کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1246463 | 969756 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study on pressurizing electroosmosis pump for chromatographic separation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A porous core electroosmosis pump was studied and improved in accordance with the electroosmosis theory. Hexamethylene tetraamine (HMTA) was used as the additive of pump carrier solution to improve the flow rate stability and delivery efficiency. The influences of the electric field strength, porous core dimension and acetonitrile concentration of carrier solution on the pump flow rate and output pressure were investigated in detail. The improved electroosmosis pump can provide not only steady flow rate and large flow range, but also moderate output pressure. With the pump carrier solution of 0.5 mmol/L HMTA and the working voltage of 4950 V, the pump output pressure, flow rate and delivery efficiency achieved 1.1 MPa, 1.3 mL/min and 3.2 mL/(min mA), respectively. The pump can be employed for mobile phase delivery in the reversed-phase chromatographic separation of monolithic silica columns.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 70, Issue 2, 15 September 2006, Pages 358-363
Journal: Talanta - Volume 70, Issue 2, 15 September 2006, Pages 358-363
نویسندگان
Lei Wang, You-Zhao He, Guo-Ni Fu, Yan-Yun Hu, Xiao-Kui Wang,