CN103091387A - Solid sample rapid thermal desorption mass spectrometry sampling device - Google Patents
Solid sample rapid thermal desorption mass spectrometry sampling device Download PDFInfo
- Publication number
- CN103091387A CN103091387A CN201110342099XA CN201110342099A CN103091387A CN 103091387 A CN103091387 A CN 103091387A CN 201110342099X A CN201110342099X A CN 201110342099XA CN 201110342099 A CN201110342099 A CN 201110342099A CN 103091387 A CN103091387 A CN 103091387A
- Authority
- CN
- China
- Prior art keywords
- gib screw
- metal tube
- metal block
- heatable
- quartz capillary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a solid sample rapid thermal desorption mass spectrometry sampling device. The device conducts rapid thermal desorption on the solid sample by a thermal desorption chamber; and under the effect of pressure difference, thermal decomposition products enter into the mass spectrometry for analysis through an insulation transmission system. A high-temperature filter cloth is arranged at an outlet of the thermal desorption chamber and used to filter out particles with size larger than 50 mum, so as to ensure normal working of mass spectrometry. A quartz capillary and a three-way valve form a sample transmission system; the quartz capillary is used for transmission of the thermal desorption products; and the three-way valve is used to control starting and ending of sampling. The device provided by the invention can be combined with mass spectrometry to test thermal desorption products of the solid sample, and monitor the thermal desorption process of the solid sample, wherein no memory effect is generated in the process of analysis.
Description
The invention belongs to mass spectrometer, relate to a kind of solid sample Rapid Thermal and resolve the mass spectrum sampling device, designed hot Resolution Room carries out Rapid Thermal to solid sample resolves, and pyrolysis division thing enters mass spectrum by T-valve and carries out express-analysis with the form of the gas quartz capillary through heat tracing.
Background technology
Along with industrial expansion, problem of environmental pollution is more and more serious, is mainly manifested in the aspects such as atmosphere, water quality and soil pollution.Wherein the method for gas and fluid sample pre-treatment has had development faster, and is relatively less for the pre-treating method of solid sample.The pollution of solid sample mainly comes from discharging and the solid waste of sewage, the organic adsorption foulings such as the present volatility of multilist and palycyclic aromatic, and it pollutes and distributes extensively, the contamination hazard longer duration, and sample size is large.Therefore, delicately solid sample analysis is become rapidly, an important directions of environmental analysis.
The organic pollutant that solid sample in environment adsorbs can at high temperature volatilize and discharge, and then analyzes.Pyrolysis analyses-and gas chromatography has been used to the analysis of solid sample.Its method is: solid sample is in higher temperature in the chamber is analysed in pyrolysis, and the organic contaminant that adsorbs discharges, and enters into gas chromatography analysis under the effect of carrier gas.The amount that solid sample is analysed in pyrolysis needs enough less, guarantee that the organic contaminant that discharges has narrower chromatogram sample introduction width, thereby obtain higher resolution, so the sensitivity of this analytical approach has certain restriction.Another kind method is: at first solid sample is carried out pyrolysis and analyse, then pyrolysis is analysed the organic contaminant that discharges by the Trap material enrichment under low temperature, at last the Trap material is carried out the quick release that Fast Heating is completed organic pollutant, make it enter into gas chromatography analysis with narrower sample introduction width.This analytical approach, because comprised the step of " pyrolysis is analysed-low temperature Trap enrichment-Rapid Thermal parsing ", although raising has been arranged on sensitivity for analysis, also lengthen its required analysis time.
Flight time mass spectrum has express-analysis speed, macroion transfer rate, high sensitivity, the high-quality of Microsecond grade and measures precision and high resolving power, and single pass namely gets the advantage of spectrum entirely.Simultaneously, the sample introduction of flight time mass spectrum need not a sample introduction, can carry out continuous sample introduction to sample, has reduced the pre-treatment requirement to sample feeding, can complete high sample air inflow.Flight time mass spectrum is in conjunction with can directly obtaining organic molecular ion peak in the resulting mass spectrogram of vacuum UV lamp soft ionization technology, and spectrogram is simple, therefore can carry out qualitative and quantitative analysis rapidly to organic pollutant.
Rapid Thermal is resolved technology and flight time mass spectrum coupling, can suitably increase sample size, thereby obtain higher sensitivity in the short period of time; Simultaneously, utilize the characteristics of flight time mass spectrum express-analysis, can complete the monitoring that process is analysed in pyrolysis to solid sample.
Summary of the invention:
The object of the present invention is to provide a kind of solid sample Rapid Thermal to resolve the mass spectrum sampling device, its effect is the solid sample in environment to be carried out Rapid Thermal resolve, the organic contaminant that discharges enters into mass spectrum analysis through the transmission of insulation quartz capillary by T-valve.Solid sample is short analysis time, and is highly sensitive, memory-less effect.
For achieving the above object, the technical solution used in the present invention is:
A kind of solid sample Rapid Thermal is resolved the mass spectrum sampling device, and it has mainly comprised heating rod, temperature thermocouple, heatable metal block, high heat filter fabric, quartz capillary, metal tube, heating tape and T-valve etc.; The quartz capillary outside is arranged with metal tube, the two ends of metal tube be respectively equipped with a hollow, with externally threaded metal tube gib screw, vacancy during metal tube extend in the metal tube gib screw; Two with externally threaded gib screw, the perforate of gib screw upper center, and internal surface of hole is provided with internal thread, and the metal tube gib screw at metal tube two ends is screwed together in respectively in the hole of two gib screws; The blind hole that heatable metal block inside offers is hot Resolution Room; Heating rod and temperature thermocouple are fixed by the aperture on heatable metal block; The openend of the blind hole in heatable metal block is screwed with the heatable metal block nut by fluorine O circle (bag fluorine O shape circle) sealing, the upper surface middle part of heatable metal block nut is connected with a tubular fixed leg with internal thread, is screwed with a gib screw in the hollow fixed leg; The middle part of heatable metal block nut and gib screw arranges porose corresponding to metal tube gib screw hollow, quartz capillary stretches in hot Resolution Room through gib screw and heatable metal block nut successively, and the exit of quartz capillary is provided with high heat filter fabric in hot Resolution Room; Often open interface and be connected for one of another gib screw of the metal tube other end and T-valve; Another two interfaces of T-valve are connected with vacuum pump with the mass spectrum ionized region respectively.
Described heatable metal block is fixed with respectively heating rod and temperature thermocouple by aperture, and heating rod is 1～4, and general power is 100～400w, and in order to heatable metal block is carried out Fast Heating, the temperature of heatable metal block is that room temperature to 350 is ℃ controlled.The blind hole at the middle part of heatable metal block is hot Resolution Room, and in order to the placement of fixed sample, diameter is 5～20mm, and the diameter of hot Resolution Room and length can change according to the amount of analysis of solid sample.
Described heatable metal block nut, be used for heatable metal block in the openend of blind hole be screwed together, the side that itself and heatable metal block are screwed together has high heat filter fabric, when its role is to pyrolysis division thing by high heat filter fabric, high heat filter fabric can the solid particulate matter of filtering particle diameter more than 50 μ m, thereby guarantee mass spectral:mass spectrographic normal operation.
The two ends of described quartz capillary are passed respectively silicagel pad and are fixed sealing, and one end through-silicon rubber cushion extends to a side of high heat filter fabric, and the other end is connected with the interface of often opening of T-valve.Silicagel pad is used for the fixing seal of quartz capillary, guarantees that the pyrolysis division thing of solid sample does not exchange with the external world, is easy to simultaneously guarantee mass spectral:mass spectrographic working vacuum degree.Can regulate mass spectral:mass spectrographic vacuum tightness by the internal diameter and the length that change quartz capillary, the quartz capillary internal diameter is Φ 50～100 μ m, and length is 5～200cm.
There is metal tube the outside of quartz capillary, and the two ends of metal tube are fixed by the metal tube gib screw respectively, and quartz capillary is in vacancy in metal tube.Metal tube is in order to facilitating wrapping of heating tape, and prevents fractureing of quartz capillary.The internal diameter of metal tube is 0.5～2mm, and length and quartz capillary length are complementary.
The interface of often opening of described T-valve is connected with metal tube with quartz capillary, and another two end interfaces are connected with vacuum pump with the mass spectrum ionized region respectively, is used for completing the sample introduction of sample and finding time.When T-valve often open interface and the conducting of mass spectrum ionized region the time, solid sample pyrolysis division thing can enter the mass spectrum ionized region through T-valve; When often the opening interface and be connected with vacuum pump of T-valve, solid sample pyrolysis division thing is taken away by vacuum pump, can be used for residual gas and removes.
The tubular fixed leg outside surface of metal tube, metal tube gib screw, gib screw and heatable metal block nut is enclosed with the heating tape, and its temperature is controlled at 100～350 ℃; The outer wrap of T-valve has the heating tape, and the temperature of T-valve is controlled at 50～150 ℃.Insulation on the sampling device transmission line is conducive to the fast sample of pyrolysis division thing, reduces residually, eliminates memory effect.
The present invention analyses indoor solid sample and carries out Rapid Thermal and resolve putting into pyrolysis, and high heat filter fabric is in order to the solid particulate matter of filtering particle diameter more than 50 μ m, and pyrolysis division thing enters the mass spectrum ionized region with gas form through quartz capillary and T-valve.When carrying out sample analysis, T-valve will often be opened interface and the interface conducting of leading to the mass spectrum ionized region, in order to complete the mass spectrum sample introduction of gaseous sample; After sample analysis was completed, switch three-way valve was interfaced to the vacuum pump bleeding point, hot Resolution Room and whole transmission line was vacuumized to reduce sample residual, eliminated memory effect.This device is suitable for the Rapid Thermal of solid sample resolves, and analyzes through mass spectrum, will be widely used aspect the solid sample analysis.
Description of drawings:
Fig. 1 is that solid sample Rapid Thermal of the present invention is resolved the mass spectrum sampling device.
Embodiment:
The present invention is used for the Rapid Thermal of solid sample and resolves, and pyrolysis division thing carries out mass spectrophotometry transfer to mass spectrum ionized region 15 in insulation quartz capillary 9 in.
As shown in Figure 1, heatable metal block 3 is the rectangular parallelepiped of 25mm * 25mm * 500mm, heating rod 1 and temperature thermocouple 2 that 4 heating powers are 100w are fixed in heatable metal block 3 by aperture, the blind hole of heatable metal block 3 inside is hot Resolution Room 4, internal diameter is 15mm, length is 40mm, in order to place solid sample.Heating rod 1 heats heatable metal block 3 fast, makes hot Resolution Room 4 interior solid samples carry out pyrolysis rapidly and analyses.
Screw togather sealing by fluorine O circle 5 between heatable metal block 3 and heatable metal block nut 6, guarantee that the organic contaminant that discharges does not exchange with the external world, enters into mass spectrum analysis.Heatable metal block nut 6 is equipped with high heat filter fabric 7 near hot Resolution Room 4 one sides, in order to the solid particulate matter of filtering particle diameter size more than 50 μ m.
Quartz capillary 9 is in order to the transmission of pyrolysis division thing, and internal diameter is 150 μ m, and the one end stretches in hot Resolution Room 4 through gib screw 10, silicagel pad 8 and heatable metal block nut 6 successively, and its exit is high heat filter fabric 7; The other end leads to T-valve 14 through gib screw 10, silicagel pad 8.Silicagel pad 8 compresses by gib screw 10, and the junction of quartz capillary 9 and silicagel pad 8 is sealed.There is metal tube 12 outside of quartz capillary 9, and the both sides of metal tube 12 are connected with the interface of often opening of heatable metal block nut 6 and T-valve 14 respectively by metal tube gib screw 11.The internal diameter of metal tube 12 is 0.8mm, and external diameter is 2mm.Metal tube 12 peripheries are enclosed with heating tape 13, and keeping metal tube 12 hop temperature is 200 ℃.
The interface of often opening of T-valve 14 is connected with an end of quartz capillary 9 and metal tube 12, and another two interfaces of T-valve are connected with vacuum pump 16 with mass spectrum ionized region 15 respectively.T-valve 14 peripheries are enclosed with heating tape 13, and the temperature of keeping T-valve 14 is 100 ℃.
In practical operation, at first, appropriate solid sample is positioned in hot Resolution Room 4, and heatable metal block 3 is connected with heatable metal block nut 6, realizes that sealing screws togather link, and the interface of often opening of T-valve 14 is switched to and 15 conductings of mass spectrum ionized region.1 pair of heatable metal block of heating rod 3 is carried out Fast Heating, completes the pyrolysis of solid sample and analyses, and pyrolysis division thing passes high heat filter fabric 7, and the quartz capillary 9 through being incubated transfers to T-valve 14, enters into mass spectrum ionized region 15 and carries out mass spectrophotometry.When pyrolysis analyse complete after, the interface of often opening of switch three-way valve 14 is connected with vacuum pump 16, hot Resolution Room 4 and quartz capillary 9 is vacuumized, to eliminate memory effect.
Claims (7)
1. a solid sample Rapid Thermal is resolved the mass spectrum sampling device, it is characterized in that: comprise hot Resolution Room (4), quartz capillary (9) and T-valve (14);
Quartz capillary (9) outside is arranged with metal tube (12), the two ends of metal tube (12) be respectively equipped with a hollow, with externally threaded metal tube gib screw (11), vacancy during metal tube (12) extend in metal tube gib screw (11);
Two with externally threaded gib screw (10), gib screw (10) upper center perforate, internal surface of hole is provided with internal thread, and the metal tube gib screw (11) at metal tube (12) two ends is screwed together in respectively in the hole of two gib screws (10);
Offer blind hole in heatable metal block (3) inside, blind hole is hot Resolution Room (4); Open aperture on heatable metal block (3), heating rod (1) is fixed in the aperture of heatable metal block (3);
The openend of the blind hole in heatable metal block (3) is screwed with heatable metal block nut (6) by fluorine O circle (5) sealing, the upper surface middle part of heatable metal block nut (6) is connected with a tubular fixed leg with internal thread, is screwed with a gib screw (10) in the hollow fixed leg; Middle part in heatable metal block nut (6) and gib screw (10) arranges porose corresponding to metal tube gib screw (11) hollow, quartz capillary (9) stretches in hot Resolution Room (4) through gib screw (10) and heatable metal block nut (6) successively, and the exit of quartz capillary (9) is provided with high heat filter fabric (7) in hot Resolution Room (4);
Often open interface and be connected for one of another gib screw (10) of the metal tube other end and T-valve (14); Another two interfaces of T-valve (14) are connected with vacuum pump (16) with mass spectrum ionized region (15) respectively.
2. sampling device according to claim 1, it is characterized in that: the tubular fixed leg outside surface in metal tube (12), metal tube gib screw (11), gib screw (10) and heatable metal block nut (6) is enclosed with heating tape (13).
3. sampling device according to claim 1 and 2, it is characterized in that: the outside surface in T-valve is enclosed with heating tape (13).
4. sampling device according to claim 1 is characterized in that:
Metal tube (12) both sides are often opened interface with heatable metal block nut (6) with T-valve (14) by metal tube gib screw (11) respectively and are connected;
One side of heatable metal block nut (6) is mounted with high heat filter fabric (7); Be provided with silicagel pad (8) between heatable metal block nut (6) and gib screw (10), quartz capillary (9) is set in metal tube (12), be fixed by silicagel pad (8), one end extends to high heat filter fabric (7) one sides, and the other end is connected with the interface of often opening of T-valve (14).
5. sampling device according to claim 1, is characterized in that: open aperture on heatable metal block (3), be provided with temperature thermocouple (2) in aperture; The blind hole at the middle part of heatable metal block (3) is circular, and diameter is 5～20mm.
6. sampling device according to claim 1, it is characterized in that: high heat filter fabric (7) is placed in the side that heating of metal nut (6) is connected with hot Resolution Room (4); High heat filter fabric (7) one sides and hot Resolution Room (4) join, and quartz capillary (9) is placed in high heat filter fabric (7) opposite side.
7. sampling device according to claim 1 is characterized in that:
Be connected with a tubular fixed leg with internal thread in the upper interface that is connected with gib screw (10) of T-valve (14), be provided with silicagel pad (8) in the tubular fixed leg, gib screw (10) is screwed together in the hollow fixed leg;
The two ends of quartz capillary (9) are passed respectively silicagel pad (8) and are fixed sealing, one end through-silicon rubber cushion (8) extends to a side of high heat filter fabric (7), silicagel pad (8) is connected with heating of metal nut (6) by gib screw (10), and the other end through-silicon rubber cushion (8) of quartz capillary (9) extends to often opening in interface of T-valve (13); The quartz capillary internal diameter is Φ 50～100 μ m, and length is 5～200cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110342099XA CN103091387A (en) | 2011-11-02 | 2011-11-02 | Solid sample rapid thermal desorption mass spectrometry sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110342099XA CN103091387A (en) | 2011-11-02 | 2011-11-02 | Solid sample rapid thermal desorption mass spectrometry sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103091387A true CN103091387A (en) | 2013-05-08 |
Family
ID=48204214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110342099XA Pending CN103091387A (en) | 2011-11-02 | 2011-11-02 | Solid sample rapid thermal desorption mass spectrometry sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103091387A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528861A (en) * | 2013-11-01 | 2014-01-22 | 重庆大学 | SF6 gas overheating decomposition gas sample collecting device and application method thereof |
| CN105203357A (en) * | 2014-06-18 | 2015-12-30 | 中国科学院大连化学物理研究所 | Online membrane sample-entering device for ion mobility spectrometry |
| CN105717188A (en) * | 2014-12-05 | 2016-06-29 | 中国科学院大连化学物理研究所 | Device capable of quickly heating liquid sample |
| CN108802161A (en) * | 2017-05-04 | 2018-11-13 | 瑞湾科技（珠海）有限公司 | A kind of method and apparatus of mass spectrum Thermal desorption sample introduction |
| CN109425648A (en) * | 2017-08-28 | 2019-03-05 | 瑞湾科技（珠海）有限公司 | A kind of sample analysis method and device of fast pyrogenation analysis sample introduction |
| CN110600359A (en) * | 2019-09-20 | 2019-12-20 | 上海交通大学 | Pyrolysis device, and detection assembly and detection method for primary pyrolysis product |
| CN111141858A (en) * | 2018-11-06 | 2020-05-12 | 中国科学院大连化学物理研究所 | Device of thermal analyzer interface |
| WO2020156272A1 (en) * | 2019-01-28 | 2020-08-06 | 哈尔滨工业大学（威海） | Microplastic detection device and method based on pyrolysis-mass spectrometry technology |
| CN112798676A (en) * | 2020-12-01 | 2021-05-14 | 广西电网有限责任公司电力科学研究院 | Detect SF6Micro thermal analysis device and method for decomposition product |
| CN113189458A (en) * | 2021-04-28 | 2021-07-30 | 中国烟草总公司郑州烟草研究院 | Ultrasonic atomization corona discharge mass spectrum device for researching droplet interface reaction |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2655239Y (en) * | 2003-11-20 | 2004-11-10 | 复旦大学 | Program temp rising gasifying solid sample feeding device |
| CN1707259A (en) * | 2004-06-04 | 2005-12-14 | 中国科学院大连化学物理研究所 | Apparatus used for solid absorption stirrer thermal analyzer |
| CN1721850A (en) * | 2004-07-14 | 2006-01-18 | 中国科学院大连化学物理研究所 | A kind of solid phase extraction sample bottle and thermal analysis apparatus |
| CN101713761A (en) * | 2008-10-06 | 2010-05-26 | 中国科学院大连化学物理研究所 | Sampling device used for analyzing polyaromatic hydrocarbon samples at real time in on-line mass spectrum |
| CN102103126A (en) * | 2009-12-16 | 2011-06-22 | 中国科学院大连化学物理研究所 | On-line continuous detection sample injector for mass spectrometer and application thereof |
-
2011
- 2011-11-02 CN CN201110342099XA patent/CN103091387A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2655239Y (en) * | 2003-11-20 | 2004-11-10 | 复旦大学 | Program temp rising gasifying solid sample feeding device |
| CN1707259A (en) * | 2004-06-04 | 2005-12-14 | 中国科学院大连化学物理研究所 | Apparatus used for solid absorption stirrer thermal analyzer |
| CN1721850A (en) * | 2004-07-14 | 2006-01-18 | 中国科学院大连化学物理研究所 | A kind of solid phase extraction sample bottle and thermal analysis apparatus |
| CN101713761A (en) * | 2008-10-06 | 2010-05-26 | 中国科学院大连化学物理研究所 | Sampling device used for analyzing polyaromatic hydrocarbon samples at real time in on-line mass spectrum |
| CN102103126A (en) * | 2009-12-16 | 2011-06-22 | 中国科学院大连化学物理研究所 | On-line continuous detection sample injector for mass spectrometer and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 崔华鹏等: "搅拌棒萃取-中等气压飞行时间质谱技术检测水中有机污染物", 《第六届全国环境化学大学环境监测及毒理》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528861A (en) * | 2013-11-01 | 2014-01-22 | 重庆大学 | SF6 gas overheating decomposition gas sample collecting device and application method thereof |
| CN105203357A (en) * | 2014-06-18 | 2015-12-30 | 中国科学院大连化学物理研究所 | Online membrane sample-entering device for ion mobility spectrometry |
| CN105717188A (en) * | 2014-12-05 | 2016-06-29 | 中国科学院大连化学物理研究所 | Device capable of quickly heating liquid sample |
| CN108802161A (en) * | 2017-05-04 | 2018-11-13 | 瑞湾科技（珠海）有限公司 | A kind of method and apparatus of mass spectrum Thermal desorption sample introduction |
| CN109425648A (en) * | 2017-08-28 | 2019-03-05 | 瑞湾科技（珠海）有限公司 | A kind of sample analysis method and device of fast pyrogenation analysis sample introduction |
| CN109425648B (en) * | 2017-08-28 | 2022-05-24 | 瑞湾科技（珠海）有限公司 | Sample analysis method and device for rapid thermal desorption sample injection |
| CN111141858A (en) * | 2018-11-06 | 2020-05-12 | 中国科学院大连化学物理研究所 | Device of thermal analyzer interface |
| WO2020156272A1 (en) * | 2019-01-28 | 2020-08-06 | 哈尔滨工业大学（威海） | Microplastic detection device and method based on pyrolysis-mass spectrometry technology |
| CN110600359A (en) * | 2019-09-20 | 2019-12-20 | 上海交通大学 | Pyrolysis device, and detection assembly and detection method for primary pyrolysis product |
| CN112798676A (en) * | 2020-12-01 | 2021-05-14 | 广西电网有限责任公司电力科学研究院 | Detect SF6Micro thermal analysis device and method for decomposition product |
| CN113189458A (en) * | 2021-04-28 | 2021-07-30 | 中国烟草总公司郑州烟草研究院 | Ultrasonic atomization corona discharge mass spectrum device for researching droplet interface reaction |
| CN113189458B (en) * | 2021-04-28 | 2024-04-30 | 中国烟草总公司郑州烟草研究院 | Ultrasonic atomization corona discharge mass spectrum device for researching liquid drop interface reaction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103091387A (en) | Solid sample rapid thermal desorption mass spectrometry sampling device | |
| CN109870341A (en) | Volatile organic matter original position cold-trap enrichment-Thermal desorption sample pretreatment device | |
| CN107561151B (en) | Quick pesticide residue detector based on mass spectrometry technology | |
| CN101294936B (en) | Plant source volatile organic matter test method | |
| US8833140B2 (en) | Optically heated analyte desorber for gas chromatography analysis | |
| JP2019120702A (en) | Sample collection absorber, heat desorption cavity device, sample collection device, and analyzer | |
| CN102062767A (en) | Online sampling, enriching, thermal desorption and chromatographic sample injection device combined device for atmospheric sample | |
| JP2010112761A5 (en) | ||
| CN203534972U (en) | Atomic emission spectrum analysis device based on electric heating evaporation-dielectric barrier discharge | |
| CN104950065B (en) | A kind of whole smoke trapping and on-line analysis apparatus and method | |
| Yuan et al. | An effective analytical system based on a pulsed direct current microplasma source for ultra-trace mercury determination using gold amalgamation cold vapor atomic emission spectrometry | |
| CN102478543A (en) | Sample introduction apparatus for ion mobility spectrometry | |
| CN106872552A (en) | A kind of absorption-thermal desorption sampling device for full automatic two-way switching in on-line mass spectroscopy | |
| Agrios et al. | Online coupling of pure O2 thermo-optical methods–14C AMS for source apportionment of carbonaceous aerosols | |
| CN110579564B (en) | Device and method for simultaneously measuring mercury, cadmium, zinc and lead | |
| JPH04274728A (en) | Method and apparatus for preliminary enrichment for analyzing minute amount of component in gas | |
| CN215339692U (en) | Novel portable gas chromatography mass spectrometer | |
| CN108802161A (en) | A kind of method and apparatus of mass spectrum Thermal desorption sample introduction | |
| CN204789503U (en) | Full flue gas entrapment and online analysis device | |
| CN104849113B (en) | The sample treatment of microwave igniting Oxygen bottle combustion | |
| CN106324074A (en) | Atmospheric pressure photoionization mass spectrum device for analyzing solid fuel pyrolysis on line | |
| CN206848219U (en) | A kind of gas chromatograph | |
| CN105719934A (en) | Double film sample introduction apparatus | |
| CN109900777B (en) | Device for rapidly analyzing gas components of combustion products of materials on line and application | |
| CN112798676A (en) | Detect SF6Micro thermal analysis device and method for decomposition product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130508 |