TERMIUM Plus®

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UV PHOTOMETER [3 records]

Record 1 2012-01-17

English

Subject field(s)
  • Analytical Chemistry
  • Phraseology
PHR

Monochromatic UV photometer.

French

Domaine(s)
  • Chimie analytique
  • Phraséologie

Spanish

Save record 1

Record 2 1996-04-04

English

Subject field(s)
  • Analytical Chemistry
CONT

... monochromatic UV photometer available from Du Pont; similar designs are widely used in modern LC. UV radiation at 254 nm from a low-pressure mercury lamp shines on the entrance of a flow cell and is transmitted through this sample cell and strikes the analytical prototube. Radiation from the source also is directed through a neutral-density filter, and then to the reference photocell. Current from these photocells is fed to log amplifiers, which generate an output linear with solute concentration. The output signal to the recorder normally is attenuated with a simple bridge network.

French

Domaine(s)
  • Chimie analytique

Spanish

Save record 2

Record 3 1996-04-04

English

Subject field(s)
  • Analytical Chemistry
CONT

Multiple-wavelength UV photometers often use a source (e.g. a medium-pressure mercury lamp) that has several of these relatively intense lines, with appropriate filters for selecting the desired wavelength.

French

Domaine(s)
  • Chimie analytique

Spanish

Save record 3

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