. Gupta, L.P. Singh, P. Srivastava, J.R. Raisoni,