JPS6454335A - Concentration signal detector for flameless atomic absorption photometry - Google Patents

Abstract

PURPOSE:To obtain a peak signal with high accuracy by detecting the difference between the average value and peak of levels in the specified time before and after the peak generation. CONSTITUTION:The operation of a memory circuit 1 is started by an atomization start signal to store the signal from a detector B into the circuit 1. The memory operation is stopped by an atomization stop signal. A reading out circuit 2 reads out the signal stored in the circuit 1 and detects the peak value P0 and the point of the time when the peak is generated. The circuit also detects the value P1 in the specified time before the point of the time when the peak is generated and the value P2 in the specified period after the generation of the peak. The average value P3 of these two values P1, P2 is determined in an average value computing circuit 3. The average value P3 and the peak value P0 are inputted to a subtraction circuit 4 and the difference P0-P3 thereof is computed. The value P0-P3 is the value proportional to the concn. of a sample. The concns. of the elements contained in the samples are known by adding the correction values previously determined with every sample to this value.