Pulsed voltage induced injection for capillary liquid chromatography

✍ Scribed by Shinya Kitagawa; Takao Tsuda

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 131 KB
• Volume: 12
• Category: Article
• ISSN: 1040-7685
• DOI: 10.1002/(sici)1520-667x(2000)12:5<285::aid-mcs2>3.0.co;2-s

✦ Synopsis

A new injection method for capillary liquid chromatography named Ž . ''pulsed voltage induced injection PVII '' is proposed. In this injection method, effluent is used as a sample solution. The PVII is based on the variation of the capacity factor induced by an application of voltage. The application of pulsed voltage along a column generates a specific zone around the column inlet where the matrix of solution differs from the sample solution. The basic behavior of the pulsed voltage induced injection has been studied by using a cation exchange Ž . column inner diameter 150 m, packed length 13.6 mm and the sample solution of 5 mM CuCl aqueous solution containing NaCl and KCl. Peak heights of Na q 2 and K q increased with the increment of the magnitude of the applied voltage. A linear correlation between the concentration of K q in the sample solution and the peak height of K q was obtained by using an internal standard method.