Patent ID: 6683685
Filing Date: 2004-01-27
Classification: G01J,G01N

Abstract:
An atomic absorption photometer, comprising:a light source formed of a first light source for emitting a bright line spectrum light and a second light source for emitting a continuous spectrum light, an atomization section for allowing a light emitted from the light source to pass therethrough to measure a material thereat, a first photodetector for receiving the light passing through the atomization section, said first photodetector measuring an intensity of the light to issue a signal thereof so that an absorbance at the atomization section is calculated, and measurement controlling means for controlling the light source and the first photodetector, said controlling means, in case a background correction is carried out, dividing a predetermined measurement period into three periods formed of a first measurement period measured by a light emitted from the first light source, a second measurement period measured by a light emitted from the second light source, and a third measurement period measured in a condition that no lights from the first and second light sources are emitted on the photodetector, said measurement controlling means distributing the second measurement period to at least one of the first measurement period and the third measurement period in case the background correction is not carried out.