Absorption spectroscopy

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Absorption spectroscopy

Absorption spectroscopy is a molecular spectroscopy method that uses the wavelength dependent absorption characteristics of materials to identify and quantify specific substances. The absorbance of a solution increases as the attenuation of the optical beam increases.

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.

Especially for UV-VIS spectroscopy, it is common to use the Beer-Lambert Law to calculate the concentration of a particular molecule from the measured absorbance.

There are many different approaches for measuring absorption spectra. The most common one is to point a generated beam of light at a sample and detect the intensity of the radiation that goes through it. The energy that is then transmitted is used to calculate the absorption.

You can find more details about our spectrometer platforms below. We also offer extensive integration and support services as well as an OEM project model for customers that want us to develop a spectrometer variant.

Absorbance

Products for absorption spectroscopy:

Ibsen Photonics offers a number of OEM spectrometer modules with the following distinct benefits for absorbance or absorption spectroscopy:

  • Large absorbance range due to low stray light level

  • Low noise due to NMOS/InGaAs detector technology

  • Fast scans due to high throughput transmission gratings

  • Robustness for portability and field usage

  • Low temperature dependence

NIR spectroscopy

HPLC

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