| 摘要 |
PROBLEM TO BE SOLVED: To calculate an absorbance with high precision at both background correction measurement and non-correction measurement, related to an atomic absorption photometer. SOLUTION: A pulse lighting pattern of light sources (HCL and D2L) and the sampling timing of an optical reception signal are changed depending on whether background correction is performed or not. At background correction measurement, one cycle is divided into three: an HCL lighting period, a D2L lighting period, and a non-lighting period are provided (see (a) and (b)). At background non-correction measurement, one cycle is divided into two: an HCL lighting period, and a non-lighting period are provided (see (c) and (d)). Thus, the HCL lighting period and non-lighting period are longer at non-correction measurement to improve S/N ratio of the optical reception signal.
|
