کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1255361 | 971420 | 2012 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Analyzing the response of a contactless conductivity detector in capillary electrophoresis by a resonant method
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Analyzing the response of a contactless conductivity detector in capillary electrophoresis by a resonant method Analyzing the response of a contactless conductivity detector in capillary electrophoresis by a resonant method](/preview/png/1255361.png)
چکیده انگلیسی
We report a resonant method to measure the wall capacitance (Cw) and solution resistance (RS) in a capacitively coupled contactless conductivity detector (C4D). Under the typical operating conditions in capillary electrophoresis (I.D. 50 μm, O.D. 360 μm, electrode length of 4 mm, electrode gap of 1 mm, frequency of 200 kHz), the values of Cw measured in 1 and 20 mmol/L NaCl solutions are 2.8 and 32 fF, which are only 1.1% and 12% of prediction by the equation in references, respectively. The value of RS is less than the prediction in solutions with κ < 0.02 S/m. The response current of C4D is due to the change in Cw because the total impedance of a C4D is composed mainly by the impedance from Cw.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Chemical Letters - Volume 23, Issue 7, July 2012, Pages 831–834
Journal: Chinese Chemical Letters - Volume 23, Issue 7, July 2012, Pages 831–834
نویسندگان
Qi Kang, Qing Zhang, Yao Long Li, Dong Dong Li, Da Zhong Shen,