CN201876416U - Cold atomic absorption differential mercury vapor analyzer - Google Patents
Cold atomic absorption differential mercury vapor analyzer Download PDFInfo
- Publication number
- CN201876416U CN201876416U CN201020631136XU CN201020631136U CN201876416U CN 201876416 U CN201876416 U CN 201876416U CN 201020631136X U CN201020631136X U CN 201020631136XU CN 201020631136 U CN201020631136 U CN 201020631136U CN 201876416 U CN201876416 U CN 201876416U
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- differential
- ultraviolet light
- measurement
- mercury
- mercury vapor
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Abstract
A cold atomic absorption differential mercury vapor analyzer comprises a frequency stabilized power source, a low-pressure mercury lamp, a colorimetric tube, an ultraviolet light converter and a receiver. A liquid, gas or solid tested for mercury content is fed into the colorimetric tube during measurement, the liquid, gas or solid containing mercury can absorb ultraviolet light so that strength of the ultraviolet light is reduced, measurement signals outputted by the receiver are transmitted to a differential processor controlled by a computer to be converted into differential signals, and the differential processor is connected the computer through an A/D (analog-to-digital) conversion interface. The processed measurement results are transmitted to a display or a printer to be displayed or printed. The cold atomic absorption differential mercury vapor analyzer can be applied to various environment monitoring systems, and to geology, hydrology, tap water, environmental research, enterprise inspection rooms or labs and the like, is used for measuring mercury content in surface water, groundwater and industrial wastewater, further can be used for measuring mercury content in waste gas and solids, accordingly is wide in application range, and has the advantages of simple structure, easiness in implementation, wide measurement range, high in flexibility, vividness in measurement results, fast measurement speed, simplicity in operation and the like.
Description
Technical field
The utility model relates to the improvement of instrument for determining Hg structure, and specifically a kind of cold atom absorbs the differential mercury vapor analyzer, belongs to the environmental protection analytical instrument.
Background technology
At present, the mercury vapor analyzer of widely used employing cold atom absorption process, defective such as exist in various degree that measurement range is narrow, sensitivity is low, measurement result needs further conversion, complicated operation, measuring speed are slow, poor stability, serviceable life are short.
The utility model content
The purpose of this utility model is at above-mentioned deficiency, provides that a kind of measurement range is wide, highly sensitive, intuitive measurement results, measuring speed cold atom fast, easy and simple to handle absorb the differential mercury vapor analyzer.
The technical scheme that realizes the utility model purpose is:
This cold atom absorbs the differential mercury vapor analyzer, comprise by computer-controlled frequency stabilized power source, the low pressure mercury lamp that is connected with frequency stabilized power source, receive the color comparison tube that low pressure mercury lamp emits beam, characteristics are that the ultraviolet light of color comparison tube output is converted to visible light through the ultraviolet light converter, the light signal of ultraviolet light converter output is converted to electric signal through receiver, the receiver output terminal is connected with by computer-controlled differential processor, and the differential processor is connected with computing machine by the A/D translation interface.
In order to show, print measurement result automatically, also can be connected with display or printer on computers.
The utility model is simple in structure, and each parts of complete machine all can be selected general components and parts and electronic circuit in the existing analytical instrument for use according to different measurement requirement, the microcomputer technology that the apolegamy engineering technical personnel know, and adopt conventional technology to make, implement easily.
During use, the sample of liquid, gas or solid is sent in the color comparison tube after by the redox vaporization.During work, the high pressure that is produced certain frequency by computer-controlled frequency stabilized power source is lighted low pressure mercury lamp, and the ultraviolet light that low pressure mercury lamp sends is injected color comparison tube, when containing gaseous mercury in the color comparison tube, will absorb ultraviolet light and reduce the ultraviolet light intensity; The ultraviolet light of color comparison tube output converts visible light to through the ultraviolet light converter, and visible light enters receiver and converts electronic signal to; This electronic signal enters by computer-controlled differential processor and converts measuring-signal to differential signal, enters the A/D translation interface, enters Computer Processing again, and the measurement result after the processing is transported to display or printer, shows or prints measurement result.
The utility model can be applicable to the environmental monitoring system of all departments, and occasions such as geology, the hydrology, tap water, Environmental Studies, each sensing chamber of large and medium-sized enterprise or laboratory.Be used for the measurement of surface water, underground water, industrial waste water mercury content, also can be used for the measurement of mercury content in waste gas and the solid, range of application is very extensive.Have that simple in structure, easy enforcement, measurement range are wide, highly sensitive, advantage such as intuitive measurement results, measuring speed are fast, easy and simple to handle.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
Among the figure: 1 frequency stabilized power source, 2 low pressure mercury lamps, 3 color comparison tubes, 4 ultraviolet light converters, 5 receivers, 6 differential processors, 7A/D translation interface, 8 computing machines, 9 displays and printer.
Embodiment
The utility model is further described with the embodiment that provides below in conjunction with accompanying drawing.
With reference to accompanying drawing, this cold atom absorbs the differential mercury vapor analyzer, and the color comparison tube 3 that is emitted beam by the frequency stabilized power source 1 of computing machine 8 controls, the low pressure mercury lamp 2 that is electrically connected with frequency stabilized power source, reception low pressure mercury lamp constitutes.The 253.7nm ultraviolet light that low pressure mercury lamp sends passes through color comparison tube, the ultraviolet light of color comparison tube output is converted to visible light through ultraviolet light converter 4, the visible light signal of ultraviolet light converter output is converted to electric signal through receiver 5, the receiver output terminal is connected with by computer-controlled differential processor 6, the differential processor is connected with computing machine by A/D translation interface 7, is connected with display and printer 9 on computers.Measurement, data processing, data query, demonstration or print data by the computer control instrument.
The utility model applicant presses embodiment, and the cold atom of implementing the different size model absorbs the differential mercury vapor analyzer.
The on probation demonstration through inside, the 209 type cold atoms of implementing by technical solutions of the utility model absorb the differential mercury vapor analyzer, and measurement range is wide, can reach (0.001-100) μ g/L; Can measure the sample that all contain mercury pollution, operate very simple.Adopt computing machine that the mercury light source is carried out frequency stabilization and follow the tracks of compensation, overcome baseline wander, improved the overall performance of instrument, reduced the use cost of instrument, technical feature is stable.Be applicable to the measurement of underground water, the day water and industrial waste water.Technical indicator reaches: the actual measurement detection limit:＜0.001 μ g/L; Measurement range: (0.001-100) μ g/L; Related coefficient: (0.01-0.16) μ g/L γ＞0.999; Repeatability: the coefficient of variation is no more than 5% (0.2 μ g/L).Highly sensitive, measurement range is wide, favorable reproducibility, the good stability baseline does not almost have the kind of drift, automaticity height, the chemical reagent that uses and consumption is few, use cost is low, is subjected to probationer's favorable comment.
Claims (2)
1. a cold atom absorbs the differential mercury vapor analyzer, comprise by computer-controlled frequency stabilized power source, the low pressure mercury lamp that is connected with frequency stabilized power source, receive the color comparison tube that low pressure mercury lamp emits beam, the ultraviolet light that it is characterized in that color comparison tube output is converted to visible light through the ultraviolet light converter, the light signal of ultraviolet light converter output is converted to electric signal through receiver, the receiver output terminal is connected with by computer-controlled differential processor, and the differential processor is connected with computing machine by the A/D translation interface.
2. cold atom according to claim 1 absorbs the differential mercury vapor analyzer, it is characterized in that being connected with on the computing machine display or printer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020631136XU CN201876416U (en) | 2010-11-24 | 2010-11-24 | Cold atomic absorption differential mercury vapor analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020631136XU CN201876416U (en) | 2010-11-24 | 2010-11-24 | Cold atomic absorption differential mercury vapor analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201876416U true CN201876416U (en) | 2011-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020631136XU Expired - Fee Related CN201876416U (en) | 2010-11-24 | 2010-11-24 | Cold atomic absorption differential mercury vapor analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201876416U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007076A (en) * | 2014-06-06 | 2014-08-27 | 郝俊 | Method for detecting mercury in sewage |
| CN105606550A (en) * | 2016-01-29 | 2016-05-25 | 新疆出入境检验检疫局检验检疫技术中心 | Method for quickly measuring mercury content of edible food packing material |
| CN108896519A (en) * | 2018-05-21 | 2018-11-27 | 南京工程学院 | Double spectrum gas mercury analytical equipments and corresponding method |
-
2010
- 2010-11-24 CN CN201020631136XU patent/CN201876416U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007076A (en) * | 2014-06-06 | 2014-08-27 | 郝俊 | Method for detecting mercury in sewage |
| CN105606550A (en) * | 2016-01-29 | 2016-05-25 | 新疆出入境检验检疫局检验检疫技术中心 | Method for quickly measuring mercury content of edible food packing material |
| CN108896519A (en) * | 2018-05-21 | 2018-11-27 | 南京工程学院 | Double spectrum gas mercury analytical equipments and corresponding method |
| CN108896519B (en) * | 2018-05-21 | 2021-04-27 | 南京工程学院 | Double-spectrum flue gas mercury analysis device and corresponding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20121124 |