Thi Anh Huong Nguyen, Thi Ngoc Mai Pham, Thi Tuoi Doan, Thi Thao Ta, Jorge Sáiz, Thi Quynh Hoa Nguyen, Peter C Hauser, Thanh Duc Mai
An inexpensive, robust and easy to use portable capillary electrophoresis instrument with miniaturized high-voltage capacitively coupled contactless conductivity detection was developed. The system utilizes pneumatic operation to manipulate the solutions for all flushing steps. The different operations, i.e. capillary flushing, interface rinsing, and electrophoretic separation, are easily activated by turning an electronic switch. To allow the analysis of samples with limited available volume, and to render the construction less complicated compared to a computer-controlled counterpart, sample injection is carried out hydrodynamically directly from the sample vial into the capillary by manual syphoning...
September 19, 2014: Journal of Chromatography. A