CN100446832C - High temperature-resistant and high pressure-resistant pool for solvent extraction - Google Patents
High temperature-resistant and high pressure-resistant pool for solvent extraction Download PDFInfo
- Publication number
- CN100446832C CN100446832C CNB2006100457455A CN200610045745A CN100446832C CN 100446832 C CN100446832 C CN 100446832C CN B2006100457455 A CNB2006100457455 A CN B2006100457455A CN 200610045745 A CN200610045745 A CN 200610045745A CN 100446832 C CN100446832 C CN 100446832C
- Authority
- CN
- China
- Prior art keywords
- seal cover
- pool
- resistant
- extraction
- solvent
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The invention involves sample extraction device, specifically a resistant high temperature and high pressure pool used for solvent extraction, it includes the extraction pool, sealing cover, sealing cover caps, sealing components and other components. The surface of extraction pool is installed with extraction pool positioning bench, the extraction pool end surface of the extraction pool inner is equipped with haunched sealing knife-edge; the sealing cover is installed on the surface of extraction pool and near the sealing cover positioning bench installed on the side of extraction pool, the inner of sealing cover positioning bench is equipped with haunched sealing knife-edge, and the middle of sealing cover is installed with sealing cover guide hole; the ring sealing pads are equipped between the sealing knife-edge and the sealing cover knife-edge; the press cap of sealing cover cap is crimp connected with the outside of sealing cover and connected with the extraction pool screw thread, ball roller thrust bearing is equipped between the sealing cover caps and the sealing cover. The invention has some advantages as: convenient use, low cost and long life, it applies to the extraction pool used for accelerating the solvent extraction.
Description
Technical field
The present invention relates to the sample extraction device, specifically a kind ofly be used for solvent-extracted high temperature-resistant and high pressure-resistant pool, organic extraction in solid or the semi-solid sample under its pressurized conditions that is specially adapted to heat.
Background technology
The sample analysis process comprises that sampling, sample preparation and processing, assay determination, data are handled, final report five parts, the time of finding sample treatment institute palpus by statistics accounts for 61% of The whole analytical process, and the time of assay determination has only accounted for 6%, and the sample preparation time is 10 times of assay determination unexpectedly.So efficiently, the research of the pre-treating method of sample preparation fast and automation has become one of main direction of modern analysis chemical research.The employed sample pre-treatments technology in laboratory is extracted except traditional Soxhlet at present, outside the liquid-liquid extraction, and microwave abstracting, novel extraction technology such as supercritical fluid extraction and accelerated solvent extraction are also ripe gradually.
Soxhlet is extracted the use history in more than 100 year.Cable-styled extraction is that sample is placed movable porous container; Reflux solvent this sleeve pipe that continued to flow, the dissolving measured object is collected extract in the cucurbit continuously.This technology extraction time reaches a few hours usually to a couple of days, and will consume a large amount of organic solvents.
Microwave extraction method has shortened the extraction time owing to being rapidly heated.Describe a kind of microwave drying sample that is used in the United States Patent (USP) (U.S.Pat.No.4,554,132) and can carry out solvent-extracted device in the non-closed container under normal pressure again simultaneously.(L.A.Fernando, W.D.Heavner and C.C.Gabrielli, Anal.Chem., the 58:511-512 (1986) that use closed container are also arranged in the microwave-assisted extraction technique; L.B.Fischer, Anal.Chem., 58:261-263 (1986); H.M.Kingston and L.B.Jassie, Anal.Chem., 58:2534-2541 (1986); R.Rezaaiyan and S.Nikdel, J.ofFood Science, 55:1359-1360 (1990)).These closed containers can bear high temperature and high pressure; Change from 40psi (L.A.Fernando such as the pressure that has that appears in the newspapers, W.D.Heavner and C.C.Gabrielli, Anal.Chem., 58:511-512 (1986)) to 3000psi (W.Lautenschlaeger, Spectroscopy International, 2:18-22 (1990)).These systems are used for dissolving fully or the sample digestion matrix, but will use the solvent of large volume.
Supercritical fluid extraction has also obtained use (P.Capriel, A.Haisch and S.U.Kahn, J.Agric.Food Chem., 34:70-73 (1986) for many years; M.Schnitzer, C.A.Hindle andM.Meglic, Soil Sci.Soc.Am.J., 50:913-919 (1986); M.Schnitzer and C.M.Preston, Soil Sci.Soc.Am.J., 51:639-646 (1987)).It has good extraction to solid and semisolid.Carbon dioxide is the most frequently used supercritical extract agent.Carbon dioxide is heated in a container or pond and is forced into super critical condition and becomes supercritical fluid, and this fluid is forced to be injected in the hole of solid sample matrix and extracts test analyte then.The scope of application of this supercritical fluid technique is very extensive.But because the extracting pressure of supercritical fluid is higher, so equipment cost is higher, and the coefficient of expansion of adding gas is very big, easily produces blast in the process of overcriticalization of gas, so this The Application of Technology is restricted.
Discover, in supercritical fluid, add a small amount of organic solvent, such as 10% or still less, can improve the extracting power of supercritical fluid.It is more much higher than the optimal conditions of single solvent extraction to have added the temperature and pressure that the supercritical fluid of organic solvent keeps in extraction process, and the effect of extraction is far better.
Based on this, develop and a kind of efficient solvent abstraction technique that is used for extracting the organic analysis thing of solid sample.It is that the organic solvent of organic analysis thing and non-water is fully contacted in an abstraction pool that applies HTHP.This process is at United States Patent (USP) U.S.Patent application Ser.No.08/259, detailed description arranged in 667, and is named as " accelerated solvent extraction system ".
Accelerated solvent extraction is to utilize under uniform temperature and pressure, and the specific physical chemical property that solvent had comes solid and semi-solid material are extracted.It is fast that this method has speed, and the solvent use amount is few, advantages such as good reproducibility.
All abstraction techniques above-mentioned all need suitable abstraction pool, this abstraction pool is promptly wanted to allow the solvent inflow and outflow, and favorable sealing property makes extractant can fully contact with analyte again, also require pond body material that good inertia is arranged, not with the component chemically reactive that is extracted.Because these extraction processes usually carry out under the condition of pressurization of heating, this abstraction pool is wanted and can be used under wide temperature and pressure scope.Dai An company (Dionex) has developed a kind of high-temperature and high-pressure resistant extraction pool when exploitation and commercialization accelerated solvent extraction technology, and United States Patent (USP) (U.S.Pat.No.5647976) has been applied in this pond.The shortcoming of United States Patent (USP) (U.S.Pat.No.5647976) is: (1) abstraction pool seal cover structure more complicated, handle fractionation behind the sample cleans and all needs to use specific purpose tool at every turn, the elasticity card is taken out in seal cover, is parts such as the fillet of screw, gasket seal, stainless steel filter then; (2) employing rotatably compresses-hermetically-sealed construction in the design, rotatablely moves between the metal sealing edge of a knife and the gasket seal in the seal process, and the operator will could guarantee that its interlock is intact with very big strength.Sealing gasket uses and will damage for 1-3 time, needs often to change, and use cost is very high; (3) even the sealing edge of a knife has slight damage, gasket seal also can be scratched, and can't finish the high pressure sealing function; (4) termination with abstraction pool is designed to seal the edge of a knife, and without any safeguard measure, in the cleaning and installation process of abstraction pool, because of parts collide mutually or fall, the edge of a knife is easy to be damaged.The abstraction pool of edge of a knife damaged can not be realized high pressure sealing, can only return factory and process again, and price is high; (5) used stainless steel filter size is very big, and is suitable with the abstraction pool internal diameter, but the filter that the filtration of solvent and extraction solution only needs small size very just.Because of the filter price is directly proportional with its area, and often replacing of filter disc, above-mentioned design has increased use cost.
Summary of the invention
At above-mentioned background, the object of the present invention is to provide a kind of solvent-extracted high temperature-resistant and high pressure-resistant pool that is used for, it is a kind of new pond body structure design, can realize treating under the HTHP analytic sample (solid or semisolid) and carry out solvent extraction, its use is easy to operate, cost is low, and the life-span is long, is particularly useful for doing the abstraction pool of accelerated solvent extraction (ASE) device.
For achieving the above object, the technical solution used in the present invention is:
A kind ofly be used for solvent-extracted high temperature-resistant and high pressure-resistant pool, comprise assemblies such as abstraction pool body, seal cover, seal cover pressure cap, gasket seal,
The end face of abstraction pool body is provided with the abstraction pool positioning table, is provided with the sealing edge of a knife of projection on the abstraction pool body end face of abstraction pool positioning table inboard;
Seal cover is arranged on the end face of abstraction pool body, and seal cover is close to the abstraction pool side and is provided with the seal cover positioning table, is provided with the seal cover edge of a knife of projection in seal cover positioning table inboard, is provided with the seal cover guide hole at the middle part of seal cover; Between the sealing edge of a knife and the seal cover edge of a knife, be provided with the ring packing pad;
The seal cover pressure cap is crimped on the seal cover outside, and the seal cover pressure cap is threaded with the abstraction pool body, is provided with ball thrust bearing between seal cover pressure cap and seal cover.
Described seal cover inboard is placed with the stainless steel filter, has the solvent allocation space between filter and seal cover; Described seal cover outer end is provided with guide-localization platform awl groove; The seal cover inside of guide table awl groove lower end is provided with ' O ' circle draw-in groove, and device has ' O ' shape circle in it;
Between seal cover pressure cap and seal cover, be provided with stainless steel ball bearing watt, on ball bearing watt upper surface, be provided with ball positioning groove one, be provided with the ball positioning groove corresponding two in seal cover pressure cap bottom with it, between ball positioning groove one and ball positioning groove two, be placed with ball, constitute described ball thrust bearing; Seal cover pressure cap madial wall below the stainless steel ball bearing watt is provided with the elastic expansion ring draw-in groove, and device has the stainless steel elastic expansion ring in it.
The present invention compares with commercial means with existing design and has the following advantages:
1) simple in structure, dismounting is cleaned easily, without any need for aid;
When 2) rotating pressure cap by hand, seal cover is translation vertically, does not have between the metal edge of a knife and the gasket seal and rotates, and is the sealing that compresses of vertical direction, so gasket seal can repeat repeatedly to use the reduction use cost;
3) when sealing edge of a knife when slight damage is arranged, because of seal process is that the vertical and gasket seal of the edge of a knife compresses, there is not rotation process, still can seal up and tolerate high pressure, sealing gasket still can be reused;
4) increased the design of positioning table 102 in the abstraction pool termination, it has three effects: (a) during assembling and seal cover to mutatis mutandis; (b) the protection sealing edge of a knife 103 is in the cleaning of abstraction pool, install or when falling, can not damage the edge of a knife; (c) sealing gasket 105 contrapositions.
5) area of filter 207 is reduced about 50%, can reduce use cost.
Description of drawings
Fig. 1 is an abstraction pool overall schematic of the present invention;
Fig. 2 is an abstraction pool decomposition texture schematic diagram of the present invention;
Wherein: 100-pond body; 101-pool wall screw thread; 102-abstraction pool positioning table; 103-seals the edge of a knife; 104-pond intracoelomic cavity; The 105-gasket seal; The 200-seal cover; 201-O encloses draw-in groove; 202-seal cover positioning table; The 203-seal cover edge of a knife; 204-ball positioning groove one; 205-seal cover guide hole; 206-guide table awl groove; The 207-filter; 208-solvent allocation space; 209-O shape circle; 210-ball bearing watt; 300-seal cover pressure cap; 301-pressure cap screw thread; 304-ball positioning groove two; The 302-ball; 303-stainless steel elastic expansion ring; 305-elastic expansion ring draw-in groove;
Fig. 3 detects the chromatogram of 16 kinds of polycyclic aromatic hydrocarbons in the atmospheric aerosol samples for adopting the present invention;
Wherein: 1-naphthalene (2mg/L); 2-acenaphthene (4mg/L); 3-acenaphthene (2mg/L); 4-fluorenes (0.4mg/L); 5-phenanthrene (0.2mg/L); 6-anthracene (0.2mg/L); 7-fluoranthene (0.4mg/L); 8-pyrene (0.2mg/L); 9-1,2-benzanthracene (0.2mg/L); 10-bends (0.2mg/L); 11-benzo (b) fluoranthene (0.4mg/L); 12-benzo (k) fluoranthene (0.2mg/L); 13-benzo (a) pyrene (0.2mg/L); The 14-indeno (1,2,3-cd) pyrene (0.2mg/L); 15-dibenzo (a, h) anthracene (0.4mg/L); 16-benzo (g, h, i) north (0.4mg/L); IS1,1-chloronaphthalene (interior mark); IS2,2,4-dinitrotoluene (DNT) (interior mark).
The specific embodiment
Referring to Figure 1 and Figure 2, a kind ofly can under HTHP, carry out solvent-extracted abstraction pool to the organic matter in solid or the semi-solid sample, mainly form by pond body 100, seal cover 200, seal cover pressure cap 300 3 parts.
1) pool wall of abstraction pool body adopts the good stainless steel material seamless steel pipe of inertia to make, and can bear operating pressure 20MPa, 200 ℃ of temperature, and its cavity internal diameter is 5-40mm.
The termination of pond body is inlaid with the sealing edge of a knife 103 of abstraction pool positioning table 102 (it is a locating ring in this example) and pond body end face projection, and locating ring is accurately gone into the position to guarantee seal cover, sealing gasket and pond body; Abstraction pool positioning table 102 is stationary fit with body termination, pond, is cleaning, is assembling in the abstraction pool process, and when colliding even fall the situation generation, 102 pairs of sealings of abstraction pool positioning table this moment edge of a knife 103 shields; The sealing edge of a knife, diameter form the crimping sealing less than the diameter of positioning step with sealing gasket.
2) seal cover is made with stainless steel material, places a slice stainless steel filter in the seal cover, on the lid positioning step with the also bossed sealing edge of a knife in the corresponding position of sealing ring;
When seal cover embedded abstraction pool, the positioning table 202 that covers was aimed at naturally with the abstraction pool positioning table 102 of pond end, and the axle center of assurance seal cover and pond body is concentric, and positioning table 102 guarantees that also gasket seal aims at correct position naturally;
The sealing edge of a knife 203 is arranged on the seal cover step 202, concentric with the sealing edge of a knife 103 on the body termination, pond, be lined with the ring packing pad between two edges of a knife, when pressure cap rotatably compressed, seal cover did not rotate, but the rotation of pressure cap is become translation, compress sealing gasket, guarantee the pressure-resistant seal of seal cover and pond body;
The height of seal cover step 202 is higher than more than the height twice that seals the edge of a knife 203, and purpose is in dismounting seal cover, cleaning and assembling process, prevents to seal edge of a knife damage; There is guide hole 205 to inject and flow out in the middle of the seal cover for solvent;
There is guide-localization platform awl groove 206 the seal cover upper end, when being used for outside solvent conducting joint insertion seal cover realization hydrostatic seal, finds the location automatically accurately.There is ' O ' circle draw-in groove 201 guide table awl groove lower end, and when the coupling hydrostatic seal, ' O ' circle compressive deformation expands, and interior edge compresses with joint and forms sealing, and the right-angle side of outer and groove is along forming sealing.
3) the seal cover pressure cap is used for seal cover and pond body crimping, the seal cover pressure cap is by crimping between ball thrust bearing and the seal cover, make that seal cover is translation vertically in compacted process, avoid the seal cover rotation and sealing gasket is caused damage, can prolong the service life of sealing gasket, and increase the withstand voltage properties at sealing position;
Forming (or installation) in the pressure cap has ball thrust bearing, and the central diameter of ball positioning groove 1 is identical with the central diameter of bearing ball plate rail;
Following ball positioning groove one 204 diameters and the gland internal diameter of ball bearing are adaptive, make it be fitted into the position with elastic expansion ring 303, and bearing is positioned on the pressure cap;
During sealing, the following ball positioning groove 1 of ball bearing contacts with seal cover by ball.When the rotation pressure cap, bearing provides the friction of rolling pressure-bearing between pressure cap and seal cover, make rotatablely moving of pressure cap change into the vertical translation of seal cover.
4) pond body two ends outer wall has helicitic texture 101, cooperates with pressure cap internal thread 301, and the seal cover positioning table 202 on the seal cover cooperates the location with the abstraction pool positioning table 102 of body termination, pond; Sealing between seal cover and the pond body is that the extruding by the pond body sealing edge of a knife 103 and 203 pairs of ball bearings of the seal cover edge of a knife watts 210 realizes that the sealing of bearing between filter disc 207 edges and the seal cover is paid somebody's debt and expected repayment later in sealing simultaneously;
The employed gasket seal 105 of abstraction pool, its heatproof T 〉=200 ℃, withstand voltage 〉=20MPa, can use repeatedly, organic solvent-resistant is difficult for aging; Abstraction pool is installed filter 207, and the thickness of filter is more bigger than the degree of depth of groove, can form a circle slit between its edge and the seal cover; Just in time being pressed on this slit of gasket seal 105 designs, the little distortion behind the back cushion sheet pressurized is with this gap sealing.Make the solvent can only can not be by the slit at edge by filter disc;
Above-mentioned design hand-tight make-up seal cover pressure cap just can satisfy the withstand voltage requirement of sealing.The high workload pressure of this device pond body is 20MPa, 200 ℃ of maximum operating temperatures.
The detection of 16 kinds of polycyclic aromatic hydrocarbons in the sucked solid particulate matter in application examples 1 atmosphere
Adopt abstraction pool molten long-pending for this device of 5mL carries out pressurized liquid extraction to the sucked solid particulate matter in the atmosphere, extractant adopts n-hexane/carrene (9: 1), extracting pressure 10MPa, and extraction temperature is 140 ℃, the extraction time is 10 minutes.Solvent+cleaning solvent after the extraction is total to 10mL passes through N
2Purging is concentrated into 200 μ L, injects capillary gas chromatography (Agilent 6890plus, the U.S.) and detects, and analytical column is a 30m * 0.53mm I.D. * 0.6 μ m quartz capillary column (SE-54, section's branch, Dalian Chemiclophysics Inst., Chinese Academy of Sciences); Pre-column is that 10m * 0.53mm I.D deactivates quartz capillary (section's branch, the Dalian Chemistry and Physics Institute), utilizes to keep the focusing that spacer techniques realizes solute.Pre-column is to be connected with quartzy crimp head with analytical column, flame ionization ditector (FID).Sample introduction adopts the large volume sample injection method, and the chromatography spectrogram is seen Fig. 3.
Environmental contaminants in 2 pairs of soil of application examples carry out pressurized liquid extraction
Adopt 30mL capacity extraction pond.In the pond, add the 8mL quartz sand earlier, load the pedotheque that stacking volume 15-20mL sieved then, use excellent compacting, fill up abstraction pool with quartz sand at last.Solvent adopts n-hexane/acetone (1: 1), extracting pressure 10Mpa, and 100 ℃ of extraction temperature, the extraction time is 10 minutes.Collect extraction liquids 50mL, blow to 2.5mL,, analyze difficult volatilization and thermally labile component with liquid chromatography-mass spectrography then respectively with gas chromatography-mass spectrometry analysis half volatile organic compounds with nitrogen.
Residues of pesticides are carried out pressurized liquid extraction in 3 pairs of corns of application examples
Adopt 20mL capacity extraction pond.Corn sample is broken into the particle of 1-3mm size.In the pond, add the 5mL quartz sand earlier, fill out the corn sample of 15mL stacking volume then, fill up abstraction pool with quartz sand at last.Solvent adopts acetone, extracting pressure 15Mpa, 120 ℃ of extraction temperature.Collect extraction liquids 35mL, blow to 2mL,, analyze difficult volatilization and thermally labile component with liquid chromatography-mass spectrography then respectively with gas chromatography-mass spectrometry analysis half volatile organic compounds with nitrogen.
4 pairs of rock cores of application examples carry out pressurized liquid extraction
The porosity that needs to measure rock core in the petroleum geology probing work.And filled by pitch and heavy hydrocarbon in the hole of rock core.Conventional method is to use soxhlet extraction, is solvent with benzene and toluene.At the 36-90mm rock core, the extraction time is 72 hours to 1 month for diameter.Not only the time is long, and very big to operating personnel's toxic action.Use the pressurized liquid extraction method, extraction pressure 18MPa, 110 ℃ of temperature, extractant is cyclohexane/ethyl acetate (6: 4).Adopt the abstraction pool of internal diameter 40mm, to the rock core extracting twice of 36mm diameter, 30 minutes for the first time, extracted again 10 minutes behind the replacing solvent, can thoroughly extract the organic matter in the rock core hole.Through contrast experiment's test, effect of extracting obviously is better than the result that Soxhlet was extracted 72 hours.
Claims (5)
1. one kind is used for solvent-extracted high temperature-resistant and high pressure-resistant pool, comprises abstraction pool body (100), seal cover (200), seal cover pressure cap (300), gasket seal (105) assembly, it is characterized in that:
The end face of abstraction pool body (100) is provided with abstraction pool positioning table (102), is provided with the sealing edge of a knife (103) of projection on abstraction pool body (100) end face of abstraction pool positioning table (102) inboard;
Seal cover (200) is arranged on the end face of abstraction pool body (100), seal cover (200) is close to abstraction pool body (100) side and is provided with seal cover positioning table (202), be provided with the seal cover edge of a knife (203) of projection in seal cover positioning table (202) inboard, be provided with seal cover guide hole (205) at the middle part of seal cover (200); Between the sealing cutter (103) and the seal cover edge of a knife (203), be provided with ring packing pad (105);
Seal cover pressure cap (300) is crimped on seal cover (200) outside, and seal cover pressure cap (300) is threaded with abstraction pool body (100), is provided with ball thrust bearing between seal cover pressure cap (300) and seal cover (200).
2. according to claim 1ly be used for solvent-extracted high temperature-resistant and high pressure-resistant pool, it is characterized in that: described seal cover (200) inboard is placed with stainless steel filter (207), has solvent allocation space (208) between stainless steel filter (207) and seal cover (200).
3. according to claim 1ly be used for solvent-extracted high temperature-resistant and high pressure-resistant pool, it is characterized in that: described seal cover (200) upper end is provided with guide-localization platform awl groove (206).
4. according to claim 3ly be used for solvent-extracted high temperature-resistant and high pressure-resistant pool, it is characterized in that: seal cover (200) inside of described guide-localization platform awl groove (206) lower end is provided with ' O ' circle draw-in groove (201), and device has ' O ' shape circle (209) in ' O ' the circle draw-in groove (201).
5. according to claim 1ly be used for solvent-extracted high temperature-resistant and high pressure-resistant pool, it is characterized in that: between seal cover pressure cap (300) and seal cover (200), be provided with stainless steel ball bearing watt (210), on stainless steel ball bearing watt (210) upper surface, be provided with ball positioning groove one (204), be provided with the ball positioning groove corresponding two (304) in seal cover pressure cap (300) bottom with it, between ball positioning groove one (204) and ball positioning groove two (304), be placed with ball (302), constitute ball thrust bearing; Seal cover pressure cap (300) madial wall of stainless steel ball bearing watt (210) below is provided with elastic expansion ring draw-in groove (305), and device has stainless steel elastic expansion ring (303) in the elastic expansion ring draw-in groove (305).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100457455A CN100446832C (en) | 2006-01-25 | 2006-01-25 | High temperature-resistant and high pressure-resistant pool for solvent extraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100457455A CN100446832C (en) | 2006-01-25 | 2006-01-25 | High temperature-resistant and high pressure-resistant pool for solvent extraction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101007219A CN101007219A (en) | 2007-08-01 |
| CN100446832C true CN100446832C (en) | 2008-12-31 |
Family
ID=38696019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100457455A Expired - Fee Related CN100446832C (en) | 2006-01-25 | 2006-01-25 | High temperature-resistant and high pressure-resistant pool for solvent extraction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100446832C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101468261B (en) * | 2008-09-02 | 2010-12-08 | 北京吉天仪器有限公司 | High-temperature and high-pressure resistant extraction pool |
| CN102218226A (en) * | 2011-04-20 | 2011-10-19 | 四川大学 | High efficiency liquid counter-current chromatographic preparation technology |
| CN104235365A (en) * | 2014-07-18 | 2014-12-24 | 安徽荃富信息科技有限公司 | High-vacuum high-temperature-resistant locking mechanism |
| CN105107224A (en) * | 2015-09-13 | 2015-12-02 | 上海华之光谱仪器有限公司 | Auto-collimation centering high-temperature high-pressure extraction pool sealing structure |
| CN112843782B (en) * | 2021-01-21 | 2022-08-23 | 天津市生态环境监测中心 | Extraction and filtration method for extracting target object in solid sample |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994020852A1 (en) * | 1993-03-03 | 1994-09-15 | Johnson Robert S | Automatic filtration and extraction device and method |
| JPH08332303A (en) * | 1995-06-08 | 1996-12-17 | Buechi Lab Tech Ag | Soxhlet extractor for solid-liquid extraction |
| JPH08338832A (en) * | 1995-02-02 | 1996-12-24 | Isco Inc | Extraction method of supercritical fluid as well as apparatus and method for liquid chromatography |
| US5647976A (en) * | 1995-03-03 | 1997-07-15 | Dionex Corporation | High pressure and temperature cell for solvent extraction |
| US6083399A (en) * | 1990-07-13 | 2000-07-04 | Isco, Inc. | Apparatus and method for supercritical fluid extraction |
| CN2408938Y (en) * | 2000-02-18 | 2000-12-06 | 陈葆华 | Supercritical CO2 extracting pot |
| CN2441536Y (en) * | 2000-06-09 | 2001-08-08 | 黑龙江中植东林生态科技股份有限公司 | Over critical extractor |
-
2006
- 2006-01-25 CN CNB2006100457455A patent/CN100446832C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6083399A (en) * | 1990-07-13 | 2000-07-04 | Isco, Inc. | Apparatus and method for supercritical fluid extraction |
| WO1994020852A1 (en) * | 1993-03-03 | 1994-09-15 | Johnson Robert S | Automatic filtration and extraction device and method |
| JPH08338832A (en) * | 1995-02-02 | 1996-12-24 | Isco Inc | Extraction method of supercritical fluid as well as apparatus and method for liquid chromatography |
| US5647976A (en) * | 1995-03-03 | 1997-07-15 | Dionex Corporation | High pressure and temperature cell for solvent extraction |
| JPH08332303A (en) * | 1995-06-08 | 1996-12-17 | Buechi Lab Tech Ag | Soxhlet extractor for solid-liquid extraction |
| CN2408938Y (en) * | 2000-02-18 | 2000-12-06 | 陈葆华 | Supercritical CO2 extracting pot |
| CN2441536Y (en) * | 2000-06-09 | 2001-08-08 | 黑龙江中植东林生态科技股份有限公司 | Over critical extractor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101007219A (en) | 2007-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100446832C (en) | High temperature-resistant and high pressure-resistant pool for solvent extraction | |
| Hawthorne et al. | Extraction of organic pollutants from environmental solids with sub-and supercritical water | |
| Yang et al. | Combined temperature/modifier effects on supercritical CO2 extraction efficiencies of polycyclic aromatic hydrocarbons from environmental samples | |
| Hawthorne et al. | Directly coupled supercritical fluid extraction—gas chromatographic analysis of polycyclic aromatic hydro-carbons and polychlorinated biphenyls from environmental solids | |
| Hawthorne et al. | Direct comparison of Soxhlet and low-and high-temperature supercritical CO2 extraction efficiencies of organics from environmental solids | |
| Li et al. | On-line coupling of subcritical water extraction with high-performance liquid chromatography via solid-phase trapping | |
| Campbell et al. | Supercritical fluid fractionation of petroleum-and coal-derived mixtures | |
| CN100525875C (en) | Sleeve type high-temperature and high-pressure resistant extracting pool and external member used for solvent extraction | |
| CN101318084B (en) | High voltage pool for heating solvent extraction | |
| CN108801686A (en) | A kind of efficient soil sampling apparatus | |
| CN102410946A (en) | Device for extracting organic matters from soil and using method thereof | |
| CN101462010B (en) | Bundling capillary pipe solid phase micro-extraction device | |
| Bøwadt et al. | Field-portable determination of polychlorinated biphenyls and polynuclear aromatic hydrocarbons in soil using supercritical fluid extraction | |
| Andersson et al. | Pressurised hot water extraction and thermal desorption of polycyclic aromatic hydrocarbons from sediment with use of a novel extraction vessel | |
| CN101021513A (en) | Apparatus for collecting and quantifying gas and light hydrocarbon constituent in golden sample tube and using method | |
| CN203053764U (en) | Collection device of light hydrocarbon component in rock sample | |
| Wang et al. | Design for on-line coupling of supercritical fluid extraction with liquid chromatography: Quantitative analysis of polynuclear aromatic hydrocarbons in a solid matrix | |
| Pyle et al. | Supercritical fluid extraction of high sulfur soils, with use of a copper scavenger | |
| Yan et al. | Molecular characterization of soluble components in the lignite by sequential solvent extraction via continuously reducing particle size | |
| Kado et al. | Integrated supercritical fluid extraction, bioassay and chemical screening methods for analyzing vapor-phase compounds of an environmental complex mixture: diesel exhaust | |
| CN1223839C (en) | Rock sealing hydrocarbon extraction instrument | |
| Wright et al. | Evaluation of a Field-Portable Supercritical Fluid Extraction Apparatus for Rapid Characterization of Contaminated Soils | |
| Claessens et al. | Comparison of extraction methods for the determination of polycyclic aromatic hydrocarbons in soot samples | |
| CN205080098U (en) | Autophragm carbon nanotube solid -phase extraction pillar | |
| Burford et al. | Directly coupled (on-line) SFE-GC: instrumentation and applications |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20081231 Termination date: 20120125 |