Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Breakdown spectrum and absorption spectrum combined measurement system and method

A technology of absorption spectrum and breakdown spectrum, which is applied in the field of spectrum detection, can solve problems such as difficult to realize rapid multi-element detection, and achieve the effect of improving system detection ability, high resolution and high sensitivity

Pending Publication Date: 2020-06-12
HEBEI UNIVERSITY
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The detection methods of elements in aqueous solution can be divided into chemical analysis method and instrumental analysis method according to the detection principle. Both methods are difficult to realize simultaneous and rapid detection of multiple elements.

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Breakdown spectrum and absorption spectrum combined measurement system and method
  • Breakdown spectrum and absorption spectrum combined measurement system and method
  • Breakdown spectrum and absorption spectrum combined measurement system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1 Quantitative analysis of Pb and Ni in soil

[0036] Experimental process and result analysis

[0037] 1. Pretreatment of soil samples: Dry the soil samples taken in a 100-degree blower-type air-drying box and ensure that the samples are dry, then remove impurities; then screen with a 200-mesh sieve, and then grind; Add spectroscopically pure reagents PbO and Ni powder to the soil sample in proportion to the required content of the experiment. After mixing and grinding evenly, use a tablet machine to press into disc-shaped samples, and place the pressed soil samples in a drying oven to dry for later use.

[0038] 2. The construction of the optical system and the adjustment of the optical path: a YAG pulsed laser with an emission wavelength of 532nm is used as the light source. After the emitted high-energy pulsed laser is changed by the mirror, it is focused on the sample by the focusing lens. In the natural atmospheric environment of the laboratory, the surf...

Embodiment 2

[0042] Example 2 CO 2 concentration measurement

[0043] Experimental process and result analysis

[0044] (1) Before the experiment, adjust the optical path with visible light to ensure that the laser can be smoothly injected from the left side of the absorption pool to the right side after being collimated by the collimator, and the reflector is adjusted to form 21 light spots on the concave mirror surface of the White pool. Calculate its optical path to be 26.4m;

[0045] (2) Output the modulation signal to the laser controller through the modulation signal generator, and superimpose it with the DC bias signal output by the controller itself to control the laser to output a stable wavelength;

[0046] (3) Set the parameters of the photodetector, through which the absorbed optical signal is converted into an electrical signal, and then amplified and transmitted to the lock-in amplifier; the lock-in amplifier performs filtering and harmonic detection on the detected signal,...

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

PropertyMeasurementUnit
wavelengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a breakdown spectrum and absorption spectrum combined measurement system and method. The system comprises a laser emission mechanism, a detection mechanism, a signal acquisitionmechanism and a computer, wherein the detection mechanism comprises an object placing table for bearing a detected object, a container arranged above the object placing table and an air pump communicated with the upper part of the container; the laser emission mechanism comprises a first laser emitting mechanism and a second laser emitting mechanism; the signal acquisition mechanism comprises a first signal acquisition mechanism and a second signal acquisition mechanism, the first signal acquisition mechanism comprises optical fibers arranged on the two sides of the object placing table and aspectrograph connected with the optical fibers, and the second signal acquisition mechanism comprises a photoelectric detector, a digital oscilloscope, a lock-in amplifier and a data acquisition card. According to the invention, comprehensive, accurate and high-precision measurement can be carried out on gas-solid-liquid three-state substances, the detection capability of the system is improved,and the reliability of a measurement result is ensured.

Description

technical field [0001] The invention relates to the technical field of spectrum detection, in particular to a combined measurement system and method of breakdown spectrum and absorption spectrum. Background technique [0002] Laser-induced breakdown spectroscopy, a laser-based diagnostic technique, has been proven to be effective in measuring the concentration of various components in various media, including gas, liquid, and solid media, but recent studies have shown that laser-induced breakdown spectroscopy Spectroscopy technology is still lacking in gas detection; at the same time, tunable diode laser absorption spectroscopy technology has the advantages of high sensitivity, high selectivity, fast and real-time monitoring, and is widely used in the monitoring of atmospheric trace gases. However, the detection of liquids and solids is rarely reported in papers. [0003] Laser-induced breakdown spectroscopy technology can realize the detection of gas-liquid-solid three-sta...

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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/71G01N21/39
CPCG01N21/71G01N21/39G01N2021/399
Inventor 李红莲康沙沙谢红杰王红宝李小亭方立德
Owner HEBEI UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com