CN201382900Y - Device for detecting suspended lead content in air - Google Patents
Device for detecting suspended lead content in air Download PDFInfo
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- CN201382900Y CN201382900Y CN200920118759U CN200920118759U CN201382900Y CN 201382900 Y CN201382900 Y CN 201382900Y CN 200920118759 U CN200920118759 U CN 200920118759U CN 200920118759 U CN200920118759 U CN 200920118759U CN 201382900 Y CN201382900 Y CN 201382900Y
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- reflecting mirror
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Abstract
The utility model relates to a device for detecting suspended lead content in air. Firstly samples need atomization in the prior art, the structure is complicated, and the use is inconvenient. An optical maser, a laser frequency multiplier and a single-sided reflecting mirror in the device are arranged in turn on an emergent optical path of a light source beam, a double-sized reflecting mirror is arranged on the optical path of a reflected light beam by the one-sided reflecting mirror, and is arranged parallel to the single-sided reflecting mirror, and a Newtonian reflector and a concave reflecting mirror are respectively arranged on two sides of the double-sided reflecting mirror. An optical filter, a focusing lens and a spectrum detecting instrument are arranged in order on the optical path of the reflected light beam of the other reflecting surface in the double-sided reflecting mirror, and an information processing and display unit is electrically connected with the spectrum detecting instrument. The device has simple structure and high fluorescence availability ratio, does not need preprocessing to samples and atomization to components, and can continuously conduct the on-line detection.
Description
Technical field
The utility model belongs to optical technical field, relates to a kind of device that detects lead content in the air, is mainly used in the content that detects suspension lead in the air.
Technical background
Lead is the nonessential material of human body, and is easy to enrichment in human body, and is difficult for discharging.Lead in the atmosphere is mainly derived from two aspects: natural cause and human factor.Natural cause mainly is the synthetic organo-lead compound of the natural dirt of volcanic eruption, dust storm soil and microorganism etc.; Human factor mainly is the tail gas that automobile, factory discharge, and leaded welding material and paint are produced the leaded waste liquid of accumulator etc.Plumbous existence form in atmosphere has: organic compound lead such as inorganic lead such as the lead of simple substance, massicot and lead tetraethyl.They are swum in the atmosphere or with aerocolloidal form by particle absorption usually and exist.
Lead is poisonous, and environmental pollution is very serious.Human body directly absorbs or the inrichment lead by food chain can gather in vivo, thereby human body is produced huge harm, because the plumbous heavier bottom that generally swims in atmosphere, so bigger to children's harm.Especially have a strong impact on children's growth.Detection method to lead mainly contains atomic absorption spectrography (AAS) (AAS), atomic emission spectrometry (AES) and atomic fluorescence spectrometry (AFS) at present.Highly sensitive, characteristics such as selectivity good, good stability that atomic absorption spectrography (AAS) has, but a lot of deficiencies are also arranged: and 1) be subjected to chemical serious interference, the result can not be satisfactory; 2) repeatability and poor accuracy; 3) to anticipate by sample; 4) to remove residuals after test is finished.Atomic emission spectrometry, have that analysis speed is fast, good reproducibility, can detect advantage such as multiple element simultaneously, disturb, generally be used for the analysis of solid metal more but be subject to chemistry equally, and can tracer liquid based on the emission spectrographic analysis of plasma, but analysis speed be very slow.Atomic fluorescence spectrometry has to be analyzed accurately, and selectivity is good, and detection limit is low, and the range of linearity is wide, disturbs advantages such as few.But traditional atomic fluorescence spectrometry instrument complex structure needs atomizing apparatus, carry out pre-service to sample.Above method all can not be monitored by the lead content to suspending in the air on the throne continuously.
Summary of the invention
The purpose of this utility model is the deficiency at above-mentioned technology, the device of suspension lead content in a kind of on-position measure air continuously is provided, have simple in structure, fluorescence utilization factor height, do not need to sample carry out pre-service, do not need the atomization parts, on-position measure continuously.
The utility model comprises laser instrument, laser frequency multiplier, single face catoptron, double mirror, concave mirror, Newtonian telescope, optical filter, condenser lens, spectral detection instrument, information processing display unit.Laser instrument, laser frequency multiplier and single face catoptron are placed on the emitting light path of light beam of light source successively, and the reflecting surface of single face catoptron and the angle of light beam of light source are 45 °.Double mirror is arranged on the light path of single face mirror reflects light beam, and be arranged in parallel with the single face catoptron.Newtonian telescope and concave mirror are separately positioned on the both sides of double mirror, wherein concave mirror is positioned on the light path of a reflecting surface folded light beam of double mirror, Newtonian telescope receives a part of fluorescence, concave mirror reflexes to the fluorescence of collecting on the Newtonian telescope simultaneously, again another reflecting surface through compiling of Newtonian telescope reflexing to double mirror.Optical filter, condenser lens and spectral detection instrument are placed on the light path of another reflecting surface folded light beam of double mirror successively, and wherein the spectral detection instrument is arranged on the focal plane of condenser lens.The information processing display unit is electrically connected with the spectral detection instrument, is used for receiving the signal of opto-electronic conversion.
Described laser instrument is a kind of in YAG laser instrument, solid-state laser, the dye laser.
Described laser frequency multiplier is the frequency tripling frequency multiplier.
Described single face catoptron is a plane mirror, and double mirror is that two reflectings surface all are the double mirror on plane.
Described concave mirror is with the concave surface of circular hole for the centre and is had the concave mirror of high reflectance, and the size of middle Circularhole diameter equals the diameter of hot spot.
Described spectral detection instrument is a kind of of grating spectrograph, monochromator, CCD spectrometer.
The course of work of the present utility model is: the laser that laser instrument sends is exported short wavelength's light beam after frequency multiplication.Light beam is through the reflection of single face catoptron, and the direction of propagation changes 90 °, incides on the reflecting surface of double mirror, and through the reflection of catoptron, direction changes 90 °; Light beam incides in the sample, and sample sends fluorescence after absorbing laser photon.The direct receiving unit fluorescence of Newtonian telescope, some fluorescence reflexes on the concave mirror in addition, give Newtonian telescope through the concave reflection mirror reflection, and the laser beam of transmission sees through from the circular hole of concave mirror, can be by the concave reflection mirror reflection.Newtonian telescope is collected fluorescence, another reflecting surface through double mirror reflexes to optical filter, mating plate filtering shortwave after filtration, behind the line focus lens, light incides in the spectral detection instrument, detect plumbous characteristic spectral line by the spectral detection instrument, convert electric signal to and send into the information processing display unit, provide content plumbous in the sample thus.
Laser fluorescence spectrum technology in the utility model, this is a mature technology.Inventive point of the present utility model is to use the laser fluorescence spectrum technology to provide simple in structure, an easy to operate sounding lead device, does not especially need the atomization parts, thereby has saved the energy and material.The optical system of design has improved the capacity gauge to fluorescence, has therefore improved the detectivity of whole device.
Compared with prior art, advantage of the present utility model:
1) simple and stable structure of test macro does not need the atomization parts, and is simple to operate, can at will realize on-the-spot on-position measure;
2) the utility model only need change sample when measuring, and need not to change system architecture, need not the heating and cooling device, and system reliability and stability are high, workable;
3) the utility model adopts preposition small-sized Newtonian telescope and concave mirror to be used collection fluorescence, and it is big to collect area, and the fluorescence light intensity of collecting is much bigger.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of device that detects suspension lead content in the air comprises laser instrument 1, laser frequency multiplier 2, single face catoptron 3, double mirror 4, concave mirror 5, Newtonian telescope 6, optical filter 7, condenser lens 8, spectral detection instrument 9, information processing display unit 10.Laser instrument 1, laser frequency multiplier 2 and single face catoptron 3 are placed on the emitting light path of light beam of light source successively, and the reflecting surface of single face catoptron 3 and the angle of light beam of light source are 45 °.Double mirror 4 is arranged on the light path of single face catoptron 3 folded light beams, and be arranged in parallel with single face catoptron 3.Newtonian telescope 6 and concave mirror 5 are separately positioned on the both sides of double mirror 4, wherein concave mirror 5 is positioned on the light path of 4 one reflecting surface folded light beams of double mirror, Newtonian telescope 6 receives a part of fluorescence, concave mirror 5 reflexes to the fluorescence of collecting on the Newtonian telescope 6 simultaneously, again through reflexing to another reflecting surface of double mirror 4 compiling of Newtonian telescope 6.Optical filter 7, condenser lens 8 and spectral detection instrument 9 are placed on the light path of double mirror 4 another reflecting surface folded light beams successively, and wherein spectral detection instrument 9 is arranged on the focal plane of condenser lens 8.Information processing display unit 10 is electrically connected with spectral detection instrument 9, is used for receiving the signal of opto-electronic conversion.
Information processing display unit 10 is a computer system, spectral detection instrument 9 adopts the CCD spectrometer, condenser lens 8 is convex lens, optical filter 7 is a low pass filter, Newtonian telescope 6 is a diameter 25cm Newtonian telescope, and concave mirror 5 is the concave mirror of middle band circular hole, and single face catoptron 3 is a plane mirror, frequency multiplier 2 is a frequency tripler, and laser instrument 1 is the YAG laser instrument.
After laser process laser frequency multiplier 2 frequencys multiplication that laser instrument 1 sends, output short wavelength's light beam.Light beam is through the reflection of single face catoptron 3, and the direction of propagation changes 90 °, incides on the reflecting surface of double mirror 4, and through the reflection of catoptron, direction changes 90 °; Light beam incides in the sample, and sample sends fluorescence after absorbing laser photon.Newtonian telescope 6 direct receiving unit fluorescence, some fluorescence reflexes on the concave mirror 5 in addition, give Newtonian telescope 6 through concave mirror 5 reflections, and the laser beam of transmission sees through from the circular hole of concave mirror 5, can not reflected by concave mirror 5.Newtonian telescope 6 is collected fluorescence, another reflecting surface through double mirror 4 reflexes to optical filter 7, mating plate filtering shortwave after filtration, behind the line focus lens 8, light incides in the spectral detection instrument 9, detect plumbous characteristic spectral line by spectral detection instrument 9, convert electric signal to and send into information processing display unit 10, provide content plumbous in the sample thus.The utlity model has advantages of higher simple in structure, easy to operate, repeatable.
Claims (6)
1. suspension lead content device in the detection air, comprise laser instrument, laser frequency multiplier, single face catoptron, double mirror, concave mirror, Newtonian telescope, optical filter, condenser lens, spectral detection instrument, information processing display unit, it is characterized in that: laser instrument, laser frequency multiplier and single face catoptron are placed on the emitting light path of light beam of light source successively, and the reflecting surface of single face catoptron and the angle of light beam of light source are 45 °; Double mirror is arranged on the light path of single face mirror reflects light beam, and be arranged in parallel with the single face catoptron; Newtonian telescope and concave mirror are separately positioned on the both sides of double mirror, wherein concave mirror is positioned on the light path of a reflecting surface folded light beam of double mirror, Newtonian telescope receives a part of fluorescence, concave mirror reflexes to the fluorescence of collecting on the Newtonian telescope simultaneously, again another reflecting surface through compiling of Newtonian telescope reflexing to double mirror; Optical filter, condenser lens and spectral detection instrument are placed on the light path of another reflecting surface folded light beam of double mirror successively, and wherein the spectral detection instrument is arranged on the focal plane of condenser lens; The information processing display unit is electrically connected with the spectral detection instrument, is used for receiving the signal of opto-electronic conversion.
2. suspension lead content device in the detection air as claimed in claim 1 is characterized in that: described laser instrument is a kind of in YAG laser instrument, solid-state laser, the dye laser.
3. suspension lead content device in the detection air as claimed in claim 1 is characterized in that: described laser frequency multiplier is the frequency tripling frequency multiplier.
4. suspension lead content device in the detection air as claimed in claim 1 is characterized in that: described single face catoptron is a plane mirror, and double mirror is that two reflectings surface all are the double mirror on plane.
5. suspension lead content device in the detection air as claimed in claim 1 is characterized in that: described concave mirror is with the concave surface of circular hole for the centre and is had the concave mirror of high reflectance, and the size of middle Circularhole diameter equals the diameter of hot spot.
6. suspension lead content device in the detection air as claimed in claim 1 is characterized in that: described spectral detection instrument is a kind of of grating spectrograph, monochromator, CCD spectrometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920118759U CN201382900Y (en) | 2009-04-27 | 2009-04-27 | Device for detecting suspended lead content in air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920118759U CN201382900Y (en) | 2009-04-27 | 2009-04-27 | Device for detecting suspended lead content in air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201382900Y true CN201382900Y (en) | 2010-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920118759U Expired - Lifetime CN201382900Y (en) | 2009-04-27 | 2009-04-27 | Device for detecting suspended lead content in air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201382900Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852456A (en) * | 2013-07-11 | 2014-06-11 | 北京安生绿源科技有限公司 | Equipment and method for quantitatively and rapidly detecting lead at constant temperature in real time |
| CN105301407A (en) * | 2015-11-12 | 2016-02-03 | 杭州电子科技大学 | Ultrasonic micro bubble charged property measuring device |
-
2009
- 2009-04-27 CN CN200920118759U patent/CN201382900Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852456A (en) * | 2013-07-11 | 2014-06-11 | 北京安生绿源科技有限公司 | Equipment and method for quantitatively and rapidly detecting lead at constant temperature in real time |
| CN103852456B (en) * | 2013-07-11 | 2016-05-11 | 江苏净邦生物科技有限公司 | A kind of Apparatus and method for of real-time constant-temperature quantitative fast detecting lead |
| CN105301407A (en) * | 2015-11-12 | 2016-02-03 | 杭州电子科技大学 | Ultrasonic micro bubble charged property measuring device |
| CN105301407B (en) * | 2015-11-12 | 2018-06-05 | 杭州电子科技大学 | A kind of device of ultrasound microbubble charging property measurement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100113 Effective date of abandoning: 20090427 |