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- https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Analytical_Chemistry/2%3A_Analytical_Chemistry_2.0_(Harvey)/11%3A_Spectroscopic_Methods/11.04%3A_Atomic_Absorption_SpectroscopyModern atomic absorption spectroscopy has its beginnings in 1955 as a result of the independent work of A. C. Walsh and C. T. J. Alkemade. Commercial instruments were in place by the early 1960s, and ...Modern atomic absorption spectroscopy has its beginnings in 1955 as a result of the independent work of A. C. Walsh and C. T. J. Alkemade. Commercial instruments were in place by the early 1960s, and the importance of atomic absorption as an analytical technique was soon evident. Atomic absorption spectrophotometers use the same optics described earlier for molecular absorption spectrophotometers, but with an important additional component—we must covert the analyte into free atoms.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Instrumental_Analysis_(LibreTexts)/13%3A_Introduction_to_Ultraviolet_Visible_Absorption_Spectrometry
- https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Analytical_Chemistry/2%3A_Analytical_Chemistry_2.0_(Harvey)/11%3A_Spectroscopic_Methods/11.02%3A_Spectroscopy_Based_on_AbsorptionIn absorption spectroscopy a beam of electromagnetic radiation passes through a sample. Much of the radiation passes through the sample without a loss in intensity. At selected wavelengths, however, t...In absorption spectroscopy a beam of electromagnetic radiation passes through a sample. Much of the radiation passes through the sample without a loss in intensity. At selected wavelengths, however, the radiation’s intensity is attenuated. This process of attenuation is called absorption.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Instrumental_Analysis_(LibreTexts)/15%3A_Molecular_Luminescence
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/10%3A_Spectroscopic_Methods/10.01%3A_Overview_of_SpectroscopyThis chapter explores the interaction of electromagnetic radiation with matter, particularly in the context of spectroscopy. It covers the principles of spectroscopy using ultraviolet, visible, and in...This chapter explores the interaction of electromagnetic radiation with matter, particularly in the context of spectroscopy. It covers the principles of spectroscopy using ultraviolet, visible, and infrared radiation. The chapter explains the wave and particle nature of electromagnetic radiation, highlighting its fundamental properties and explaining how matter absorbs or emits photons.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/10%3A_Spectroscopic_Methods/10.02%3A_Spectroscopy_Based_on_AbsorptionThe page explains the principles and applications of absorption spectroscopy. It describes how electromagnetic radiation passes through a sample, and selective absorption at certain wavelengths leads ...The page explains the principles and applications of absorption spectroscopy. It describes how electromagnetic radiation passes through a sample, and selective absorption at certain wavelengths leads to attenuation, essential for identifying various molecular and atomic transitions. The page covers the requirements for an analyte's absorption, mechanisms involved, differences in infrared and UV/Vis spectra, and factors influencing spectral characteristics.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/03%3A__The_Vocabulary_of_Analytical_Chemistry/3.02%3A_Techniques_Methods_Procedures_and_ProtocolsThis page discusses the process of developing an analytical method to determine lead concentration in drinking water by considering four levels of analytical methodology: techniques, methods, procedur...This page discusses the process of developing an analytical method to determine lead concentration in drinking water by considering four levels of analytical methodology: techniques, methods, procedures, and protocols. Techniques involve chemical or physical principles like those used in graphite furnace atomic absorption spectroscopy (GFAAS). A method applies these techniques to specific analytes in specific matrices, while procedures offer written directions for method application.
