A double-channel atomic fluorescence photometer

Abstract

The invention relates to a double-channel atomic fluorescence photometer, which includes a casing, a working chamber and a combustion chamber. The bottom of the combustion chamber is provided with a burner, and the top is provided with a smoke collection hood. The inner wall of the smoke collection hood is slidingly connected with an annular block. There is a material cleaning brush on the outer wall of the annular block, and the material cleaning brush is attached to the inner wall of the smoke collection hood. Two guide blocks are symmetrically arranged on the outer wall of the annular block, and a set of There is a guide groove for the guide block to slide. The combustion chamber is equipped with a driving mechanism that drives the annular block to slide along the axial direction of the fume collection hood. The combustion chamber is located above the burner to collect impurities and transport them to the working chamber. material organization. In the present invention, an annular block with a material cleaning brush is installed by sliding in the smoke collecting hood, and the driving mechanism drives the ring block to move so that the cleaning brush cleans the impurities in the smoke collecting hood and then sends them out through the material receiving mechanism, without the need for collecting The fume hood is disassembled and cleaned, which is conducive to improving the convenience of cleaning the inside of the fume collecting hood.

Description

technical field [0001] The invention relates to the technical field of test instruments, in particular to a double-channel atomic fluorescence photometer. Background technique [0002] The atomic fluorescence spectrometer uses potassium borohydride or sodium borohydride as a reducing agent to reduce the elements to be analyzed in the sample solution to volatile covalent gaseous hydrides, and then introduce them into the atomizer with the help of carrier gas, and the argon-hydrogen Atomized in the flame to form ground state atoms. [0003] The existing atomic fluorescence photometer includes a casing, and a working chamber is arranged in the casing, and a combustion chamber for burning the sample solution is arranged in the working chamber, and a chamber for discharging the smoke generated during the combustion process is arranged on the combustion chamber. The smoke outlet is provided with a smoke collecting hood. [0004] The above-mentioned existing technical solutions h...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: the above-mentioned atomic fluorescence photometer will place the entire casing under the smoke hood during use and make the smoke collection hood face the smoke hood, so that the smoke exhausted from the smoke outlet Concentrate through the fume collection hood and then enter the fume hood for discharge, so as to reduce the smoke generated by the smoke outlet from drifting arbitrarily in the laboratory. During the process of the smoke passing through the fume collection hood, due to the gas generated during the combustion process of the sample In addition to impurities, solid and liquid impurities will also be mixed. During the process of passing through the inner wall of the fume collecting hood, some of these solid and liquid impurities will remain on the inner wall of the fume collecting hood. After a long period of accumulation, they may be Falling from the fume collection hood into the combustion chamber, the sample will be mixed with these impurities during the combustion process, which will easily lead to a decrease in the detection accuracy of the sample. Therefore, when cleaning the inside of the fume collection hood, it is necessary to remove the fume collection hood from the smoke outlet. After the mouth is removed and cleaned, then reinstalled, which makes it more inconvenient to clean the fume collecting hood

Images