In absorption spectroscopy, precision is limited by indeterminate errors—primarily instrumental noise—which are introduced when we measure absorbance. Precision generally is worse for low absorbances ...In absorption spectroscopy, precision is limited by indeterminate errors—primarily instrumental noise—which are introduced when we measure absorbance. Precision generally is worse for low absorbances and for high absorbances . We might expect, therefore, that precision will vary with transmittance.
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 ...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.
The application of X-rays to the analysis of materials can take forms other than X-ray fluorescence. In this section we briefly consider X-ray absorption and X-ray diffraction.
