Method, system and storage medium for detecting particle size of loose particle accumulation
A technology of particle accumulation and detection method, which is applied in the field of atomic emission spectrometry to achieve the effects of convenient and quick in-situ, fast analysis speed and high sensitivity
Active Publication Date: 2022-07-05
INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
View PDF19 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
These works have shown that some restrictions on the placement of samples before component analysis can improve the accuracy of LIBS technology in the analysis of loose particle accumulations with soft matter characteristics to a certain extent, but these literatures have never studied the laser-induced shock. Discussion on the application of transspectroscopy technology to the detection of particle size in loose accumulations
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0059] This embodiment is merely exemplary, and is not intended to limit the scope of the present invention and its application. The detection method of the present invention is described by taking the accumulation of elemental copper ball microparticles as an example. The detection method of the present embodiment comprises the following steps:
[0060] 1) Using 9 kinds of copper ball particles with narrow particle size distribution and particle center size (d) of 218±15, 190±15, 165±10, 132±10, 109±5, 95±5, 77±5, 69±5, and 49±5μm Form a set of samples. Each sample particle is naturally accumulated in a rectangular box of 70mm*70mm*10mm, and the surface of the accumulation is gently scraped without any pressure;
[0061] 2) Place the prepared 9 sample sets on the two-dimensional moving platform of the LIBS device in turn. The platform moving speed is set to 0.8 cm / s, the laser pulse energy is set to 120 mJ, the laser repetition frequency is set to 1 Hz, and the focal plane ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a method, a system and a storage medium for detecting the particle size of loose particle accumulations, which include: preparing N loose particle accumulation samples with different particle sizes to form a set of particle accumulation sample sets; collecting the particle accumulation samples The samples are placed on the sample platform of the LIBS system in turn, and the emission spectrum of the laser plasma is measured to obtain the characteristic spectrum corresponding to each sample; two characteristic spectrum lines are selected from the characteristic spectrum of each sample, and each The ratio of the integral area of the two characteristic spectral lines corresponding to each sample; the measured ratio is used as a probe to characterize the particle size in the loose particle accumulation, and the two selected spectral lines of each sample corresponding to this set of samples are used According to the spectral intensity ratio, the calibration relationship between the spectral data and the particle size is constructed; the characteristic spectral data of the loose particle accumulation to be measured is obtained; according to the characteristic emission spectral data corresponding to the loose particle accumulation to be measured, the calibration relationship between the spectral data and the particle size is used. Obtain the particle size in the particle stack to be tested.
Description
technical field [0001] The invention relates to the technical field of atomic emission spectrometry, in particular to a method, system and storage medium for detecting the particle size of loose particle accumulations based on laser-induced breakdown spectroscopy technology. Background technique [0002] In actual production, environmental exploration and scientific research activities, it is often necessary to face the problem of on-line / in-situ detection of particle size in the accumulation of loose microparticles (particles of tens to hundreds of microns). There are many traditional methods for measuring particle size in particle accumulations, such as using standard sieves, microscopes, and laser particle size analyzers. Although these methods have the advantages of relatively simple equipment and relatively easy operation, they cannot meet the requirements of online / in situ detection conveniently and quickly. [0003] Laser Induced Breakdown Spectroscopy (LIBS) is wide...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/02G01N21/73
CPCG01N15/0205G01N21/73
Inventor 钱东斌李亚举李小龙马新文
Owner INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI