G - Physics – 01 – J
Patent
G - Physics
01
J
73/54
G01J 3/42 (2006.01) G01N 21/31 (2006.01)
Patent
CA 1195857
ABSTRACT The invention relates to apparatus for utilizing the Zeeman (or Stark) effect for achieving background correction in an atomic absorption spectrophotometer using; an electro- magnetic optical effect for background correction and an electromagnetic field producing device for producing the ef- fect having a pair of input terminals, the invention com- prises connecting the electromagnetic field producing device to a source of substantially single frequency alternating current and a unidirectional conducting device connected in circuit with the electromagnetic field producing device to produce a substantially unidirectional field. The invention provides several times greater insensitivity to background absorption than heretofore attained and enables the correction system to take the form of an accessory applicable to an ex- isting atomic absorption spectrophotometer.
392016
Barnard Thomas W.
Bohler Walter
Osler Hoskin & Harcourt Llp
Perkin-Elmer Corporation The
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