Apparatus for investigating fast chemical reactions by optical detection

摘要

An apparatus for investigating the course of fast chemical reactions in liquid chemical systems, using optical detection and an external perturbation, especially by the temperature-jump method. The optical part of the apparatus comprises first and second light paths conveying a probing light beam and a sense light beam, respectively, and an optical lens system of extremely high aperture for measurements of absorption, fluorescence, and fluorescence polarization. The opto- electronic detection system comprises individual photodetector heads and a signal processing unit wherein special circuits for electronic division, zero- correction, large aperture error correction, and signal coupling eliminate disturbing signal components, reduce inherent errors of electronic signal processing, and simplify operation of the apparatus.