Combined multi-optical-path integrated atomic luminoscope

Abstract

The invention particularly discloses a combined multi-optical-path integrated atomic luminoscope and a testing method and relates to a technical system. The connection mode is that a sampling system is connected with a generator and a gas-liquid separation and drying system; the gas-liquid separation and drying system is connected with an atomizer; and the atomizer is connected with a light tank in an optical structure. The optical structure is positioned above the outlet of the atomizer as a whole, and the system integral control logic is made by a control system. Cold atoms or gaseous hydrides generated by elements to be measured in a sample solution are separated from other elements, are introduced through a highly pure inert gas (argon) into the atomizer. The elements to be measured are atomized by a heating and ignition process, and different excitation light sources corresponding to the elements to be measured are selected by rotating an inner photomask and an outer photomask ofthe optical structure. The elements to be measured are excited by absorbing specific light corresponding to the element to have energy state transition so as to generate fluorescence containing characteristic spectral lines of the elements to be measured, and detection signals of a single photomultiplier tube correspond to the content of the elements to be measured. The invention has the advantages of high automation, stable determination, high sensitivity and small coexistence interference and the like.

Description

technical field [0001] The invention belongs to the field of atomic fluorescence testing, in particular to a combined multi-light path integrated atomic fluorescence instrument. Background technique [0002] Elemental analysis is applicable to many occasions. Mineral resource identification and metallurgical process elemental analysis are one of the main directions. The second is elemental chemical reaction tracking detection, and the environmental and ecological functions of elements are another main application direction of detection. Derived from this Tracking and detection of element changes in the upstream and downstream of the food chain and in the environment. Taking the field of environment and ecology as an example, among many elements, mercury has attracted much attention, followed by elements such as arsenic and lead, and other newly produced trace heavy metals, such as Cr, Cd, Se, etc. Mercury is extremely toxic and a major environmental pollutant for humans. T...

AI Technical Summary

Problems solved by technology

[0007] However, the existing cold atomic fluorescence elemental analyzers are all single-element analyzers, and multiple elemental analysis cannot be performed on the same elemental analyzer. Different inlet pipes, excitation light sources, and detection components need to be replaced to complete the detection.

Therefore, the operation process is extremely complicated. All the light sources that excite the light source at the same time are required to be kept on after starting up, entering the warm-up and measurement stages, so as to maintain the stability of the incident light intensity of the light source. The warm-up time usually takes 30 minutes to more than an hour. Therefore, the frequent adjustment of the optical structure will greatly reduce the test accuracy and the stability and reliability of the system, and the detection cycle is long, which cannot meet the needs of automatic, real-time, stable and accurate modern detection

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