LOW-POWER MINIATURE LED-BASED UV ABSORPTION DETECTOR WITH LOW DETECTION LIMITS FOR CAPILLARY LIQUID CHROMATOGRAPHY

摘要

A system and method for performing UV LED-based absorption detection for capillary liquid chromatography for detecting and quantifying compounds in a liquid, wherein a simplified system eliminates the need for a beam splitter and a reference cell by using a stable UV source, and power requirements are reduced, resulting in a portable and substantially smaller system with relatively low detection limits.

主权项

1. An ultra-violet (UV) light emitting diode (LED) based absorption detection system for capillary liquid chromatography, said system comprising:
an LED for generating a UV light; a first lens for receiving and focusing the UV light from the LED; a band-pass filter for filtering the UV light from the first lens; a second lens for receiving and focusing the UV light from the band-pass filter; at least one slit for passing the UV light received from the second lens; a capillary column for receiving the UV light passed through the at least one slit; and a detector for receiving the UV light that has passed through the capillary column.