کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1210544 | 965377 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-efficiency liquid chromatography on conventional columns and instrumentation by using temperature as a variable
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
High plate numbers were obtained in conventional LC by coupling columns and by using temperature to reduce the viscosity of the mobile phase. At 80 °C up to eight columns of 25 cm Ã 4.6 mm I.D. packed with 5 μm ODS particles could be coupled generating 180,000 effective plates while the pressure drop was only 350 bar. For routine work, a set of four columns is preferred. The analysis times on one column operated at 30 °C and 1 mL/min flow rate and on four columns at 80 °C and 2 mL/min flow rate are the same in isoeluotropic conditions while the resolution is doubled. Multicolumn systems were successfully applied in isocratic and gradient mode for the analysis of pharmaceutical and environmental samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1109, Issue 2, 24 March 2006, Pages 191-196
Journal: Journal of Chromatography A - Volume 1109, Issue 2, 24 March 2006, Pages 191-196
نویسندگان
François Lestremau, Andrew Cooper, Roman Szucs, Frank David, Pat Sandra,