The invention relates to a portable laser-induced breakdown spectroscopy analyzer and a laser-induced breakdown spectroscopy analysis method. The analyzer comprises a solid laser device, a light path unit and a data processing unit, wherein the light path unit comprises a dichroscope, a first focusing lens, a second focusing lens, an optical fiber and a multi-channel spectrometer; laser emitted by the solid laser device is projected to a sample sequentially through the dichroscope and the first focusing lens; a radiation signal sent by the sample enters the feeding ends of the light splitting optical fiber sequentially through the first focusing lens, the dichroscope and the second focusing lens and then enters the multi-channel spectrometer through a plurality of optical fiber branches; the data processing unit comprises a data acquirer connected with the spectrometer and a processor connected with the data acquirer. According to the portable laser-induced breakdown spectroscopy analyzer and the laser-induced breakdown spectroscopy analysis method, the laser induces a sample to generate the radiation signal; after the radiation signal is collected through the light path unit and the data processing unit and then is analyzed, element constituents and the concentration of the sample can be obtained.

Laser-induced breakdown spectroscopy analyzer and laser-induced breakdown spectroscopy analysis method

The invention discloses a direct analysis device of solid samples, wherein a sample pool is installed on a three-dimensional moving platform, a microscopic imaging system is aligned to a solid sample in the sample pool, a laser beam emitted by a picosecond laser is focused onto the surface of the sample in the sample pool through a laser optical system, particles generated by laser ablation enter an inductively coupled plasma source mass spectrometer through an aerosol transmission system, the direct analysis device has the advantages that the laser wavelength can be selected from 1064 nm, 532 nm, 355 nm and 266 nm, the pulse width is 30 ps, the pulse frequency is 20 Hz, the pulse energy is continuously adjustable, and the maximal pulse energy of 266 nm reaches 3.0 mJ; the position of the sample pool is three-dimensional controllable, and the transmission pipeline of the aerosol transmission system switched by a tee solenoid valve is short; a non-coaxial system is adopted to quickly focus and position the sample ablation position. As shown in analysis, basically no element fractionation effect exists in the elements of low alloy steel, pure copper, pure aluminum and the like, and basically no matrix effect exists in the elements of iron base, copper base, aluminum base and the like.

Direct analysis device of solid samples

The invention relates to an online detection apparatus and method for soil elements The apparatus comprises a soil-penetrating detection component and a laser irradiation and detection system, wherein the soil-penetrating detection component is connected with the laser irradiation and detection system through optical fibers; the soil-penetrating detection component comprises a housing and focusing lenses disposed in the housing; the laser irradiation and detection system comprises a laser irradiation system, a laser acquisition system and a control system; the laser irradiation system is connected with a focusing lens and the control system respectively; and the laser acquisition system is connected with the other focusing lens and the control system respectively The method comprises the following steps of soil-penetrating detection, acquisition of attenuation spectrum information of soil plasma, formation of a laser plasma spectrum of to-be-detected soil and calculation of element components of the to-be-detected soil The apparatus and the method can realize on-line and in-situ detection of the soil in a field environment

Online detection apparatus and method for soil elements

The invention relates to an elemental analyzer, and in particular relates to a laser-induced breakdown spectroscopy (LIBS) elemental analyzer. An accurate target point positioning laser-induced breakdown spectroscopy elemental analyzer is mainly characterized by comprising a pulse laser, wherein a laser beam is conducted onto an analysis sample inside a sample room through a laser transmission system; an accurate target point positioning system is arranged on the sample room; a target sample emission spectrum is connected with a spectrograph through a transmission optical fiber of the accurate target point positioning system. The elemental analyzer has the advantages that the whole suit of LIBS analyzer consists of a laser system, a light guide system, a positioning system and the sample room which are independent, so that the elemental analyzer can be taken as one piece of equipment and also can be used by conveniently replacing laser sources with different parameters, or an in-situ sample can be directly analyzed without using the sample room; the application range of the analyzer is enlarged, and the practicability and the commercialization of an instrument are promoted. The accurate target point positioning system can realize the micron dimension positioning of three-dimensional space and the automatic correction of target points, so that the accuracy of measurement and analysis results of the analysis instrument is improved, and the sensibility of analytical elements of the instrument is promoted.

Accurate target point positioning laser-induced breakdown spectroscopy (LIBS) elemental analyzer and method thereof

The utility model discloses an atomic fluorescence spectroscopy device based on laser ablation plume. The atomic fluorescence spectroscopy device comprises a first laser, a second laser, a sample table as well as a signal acquisition and processing system, wherein a frequency multiplication generator, a time delayer, an energy attenuator and a light path climbing system are sequentially arranged along the light path of the first laser; laser emitted from the light path climbing system is focused on the surface of a sample from the place right above the sample table so as to generate plume; the laser emitted from the second laser is used for promoting atomic excitation on the plume so as to generate characteristic spectral lines; the distribution information of elements on the surface of the sample is displayed according to the characteristic spectral lines and the spatial information of the first laser hit sample. The utility model provides the atomic fluorescence spectroscopy device based on laser ablation plume, rapid, micro-damage and multi-element analysis and detection of the sample can be achieved, the device has the characteristics of being simple to adjust, low in cost, low in detection limit and the like, the distance between a lens and an object, and the laser energy can be adjusted according to different samples, and an optimal signal to noise ratio can be obtained.

Atomic fluorescence spectroscopy device based on laser ablation plume

Laser-induced breakdown spectrum in-situ analyzer

The invention discloses an LA-ICPMS (laser ablation inductively coupled plasma mass spectrometry) based original position statistic distribution analysis system and belongs to the technical field of material analysis characterization The system disclosed by the invention comprises a laser ablation sample-injection system, an ICP (inductively coupled plasma) ion source system, an interface system, an ion transmission system, a mass spectrum detection system, a sample moving/positioning system and a signal processing system, wherein the sample moving/positioning system is used for continuously activating synchronous scanning, and the signal processing system is used for carrying out mathematical resolution on acquired mass spectrum signals By using the system disclosed by the invention, based on the continuously-activated synchronous scanning moving/positioning of samples and the laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS), an original position statistic distribution analysis on chemical compositions and states thereof in large-scale ranges of uneven surfaces of metallic and non-metallic materials can be realized The system disclosed by the invention has the advantages that the system can be used for metal samples and appropriate for non-metallic samples as well; the content and distribution of an element (as low as 01 mu g/g) can be analyzed; compared with an original position analyzer for metals, the sensitivity is increased by three orders of magnitude; and the system is suitable for samples with regular and even surfaces and samples with irregular or special-shaped surfaces

LA-ICPMS (laser ablation inductively coupled plasma mass spectrometry) based original position statistic distribution analysis system

The invention discloses a VOC (volatile organic compound) analyzer with a carrier gas regeneration function and belongs to the technical field of environmental monitoring. The analyzer comprises a sampling system, an analyzing system and a controlling and acquiring system, wherein the sampling system and the analyzing system are connected through a hose or a metal tube, are coupled through a six-way valve and can be switched between a sampling state and an analyzing state; the sampling system and the analyzing system are connected with the controlling and acquiring system through data lines, and the controlling and acquiring system finally realizes sequential control and data acquisition of each component. The analyzer has the advantages that cyclic regeneration and use of carrier gas can be realized, steel cylinder gas and a gas generator are not required to be matched for use, multiple detection modules can be configured to meet multiple detection requirements, the maintenance cost can be greatly reduced, and the online monitoring requirement is met conveniently.

VOC (volatile organic compound) analyzer with carrier gas regeneration function

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Laser-induced breakdown spectrum in-situ analyzer

LA-ICPMS (laser ablation inductively coupled plasma mass spectrometry) based original position statistic distribution analysis system

VOC (volatile organic compound) analyzer with carrier gas regeneration function