Automatic dual-ray detection method of mass concentration and elementary composition of particulate matter in gaseous fluid

Abstract

The invention discloses a full-automatic dual-ray detection method of mass concentration and elementary composition of particulate matter in gaseous fluid. The method comprises the steps that filter paper is transferred to a detection place of a beta-ray detection device which is fixedly mounted on a base for standing by using an automatic filter paper conveying device, particulate matter is enriched to form samples to be detected, concentration detection of the particulate matter is carried out simultaneously or after the enrichment is completed and a triggering signal is triggered; after the test is finished, the samples to be detected are transferred to a detection place of an X ray detection device installed on the base for performing concentration detection of heavy metals; then, the filter paper conveying action is repeatedly carried out, wherein the repeatability can be controlled in a periodical or pre-set automatic mode or manual mode. According to the method, full-automatic on-line periodical measurement on concentration of the particulate matter and concentration of the heavy metals in the gaseous fluid and the duty factor of the concentration of the heavy metals in the particulate matter can be realized, so that main sources of the gaseous fluid can be known; automatic control and unattended operation can be realized, thereby reducing the cost and increasing the efficiency.

Description

technical field [0001] The invention relates to the field of substance detection in gaseous fluids, in particular to a dual-ray automatic detection method for particle mass concentration and element composition in gas. Background technique [0002] At present, in the field of detection of gaseous fluids, the existing technologies include detection of the quality of particles in gaseous fluids and detection of heavy metal elements in particles. Methods for detecting the quality of particulate matter include β-ray method, oscillating balance method, light scattering method, etc.; methods for detecting heavy metal elements in particulate matter include X-ray fluorescence method, inductively coupled plasma emission spectrometry, atomic fluorescence method, etc. [0003] However, the related technologies can only complete the test of one item at a time, that is, only the mass of particulate matter or the mass of heavy metals in particulate matter can be measured at a time. It is...

AI Technical Summary

Problems solved by technology

[0003] However, the related technologies can only complete the test of one item at a time, that is, only the mass of particulate matter or the mass of heavy metals in particulate matter can be measured at a time.

It is impossible to test the mass of particulate matter and the mass of internal heavy metal elements at the same time, and it is impossible to measure the percentage of elements in particulate matter

Images