Abstract
This chapter presents some specific applications of wavelet transform (WT) in analytical chemistry. It focuses on three major areas in analytical chemistry that include spectroscopy, chromatography, and electrochemical studies. The spectroscopic techniques, ultraviolet-visible (UV-VIS) spectroscopy, infrared (IR) spectroscopy, mass spectrometry (MS), nuclear magnetic resonance (NMR) spectroscopy, and photoacoustic (PA) spectroscopy, are widely used in analytical chemistry for both qualitative and quantitative analysis. In spectroscopic measurement, the raw spectral data X are a combination of the true readings and noise in the discrete format. To extract the true readings from the raw data, a digital processing method such as filtering is commonly employed. In addition, infrared spectroscopy plays an important role in the identification and characterization of chemicals and is used widely in modern laboratories. The chapter describes applications of wavelet transform in ultraviolet visible spectroscopy. Ultraviolet-visible spectroscopy is another technique that is used extensively in analytical chemistry for characterization, identification, and quantitative analysis.
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