کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9681071 | 1455510 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Highly thiocyanate-selective membrane electrodes based on the N,Nâ²-bis-(benzaldehyde)-glycine copper(II) complex as a neutral carrier
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Some novel PVC membrane electrodes based on N,Nâ²-bis-(benzaldehyde)-glycine metallic complexes of Cu(II), Ni(II), Zn(II) and Co(II) as neutral carriers are described. The results showed that the electrode based on the N,Nâ²-bis-(benzaldehyde)-glycine copper(II) complex [Cu(II)-BBAG] had a near-Nernstian response to the thiocyanate ion ranging from 1.0Ã10â1 to 9.0Ã10â7 M in a phosphate buffer solution of pH 4.0 with a detection limit of 7.0Ã10â7 M and a slope of â57.6 mV/decade at 25°C. The electrode displays an anti-Hofmeister selectivity sequence in the following order: SCNâ>ClOâ4>Salâ>Iâ>Brâ>NOâ2>NOâ3>SO2â3>SO2â4>Clâ>H2PO The response mechanism is discussed in view of both AC impedance and UV spectroscopy techniques. The [Cu(II)-BBAG]-based electrode was successfully applied to the determination of the thiocyanate ion in wastewater and human saliva.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 180, Issues 1â3, 15 August 2005, Pages 207-215
Journal: Desalination - Volume 180, Issues 1â3, 15 August 2005, Pages 207-215
نویسندگان
Ya-Qing Chai, Jian-Yuan Dai, Ruo Yuan, Xia Zhong, Yan Liu, Dian-Ping Tang,