What is the source of light in UV?
The source of light in the UV spectrophotometer commonly used is the Deuterium lamp.
What is light source of spectrometer?
Many spectrophotometers switch between a halogen lamp for the visible range and a deuterium lamp for the ultraviolet range according to the wavelength setting.
Why do we use deuterium lamps in UV spectroscopy?
Deuterium lamps are an ideal light source for HPLC as they can emit a continuous stream of light in the UV region, with wavelengths ranging from 190 – 370 nm. This wavelength range makes Deuterium lamps ideal for high precision absorption measurements, which makes them perfect for HPLC analyses.
Is mercury lamp a line source?
In medium-pressure mercury-vapor lamps, the lines from 200 to 600 nm are present. The lamps can be constructed to emit primarily in the UV-A (around 400 nm) or UV-C (around 250 nm)….Emission line spectrum.
| Wavelength (nm) | Name (see photoresist) | Color |
|---|---|---|
| 404.7 | H-line | violet |
| 435.8 | G-line | blue |
| 546.1 | green | |
| 578.2 | yellow-orange |
What are the major sources of light?
A few examples of natural light sources include the Sun, stars and candles. A few examples of artificial light sources include light bulbs, lamp posts and televisions.
Do UV lamps contain mercury?
Conventional UV lamps hold their mercury either in a liquid form (more common in medium pressure lamps) or an amalgam (more common in low pressure, high output lamps). Amalgam UV lamps contain solid “spots” which consist of an alloy of mercury and another element, such as indium or gallium.
What UV-Vis light sources are available for spectroscopy applications?
StellarNet has a variety of UV-VIS light sources available for spectroscopy applications. The SL5-DH UV-VIS Light Source is a miniature Deuterium and tungsten halogen light source that covers the 190-2500nm range. The lamp combines the Deuterium Spectrum with the Tungsten Halogen spectrum to form a single optical path.
What type of light source is used for UV light measurement?
For instruments employing two lamps, a tungsten or halogen lamp is commonly used for visible light,2 whilst a deuterium lamp is the common source of UV light.2 As two different light sources are needed to scan both the UV and visible wavelengths, the light source in the instrument must switch during measurement.
What are the sources of UV light?
Light Sources SL1 VIS Tungsten Halogen Lamp SL1-LED Source SL2 Mercury Argon Emission SL3 High Power UV Dueterium Source SL4 UV-VIS High Power UV-VIS Source SL5 UV+VIS Deuterium/Halogen Raman Lasers NIST Traceable Sources
What is UV Vis spectroscopy?
What is UV VIS Spectroscopy? Ultraviolet-visible spectroscopy or ultraviolet-visible spectrophotometry (UV-Vis or UV/Vis) refers to absorption spectroscopy or reflectance spectroscopy in the ultraviolet-visible spectral region.