| Journal: | Quimica nova |
| Database: | PERIÓDICA |
| System number: | 000313229 |
| ISSN: | 0100-4042 |
| Authors: | Silva, Jose Alberto Fracassi da1 Frasatto, Leonardo |
| Institutions: | 1Universidade Estadual de Campinas, Instituto de Quimica, Campinas, Sao Paulo. Brasil |
| Year: | 2006 |
| Season: | Nov |
| Volumen: | 29 |
| Number: | 6 |
| Pages: | 1377-1380 |
| Country: | Brasil |
| Language: | Portugués |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | This article describes the use of a conventional CRT monitor as a high voltage power supply for capillary electrophoresis. With this monitor, a 23-kV high voltage with a ripple of 1.32% was observed. The reproducibility of the applied high voltage was evaluated by measuring the standard deviations of peak area and migration time for five consecutive injections of a test mixture containing potassium, sodium, and lithium cations at 50 mmol L-1. The errors were about 2.5% and 0.6% for peak area and migration time, respectively. The maximum current tested was about 180 mA, which covers most capillary electrophoresis applications. This system has been successfully used for several months, maintaining the desired level of performance |
| Disciplines: | Química |
| Keyword: | Química analítica, Electroforesis capilar, Suministro de energía, Alto voltaje, Instrumentación analítica |
| Keyword: | Chemistry, Analytical chemistry, Capillary electrophoresis, Power supply, High voltage, Analytical instrumentation |
| Full text: | Texto completo (Ver HTML) |
