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  2. Ultraviolet–visible spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet–visible...

    A UV-Vis spectrophotometer is an analytical instrument that measures the amount of ultraviolet (UV) and visible light that is absorbed by a sample. It is a widely used technique in chemistry, biochemistry, and other fields, to identify and quantify compounds in a variety of samples.

  3. Spectrophotometry - Wikipedia

    en.wikipedia.org/wiki/Spectrophotometry

    There are some common types of spectrophotometers include: UV-vis spectrophotometer: Measures light absorption in UV and visible ranges (200-800 nm). Used for quantification of many inorganic and organic compounds. 1. Infrared spectrophotometer: Measures infrared light absorption, allowing identification of chemical bonds and functional groups. 2.

  4. Ultraviolet–visible spectroscopy of stereoisomers - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet–visible...

    Ultraviolet–visible spectroscopy (UVvis) can distinguish between enantiomers by showing a distinct Cotton effect for each isomer. UVvis spectroscopy sees only chromophores, so other molecules must be prepared for analysis by chemical addition of a chromophore such as anthracene.

  5. DU spectrophotometer - Wikipedia

    en.wikipedia.org/wiki/DU_spectrophotometer

    [2]: 151 [34] [35] All modern UVVis spectrophotometer are built on the same basic principles as the DU spectrophotometer. [29] Diagram of Model DU optical system, Beckman manual, 1954 "Light from the tungsten lamp is focused by the condensing mirror and directed in a beam to the diagonal slit entrance mirror.

  6. UV detectors - Wikipedia

    en.wikipedia.org/wiki/UV_detectors

    The vast majority of liquid chromatographic systems are equipped with ultraviolet (UV) absorption detectors. The most common UV-Vis detectors used are variable wavelength detectors (VWD), photo diode array detectors (PDA), and diode array detectors (DAD). [4] Variable wavelength detectors decide in advance which wavelength is needed for the ...

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    Dolph Lundgren is officially cancer-free after undergoing his last procedure.. The Swedish actor, 67, who was diagnosed with kidney cancer in 2015, posted a video on Instagram and gave a health ...

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