Hadamard-Transform Fluorescence Excitation-Emission-Matrix Spectroscopy: Rapid Multivariate Analysis of Fluorophores

Abstract

A new UV-LED based Hadamard excitation-emission-matrix fluorescence spectrometer was designed and utilized to study the degradation of antioxidants additives to lubricant samples with acquisition times within 2 to 10 seconds.

HPLC-Detector Based on Hadamard-Transform Fluorescence Excitation-Emission-Matrix Spectroscopy

“…Recently, we introduced a much faster EEM spectrometer achieving for the first time an acquisition rate of higher than 30 spectra per minute. − This EEM instrument uses a fully programmable 31-channel light source and a conventional 2048-channel fluorescence photodiode array spectrometer. The programmable light source produces 31 different combinations of 31 wavelength channels based on Hadamard-matrix multiplexing .…”