| 摘要 |
PURPOSE:To automatize the adjustment of the positional relationship between a sample atomizing section and a spectrooptical system by sampling and memorizing the position of the sample atomizing section and the data of photoabsorption and noise moving the sample atomizing section to decide the optimum position. CONSTITUTION:A sample atomizing section is rotated about a vertical shaft to detect the direction so as to maximize the value of absorbance to be set in the direction. Then, a horizontal movement mechanism Dh and a vertical movement mechanism Dv are driven. During the period, the data of the position and the absorbance data as output of an averaging circuit 6 and the data of noise as output of an effective value circuit 8 are sampled and stored into corresponding addresses of respective memories M. Data of the memories M are read out to search data of positions (h) and (v) maximize the S/N ratio, namely, the ratio between the output of the circuit 6 and that of the circuit 8 and the data of the absorbance at the positions are compared with the maximum of the absorbance. When it exceeds 1/K of the maximum, the mechanisms Dh and Dv are driven to set the sample atomizing section F at the positions (h) and (v). This enables the analysis at the optimum position thereby improving the accuracy and efficiency of analysis. |
