Abstract
AbstractA method of UV absorbance detection for use in capillaries using axial as opposed to transcolumn illumination is described in which laser‐induced fluorescence acts as a tool for determining, indirectly, the absorbance within a given length of the capillary. The length of the optical path can be chosen arbitrarily, regardless of the capillary diameter. The technique is demonstrated by means of capillary zone electrophoresis (CZE), in which path lengths of up to a few millimeters can be tolerated without serious loss of separation efficiency. Results for 50‐μm‐diameter capillaries show that optical densities consistent with an optical path of 3 mm can be obtained. This leads to a considerable increase in absorbance signal, compared with the usual transcolumn UV absorption technique. It is concluded that further exploitation of the technique requires the use of a more stable light source.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.