CN205691507U - The highly sensitive quantitative testing device of heavy metal element in a kind of atmospheric aerosol - Google Patents
The highly sensitive quantitative testing device of heavy metal element in a kind of atmospheric aerosol Download PDFInfo
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- CN205691507U CN205691507U CN201620328819.5U CN201620328819U CN205691507U CN 205691507 U CN205691507 U CN 205691507U CN 201620328819 U CN201620328819 U CN 201620328819U CN 205691507 U CN205691507 U CN 205691507U
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Abstract
The utility model discloses the highly sensitive quantitative testing device of heavy metal element in a kind of atmospheric aerosol and include YAG laser, condenser lens, optical fiber, spectrogrph, trigger and computer, it is characterized in that being provided with the enriching apparatus of heavy metal element in a gas and the system of double-pulse laser LIBS detection device composition, by filter, the heavy metal element suspended in an atmosphere with aerosol shape is enriched with, substantially increase LIBS to the detection sensitivity of detection device for multi metallic elements in air, and establish content of beary metal and the one-to-one relationship of contents of heavy metal elements in air of enrichment, create conditions for detection by quantitative, can be quick, detect the concentration value of detection device for multi metallic elements exactly.
Description
Technical field
This utility model belongs to technical field of spectral detection, is specifically related to heavy metal element Gao Ling in a kind of atmospheric aerosol
Quick quantitative testing device.
Background technology
Along with developing rapidly of industrial technology, the discharge of industrial dust, the burning utilization of natural energy source, vehicle exhaust and
A large amount of harmful gass containing heavy metal of the generation such as auto tire wear and dust etc. cause to ecological environment and human health
Serious harm, therefore, it is necessary to detect heavy metal in atmospheric environment and compound thereof.
At present, in atmospheric aerosol, heavy metal element detection method mainly has atomic absorption spectrography (AAS) (AAS), inductive
Plasma emlssion spectrometry (ICP-OES), electromagnetic coupled ICP-MS (ICP-MS) etc., although these measuring methods
Having higher accuracy of detection, these technology are required for first sampling, before then sample being carried out complexity with additive reagent
Phase processes, and this not only considerably increases the time required for detection, and meanwhile, additive reagent, often to bad environmental, necessarily causes
Produce secondary pollution during detection, reduce accuracy of detection.In addition with X-ray fluorescence spectroscopy, although the method is not required to
The early stage wanting too complex processes, but its detection limit is the lowest, and harmful.Therefore development a kind of quickly, in real time, can
Detect Determination Method of Heavy Metal Contamination in the atmospheric aerosol of multiple element simultaneously and just seem particularly necessary.
LIBS (LIBS) technology is that a kind of new spectrum got up in development in recent years in the world divides
Analysis technology.Comparing front several analysis method, LIBS has: without any preparation of samples process, analysis
Speed is limited soon, not by sample morphology, the consumption of sample seldom, contactless and remote analysis can be realized, be suitable for
In superioritys such as on-line checking, analyze detection field at elementary composition and receive significant attention.Heavy metal element in air is basic
On be all metallic compound, and with aerosol shape exist, owing in atmospheric environment, content of beary metal is relatively low, sent out by LIBS technology
The restriction of exhibition level, insufficient sensitivity during LIBS direct detection heavy metal contamination in an atmosphere, therefore use LIBS technology
Directly in detection air, the research of heavy metal pollution is the most little.
Summary of the invention
This utility model is for prior art deficiency in atmospheric aerosol detects, it is proposed that in a kind of atmospheric aerosol
Element highly sensitive detection device, the outstanding feature of this device is by having the filter of flow-control to atmosphere heavy metal element
Enrichment mode, heavy metal analysis problem in the gas of low concentration, be converted into and there is higher heavy metal concentration solid-like product examine
Survey, be effectively improved the sensitivity of detection.
The highly sensitive quantitative testing device of heavy metal element in a kind of atmospheric aerosol, including YAG laser, condenser lens,
Optical fiber, spectrogrph, trigger and computer, it is characterised in that be provided with one by the enriching apparatus of heavy metal element in gas with double
The system of pulse laser induced breakdown spectral (LIBS) detection device composition, enriching apparatus by mass flow controller, filter paper and
Air pump is connected and composed by pipeline, and double-pulse laser induced breakdown spectrum (LIBS) detects two pulse Nd:YAG laser of device
Device and spectral detection system composition.
The highly sensitive quantitative testing device of heavy metal element in described a kind of atmospheric aerosol, it is characterised in that in gas
The enriching apparatus of heavy metal element uses mass flow controller, air pump to be linked together by pipeline, flow controller, air pump
Between load onto paper plane direction and be perpendicular to the filter paper of duct orientation, air pump pumped gas, through flow controller and pipeline by filter
Paper, the heavy metal adsorption existed with particle and aerosol state, on filter paper, is flowed through the flow of pipeline, obtains by control
Series has flow through the sample of different volumes gas, and this series of samples contains different content of beary metal.
Described double-pulse laser induced breakdown spectrum detection device is mainly by two pulse Nd:YAG laser wavelengths
1064nm, pulse width 6ns, repetitive rate 20Hz and spectral detection system composition, the laser coaxial conllinear that two laser instrument send
Propagate, and utilize the vitreous silica planoconvex lens of a focal length 56.0mm to focus on, vertically get to sample surfaces, produce plasma
Radiation spectrum, spectrogrph record also gathers spectrum, and the pulse energy of the first and second laser is 100mJ laser external trigger mode
Work, second laser instrument and the pulse interval of first laser instrument, controlled by delayed-pulse generator DG535.
What in utilization a kind of atmospheric aerosol of this utility model, the highly sensitive quantitative testing device of heavy metal element had is useful
Effect is:
The highly sensitive quantitative testing device of heavy metal element in a kind of atmospheric aerosol, utilizes mass flow controller, filtration
The enriching apparatus of heavy metal in aerosol set up by device and air pump, then obtains the mistake being remarkably reinforced by LIBS detection test substance concentration
On the one hand filter sample, by the filter enrichment mode to atmosphere heavy metal element, heavy metal analysis in the gas of low concentration
Problem, is converted into and has the detection of higher heavy metal concentration solid sample；On the other hand with the huge sum of money in filter enriched gas colloidal sol
Belonging to, after gas is by filter paper in filter, the heavy metal of filter paper enrichment is directly proportional to the gas volume flow through, and establishes enrichment
Content of beary metal and the one-to-one relationship of contents of heavy metal elements in air, create conditions for detection by quantitative；Furthermore, use double
Pulse LIBS technology not only increases characteristic spectrum intensity, improves the detection sensitivity signal-to-background ratio with spectrum, reduces detection limit,
The signal spectrum simultaneously produced has less relative standard deviation, and this makes LIBS technology have higher accuracy and repeatable
Property.This device is effectively improved the sensitivity of element detection by quantitative atmospheric aerosol in terms of three above.
Accompanying drawing explanation
Fig. 1, Fig. 2 are the highly sensitive quantitative testing device of heavy metal element in this utility model one atmospheric aerosol.
Wherein admission line 1, mass flow controller 2, sampling filter paper 3, wire netting 4, vacuum pump 5, spectrogrph 6, YAG swash
Light device 7, DG535 pulse generator 8, computer 9, optical fiber 10, plane mirror 11, condenser lens 12, object stage 13.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is further described:
The highly sensitive quantitative testing device of heavy metal element in a kind of atmospheric aerosol, including YAG laser 7, condenser lens
11, optical fiber 10, spectrogrph 6, DG535 pulse generator 8 and computer 9, it is characterised in that be provided with heavy metal unit in a gas
Element enriching apparatus and double-pulse laser LIBS detection device composition system, by air pump by air with aerosol form
The heavy metal existed and compound press-in thereof have the enrichment reaching heavy metal element in the air filter of flow-control, then use
LIBS detection test substance concentration obtains the filtered sample being remarkably reinforced, and improves the sensitivity of LIBS detection with this.
Described enriching apparatus is by admission line 1, mass flow controller 2, sampling filter paper 3, wire netting 4, vacuum pump 5 structure
Becoming, gas enters from admission line 1 and arrives sampling filter paper 3 through mass flow controller 2, and sampling filter paper 3 is perpendicular to pipeline and places
Allowing gas to arrive its surface the most uniformly be enriched with, wire netting 4 is also perpendicularly to pipeline and is positioned over pipe interior sampling filter
After paper 3, it is used for preventing sampling filter paper 3 during bleeding to be inhaled into vacuum pump 5.The stream of pipeline is flowed through by control
Amount, obtains series and has flow through the sample of different volumes gas (i.e. different content of beary metal).
The sampling filter paper 3 of heavy metal in enrichment certain volume gas is placed on the object stage 13 in detection device, opens
Pulse laser 7, under the control of DG535 pulse generator 8, laser beam changes direction through plane mirror 11 and arrives focusing thoroughly
Mirror 12, is focused on through lens 12 light beam, and regulation object stage makes sampling filter paper 3 be in condenser lens 12 with the relative position of lens
Near focal point, induced with laser its surface produce plasma spectrometry and send into calculating in optical fiber 10 incoming light spectrometer 6
Machine 9 carries out the process of data and the analysis of material element.
Claims (5)
1. the highly sensitive quantitative testing device of heavy metal element in atmospheric aerosol, including YAG laser, condenser lens, light
Fibre, spectrogrph, trigger and computer, it is characterised in that be provided with one by the enriching apparatus of heavy metal element in gas and Shuan Mai
Rushing the system of LIBS (LIBS) detection device composition, enriching apparatus is gentle by mass flow controller, filter paper
Pump is connected and composed by pipeline, and double-pulse laser induced breakdown spectrum (LIBS) detects two pulse Nd:YAG laser instrument of device
Form with spectral detection system.
The highly sensitive quantitative testing device of heavy metal element in a kind of atmospheric aerosol the most according to claim 1, its feature
Being, in gas, the enriching apparatus of heavy metal element uses mass flow controller, air pump to be linked together by pipeline, flow
Loading onto filter paper between controller, air pump, its surface is perpendicular to air in pipeline flow direction, and air pump pumped gas, through flow
Controller and pipeline are by filter paper, and the heavy metal adsorption existed with particle and aerosol state is on filter paper, by controlling
Flowing through the flow of pipeline, obtain series and flow through the sample of different volumes gas, this series of samples contains different heavy metals and contains
Amount.
The highly sensitive quantitative testing device of heavy metal element in a kind of atmospheric aerosol the most according to claim 1, its feature
Being, described double-pulse laser induced breakdown spectrum detection device is mainly by two pulse Nd:YAG laser wavelengths
1064nm, pulse width 6ns, repetitive rate 20Hz and spectral detection system composition, the laser coaxial conllinear that two laser instrument send
Propagate, and utilize the vitreous silica planoconvex lens of a focal length 56.0mm to focus on, vertically get to sample surfaces, produce plasma
Radiation spectrum, spectrogrph record also gathers spectrum, and the pulse energy of the first and second laser is 100mJ, and laser is in external trigger
Work under mode, second laser instrument and the pulse interval of first laser instrument, controlled by delayed-pulse generator DG535
System.
The highly sensitive quantitative testing device of heavy metal element in a kind of atmospheric aerosol the most according to claim 2, its feature
It is, in gas in the enriching apparatus of heavy metal element, have a mass flowmenter, for controlling the gas body by filter
Long-pending.
The highly sensitive quantitative testing device of heavy metal element in a kind of atmospheric aerosol the most according to claim 2, its feature
It is in gas in the enriching apparatus of heavy metal element, have a wire netting, be used for protecting filter paper, make filter paper in pumping process
Keep formation state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620328819.5U CN205691507U (en) | 2016-04-14 | 2016-04-14 | The highly sensitive quantitative testing device of heavy metal element in a kind of atmospheric aerosol |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620328819.5U CN205691507U (en) | 2016-04-14 | 2016-04-14 | The highly sensitive quantitative testing device of heavy metal element in a kind of atmospheric aerosol |
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| CN205691507U true CN205691507U (en) | 2016-11-16 |
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| CN201620328819.5U Expired - Fee Related CN205691507U (en) | 2016-04-14 | 2016-04-14 | The highly sensitive quantitative testing device of heavy metal element in a kind of atmospheric aerosol |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727642A (en) * | 2017-09-26 | 2018-02-23 | 苏州莱铯科技有限公司 | A kind of laser detecting method of Atmospheric particulates heavy metal element |
| CN107831159A (en) * | 2017-12-13 | 2018-03-23 | 中国科学院上海应用物理研究所 | The detection means of metallic element in a kind of aerosol |
| CN109085151A (en) * | 2018-09-11 | 2018-12-25 | 南京信息工程大学 | The on-line measuring device and detection method of a kind of atmosphere pollution mercury and its isotope |
| CN109374596A (en) * | 2018-11-08 | 2019-02-22 | 天津大学 | Portable flue gas heavy metal element detection system based on laser induced breakdown spectroscopy |
| CN110412017A (en) * | 2019-08-26 | 2019-11-05 | 青岛大学 | A kind of spectrum detection device and its method of haze elemental composition |
| CN110702666A (en) * | 2019-10-25 | 2020-01-17 | 北京农业智能装备技术研究中心 | System and method for detecting trace heavy metals in air |
| CN111398106A (en) * | 2020-05-18 | 2020-07-10 | 南京信息工程大学 | Morphological analysis method for heavy metal in atmospheric particulates |
| CN113092450A (en) * | 2021-04-13 | 2021-07-09 | 南京信息工程大学 | Atmospheric aerosol rapid detection traceability device and method |
| CN114062289A (en) * | 2021-11-16 | 2022-02-18 | 天津中医药大学 | Metal particle analysis method based on laser-induced breakdown spectroscopy technology |
-
2016
- 2016-04-14 CN CN201620328819.5U patent/CN205691507U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727642A (en) * | 2017-09-26 | 2018-02-23 | 苏州莱铯科技有限公司 | A kind of laser detecting method of Atmospheric particulates heavy metal element |
| CN107727642B (en) * | 2017-09-26 | 2020-07-10 | 苏州莱铯科技有限公司 | Laser detection method for heavy metal elements in atmospheric particulates |
| CN107831159A (en) * | 2017-12-13 | 2018-03-23 | 中国科学院上海应用物理研究所 | The detection means of metallic element in a kind of aerosol |
| CN109085151A (en) * | 2018-09-11 | 2018-12-25 | 南京信息工程大学 | The on-line measuring device and detection method of a kind of atmosphere pollution mercury and its isotope |
| CN109374596A (en) * | 2018-11-08 | 2019-02-22 | 天津大学 | Portable flue gas heavy metal element detection system based on laser induced breakdown spectroscopy |
| CN110412017A (en) * | 2019-08-26 | 2019-11-05 | 青岛大学 | A kind of spectrum detection device and its method of haze elemental composition |
| CN110702666A (en) * | 2019-10-25 | 2020-01-17 | 北京农业智能装备技术研究中心 | System and method for detecting trace heavy metals in air |
| CN111398106A (en) * | 2020-05-18 | 2020-07-10 | 南京信息工程大学 | Morphological analysis method for heavy metal in atmospheric particulates |
| CN113092450A (en) * | 2021-04-13 | 2021-07-09 | 南京信息工程大学 | Atmospheric aerosol rapid detection traceability device and method |
| CN114062289A (en) * | 2021-11-16 | 2022-02-18 | 天津中医药大学 | Metal particle analysis method based on laser-induced breakdown spectroscopy technology |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhejiang Normal University Document name: Notification to Pay the Fees |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161116 Termination date: 20180414 |