公开(公告)号：WO1987000272A1

公开(公告)日：1987-01-15

申请号：PCT/DE1986000276

申请日：1986-07-03

Applicant: CAMMANN, Karl

IPC: G01J03/433

CPC classification number: G01J3/433 ,  G01N21/3103 ,  G01N21/6402

Abstract: In order to remedy the compensation problem of the background absorption in absorption spectroscopy or atomic fluorescent spectroscopy, the frequency of a measurement light beam sent through a test chamber is modulated by using the Doppler effect. To this effect, devices arranged on the ray path of the light beam (12) generate a modification ratio of the optical path travelled by the light beam (12) between two points of said ray path. Several construction solutions are possible to obtain this effect. The optical path may be periodically modified by moving mirrors, or it is possible to arrange on the ray path a crystal (132) of which the refraction index may be periodically modified by applying a voltage to magneto resistors (134 and 146).

Abstract translation: 为了补偿吸收光谱或原子荧光光谱学中背景吸收的补偿问题，通过使用多普勒效应来调制通过测试室发送的测量光束的频率。 为此，布置在光束（12）的光线路径上的装置产生由光束（12）在所述光线路径的两个点之间行进的光路的修正率。 几种施工方案可以获得这种效果。 可以通过移动反射镜周期性地修改光路，或者可以通过向磁电阻器（134和146）施加电压来在光线路径上布置可以周期性地修改折射率的晶体（132）。

公开(公告)号：WO1987000273A1

公开(公告)日：1987-01-15

申请号：PCT/EP1986000395

申请日：1986-07-04

Applicant: CAMMANN, Karl

IPC: G01J03/433

CPC classification number: H01J49/02 ,  G01J3/433 ,  G01N21/3103 ,  G01N21/6402

Abstract: The selectivity, that is to say the ratio between the analyte-proportional signal and the foreign body-proportional signal is an essential factor in spectrometric measurements. When a narrow spectral band of the spectral domain is filtered by means of filter arrangements or the like and when supplying a detector of which the output signal is displayed, a sensitive improvement of the selectivity is obtained. The filter arrangement is periodically offset with respect to the spectral domain to be analyzed so that the spectral band passing through the filter arrangement is periodically offset through the spectral domain to be analyzed and the output signal from the detector is displayed through a lock-in amplifier of which the phase reference signal is proportional to the displacement.

Abstract translation: 选择性，也就是说分析物比例信号与异物比例信号之间的比例是光谱测量中的一个重要因素。 当通过滤波器布置等过滤频域的窄谱带时，当提供显示输出信号的检测器时，可以获得敏感的选择性提高。 滤波器布置相对于要分析的频谱域周期性地偏移，使得通过滤波器装置的频谱带周期性地偏移通过待分析的频谱域，并且来自检测器的输出信号通过锁定放大器显示 其相位参考信号与位移成比例。