By Optical Absorption Spectroscopy?

1 Optical Absorption Spectroscopy Overview. Absorption spectroscopy measures how much light is absorbed by a sample over a range of wavelengths defined by the electromagnetic spectra [17]. The wavelength at which a chemical component absorbs light is a function of the type of ion or molecule that is being monitored.

What is the principle of absorption spectroscopy?

AAS is an analytical technique used to determine how much of certain elements are in a sample. It uses the principle that atoms (and ions) can absorb light at a specific, unique wavelength. When this specific wavelength of light is provided, the energy (light) is absorbed by the atom.

What is absorbance spectroscopy used for?

Absorption spectroscopy works as an analytical chemistry tool that can determine if a particular substance is present in a sample and often also quantify how much of the substance is present. Infrared and ultraviolet-visible spectroscopy is particularly common in these kinds of analytical applications.