An atomic fluorescence sampling needle cleaning device

Abstract

The invention provides a washing device for an atomic fluorescence sampling needle, which belongs to the technical field of sampling needle washing devices, and solves the problems that a carrying flow is directly sucked after a sample is sucked by the sampling needle to cause the pollution to the carrying flow, so that the accuracy of an experiment result is influenced and the testing precision is low. According to the washing device for the atomic fluorescence sampling needle, one end of a communication pipe is communicated with the lower part of a carrying flow groove; the other end of the communication pipe is communicated with the lower part of a washing groove; one end of a first overflowing pipe is communicated with the upper part of the washing groove and the other end of the first overflowing pipe is communicated with the upper part of a waste liquid groove; one end of a second overflowing pipe is communicated with the upper end of the carrying flow groove; the other end of the second overflowing pipe is communicated with the upper part of the waste liquid groove. The washing device for the atomic fluorescence sampling needle has the beneficial effects that the technical defects of an automatic sampling manner of a previous atomic fluorescence spectrometer are eliminated; the adopted novel sampling needle washing device is simple in structure and reliable in operation; the accuracy and the testing precision of testing results are improved.

Description

Technical field [0001] The invention relates to an atomic fluorescence sampling needle cleaning device, belonging to the technical field of sampling needle cleaning devices. Background technique [0002] In the prior art, spectroscopic analytical instruments are widely used in the quantitative determination of elements. Atomic fluorescence photometer is a common spectrum analysis instrument. The basic working principle of the atomic fluorescence photometer test process is: each element of the test sample reacts to form the corresponding hydride, which is mixed with hydrogen and carrier gas, enters the atomizer to achieve atomization, and emits a specific wavelength under the irradiation of the excitation light source Atomic fluorescence signal. The detector receives the fluorescence signal and obtains the concentration data of the element according to the characteristic that the intensity of the fluorescence signal is proportional to the element concentration. [0003] At present...

AI Technical Summary

Problems solved by technology

The sampling needle draws the current directly after drawing the sample, which may cause the pollution of the current, affect the accuracy of the experimental results, and the test accuracy is low

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