CN201862288U - Portable mixing-rod absorption and extraction device - Google Patents
Portable mixing-rod absorption and extraction device Download PDFInfo
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- CN201862288U CN201862288U CN2010206199374U CN201020619937U CN201862288U CN 201862288 U CN201862288 U CN 201862288U CN 2010206199374 U CN2010206199374 U CN 2010206199374U CN 201020619937 U CN201020619937 U CN 201020619937U CN 201862288 U CN201862288 U CN 201862288U
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Abstract
The utility model relates to a portable mixing-rod absorption and extraction device, which comprises an electric mixer. The electric mixer comprises a motor and a mixing shaft driven by the motor; and the mixing shaft is coupled with a coated mixing rod. The mixing rod is easy to install, remove and replace. The device can substitute the ordinary magnetic mixer to be applied in mixing-rod absorption, extraction and analysis in laboratories, but also can be applied in onsite sampling and extraction (such as environmental water samples, air samples and the like). In addition, the device can adopt a pre-emptying or immersion type extraction mode according to actual analysis requirements. The device has a simple structure and a low cost, and is easy to operate. The operating cost of the device is low. Compared with the conventional mixing, absorption and extraction device, the mixing rod cannot be directly contacted with the bottom of an extraction bottle, the coating can be prevented from frictional losses, and the service life of the coating can be greatly prolonged.
Description
Technical field
The utility model relates to a kind of portable Stir Bar Sorptive Extraction device, belongs to analytical chemistry, sample pre-treatments technical field.
Background technology
A complete sample analysis process roughly can be divided into sample collecting and storage, pre-treatment, assay determination, data processing and result and report 4 steps.Wherein sample collecting stores and pre-treatment is two the most key in analytic process steps, also is time-consuming step the most, accounts for 67% of whole analysis time, and they have determined the efficient of The whole analytical process.When measuring a certain component, except sampling, largest error source is in the sample pretreatment process, so suitable sample collecting method and preprocessing process are the preconditions that obtains accurate analytical results in the analytic process.At present, in ambient water and air pollutants monitoring, the most frequently used method is behind the spot sampling sample to be taken back the laboratory to carry out follow-up preliminary treatment and analyzing and testing, but sample collecting, storage and transportation may cause the loss and the pollution of determinand.If sample collecting storage and pre-treatment step can be combined, the realization sampling is carried out simultaneously with pre-treatment, will effectively shorten analysis time, reduces analytical error.On-the-spot, original position sampling that at present more existing sample pre-treatments technology based on the SPE principle have realized, as micro-column spot sampling (Microcolumn field sampling, MFS) and solid phase micro-extraction technique (Solid phase microextraction, SPME) etc.But, in the microtrabeculae spot sampling, need carry alternating current generator to guarantee the supply of electric power of peristaltic pump; The extracting fiber of SPME is relatively more fragile, fractures easily in the use, and costs an arm and a leg.Stir Bar Sorptive Extraction technology (Stir bar sorptive extraction, SBSE) be development and come on the basis of SPME, has the extraction mechanism similar to SPME, but the volume of its coating is but than SPME big a lot (are approximately SPME 25-250 doubly), and coating has more stable mechanical performance, and SBSE successfully has been applied to organic matter analysis in environment, food and the biological sample at present.Yet, conventional SBSE technology mainly is confined to test in-house operation, can't be applied to the spot sampling of environmental water sample and air sample, reason is: 1. SBSE need finish the stirring extraction process by magnetic stirring apparatus, but the volume of magnetic stirring apparatus is generally big and need alternating current as driving force, is inconvenient to carry; 2. commercialization and homemade coating stirring rod are difficult is fixed to (as the electric drill head) above the spot sampling device.
The utility model content
The utility model provides a kind of portable Stir Bar Sorptive Extraction device at the problems referred to above, and this apparatus structure is simple, is easy to carry, and can be used for the spot sampling (as environmental water sample and air sample etc.) of environmental sample; This device substitutes the Stir Bar Sorptive Extraction analysis that conventional magnetic stirring apparatus is used to test in-house operation, and the friction loss that can avoid stirring rod to cause with directly contacting at the bottom of the extraction flask prolongs the service life of coating.
The technical scheme that the utility model provides is: a kind of portable Stir Bar Sorptive Extraction device, comprise electric mixer, and described electric mixer comprises that motor reaches by motor-driven shaft; Be connected with the coating stirring rod on the shaft.
Described motor is by battery-driven direct current generator; Be provided with the stir speed (S.S.) adjuster, adjuster and motor are for being connected in series.
Shaft of the present utility model is formed by motor shaft with the magnetic puddler that motor shaft connects firmly; The coating stirring rod is interior envelope iron core and the stirring rod that the extraction coating is arranged outward, and the magnetic puddler connects (promptly the magnetic force by the magnetic puddler is adsorbed on the coating stirring rod on the magnetic puddler) with the coating stirring rod by magnetic.
Shaft of the present utility model and coating stirring rod are passed through thread connection.Perhaps the coating stirring rod by Bolt Connection on shaft.
The extraction coating of the utility model coating stirring rod can be dimethyl silicone polymer (PDMS) or C
18Deng, by sol-gal process or adhesion method preparation.
The utlity model has two kinds of operator schemes of head space formula and immersion, can select according to the character of determinand, the actual conditions such as physical state of sample; Stirring rod does not all directly contact with at the bottom of the extraction flask under two kinds of patterns, has avoided the friction loss of coating, has improved the service life of coating.
Described stirring rod coating can be selected according to the character of determinand, and the utility model is applicable to any coating (or non-coating) stirring rod.
The both hand-holdable sampling of the utility model also can be fixed in and sample on the iron stand and extract.
The utility model can be made into microminiaturization, portable sample collecting apparatus, is used for the spot sampling (as environmental water sample and air sample etc.) of environmental sample; The magnetic stirring apparatus of the alternative routine of the utility model is used to test the Stir Bar Sorptive Extraction analysis of in-house operation, and the friction loss of avoiding stirring rod to cause with directly contacting at the bottom of the extraction flask prolongs the service life of coating.The utility model is simple in structure, with low cost, and is easy and simple to handle, and operating cost is lower.
Description of drawings
Fig. 1 is the structural representation of immersion extraction of the present utility model;
Fig. 2 is the structural representation of head space formula extraction of the present utility model.
The specific embodiment
In conjunction with the accompanying drawings utility model is described further with specific embodiment below, sees Fig. 1 to Fig. 2.
As shown in Figure 1, the utility model mainly is made up of the simple electric agitator and the following magnetic puddler that welds of a microminiaturization.The shell 1 of electric mixer is equipped with stir speed (S.S.) adjuster 2 by waste and old stainless steel flashlight shell (20 * 3.5 cm) repacking on the shell, adjuster and motor are for being connected in series.Micromachine and battery case (in adorn 4 joint No. 5 nickel-hydrogen chargeable cells (AA2400 MAH, inspire confidence in south)) are equipped with in inside, and gauge tap is housed on the battery case.Shaft of the present utility model can be welded in the lower end of motor shaft 3 by soldering 4 by motor shaft 3 with the magnetic puddler 5(magnetic puddler 5 that motor shaft 3 connects firmly) form.Shaft can 1500 ~ 6500 rpm under the drive of rechargeable battery any rotating speed rotation.The envelope iron core has coating outward in the coating stirring rod 6, by the firm lower end that is adsorbed in magnetic puddler 5 of magneticaction, and realizes stirring and extraction under the drive of motor.After extraction is finished, carefully stirring rod is taken off, be transferred to desorption tube and get final product with non-magnetic tweezers.
Shaft of the present utility model and coating stirring rod are also passed through thread connection.Perhaps the coating stirring rod by Bolt Connection on shaft.
Stirring rod coating of the present utility model can be dimethyl silicone polymer (PDMS) or C
18Deng, by sol-gal process or adhesion method preparation.
The utlity model has two kinds of operator schemes of head space formula and immersion, can select according to the character of determinand, the actual conditions such as physical state of sample; Stirring rod does not all directly contact with at the bottom of the extraction flask under two kinds of patterns, has avoided the friction loss of coating, has improved the service life of coating.Fig. 1 is for adopting the schematic diagram of immersion operation, and stirring rod places sample solution 7 to carry out sorption extraction.
With 6 kinds of polycyclic aromatic hydrocarbons in Stir Bar Sorptive Extraction and the high performance liquid chromatography off-line coupling analysis environments water sample is example, and result of use of the present utility model is described.
Portable Stir Bar Sorptive Extraction device is fixed on the iron stand, the PDMS stirring rod is installed on the lower end of magnetic puddler with non-magnetic tweezers, again this device is placed sample solution together with stirring rod, regulate suitable rotating speed, behind the extraction certain hour, take off stirring rod and place small size methyl alcohol, ultrasonic desorb was directly used in efficient liquid phase chromatographic analysis after 10 minutes.
The efficient liquid phase chromatographic analysis condition: ODS reversed-phase column (Lichrospher, 200 mm * 4.6 mm, Jiangsu Chinese nation), flowing is methyl alcohol mutually: water (80:20, v/v), flow velocity 1 mL/min.The fluoroscopic examination condition is: naphthalene, Ex=220 nm, Em=330 nm; Acenaphthene, Ex=226 nm, Em=359 nm; Phenanthrene, Ex=246 nm, Em=370 nm; Anthracene, Ex=250 nm, Em=406 nm; Fluoranthene, Ex=234 nm, Em=440 nm; Pyrene, Ex=270 nm, Em=390 nm.
In Stir Bar Sorptive Extraction and the high performance liquid chromatography off-line coupling analysis environments water sample before the extraction of 6 kinds of polycyclic aromatic hydrocarbons with extraction after the result show that it is obvious that the utility model is analyzed the concentration effect of 6 kinds of polycyclic aromatic hydrocarbons.
Fig. 2 and Fig. 1 are similar, and difference is that stirring rod does not contact with sample solution 7, but are suspended from sample solution 7 tops, and this pattern is suitable for extracting the compound of volatilization, half volatile; In addition, the influence of sample substrate to the target analytes extraction can be avoided or reduce to this operator scheme.
Claims (6)
1. a portable Stir Bar Sorptive Extraction device comprises electric mixer, it is characterized in that: described electric mixer comprises that motor reaches by motor-driven shaft; Be connected with the coating stirring rod on the shaft.
2. device according to claim 1 is characterized in that: described motor is by battery-driven direct current generator; Be provided with the stir speed (S.S.) adjuster, adjuster is connected with motor.
3. device according to claim 1 and 2 is characterized in that: shaft is formed by motor shaft with the magnetic puddler that motor shaft connects firmly; The coating stirring rod is interior envelope iron core and the stirring rod that the extraction coating is arranged outward, and the magnetic puddler connects by magnetic with the coating stirring rod.
4. device according to claim 1 and 2 is characterized in that: shaft and coating stirring rod are passed through thread connection.
5. device according to claim 1 and 2 is characterized in that: the coating stirring rod by Bolt Connection on shaft.
6. device according to claim 3 is characterized in that: described extraction coating is a dimethyl silicone polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206199374U CN201862288U (en) | 2010-11-23 | 2010-11-23 | Portable mixing-rod absorption and extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206199374U CN201862288U (en) | 2010-11-23 | 2010-11-23 | Portable mixing-rod absorption and extraction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201862288U true CN201862288U (en) | 2011-06-15 |
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ID=44133456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206199374U Expired - Fee Related CN201862288U (en) | 2010-11-23 | 2010-11-23 | Portable mixing-rod absorption and extraction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201862288U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463833A (en) * | 2013-10-03 | 2013-12-25 | 中华人民共和国济宁出入境检验检疫局 | Stirring rod adsorptive extraction device |
| CN106237653A (en) * | 2016-08-16 | 2016-12-21 | 福州大学 | Hand-held is from ultrasound wave solid-phase microextraction rod and using method thereof |
| CN107008032A (en) * | 2017-05-18 | 2017-08-04 | 大连民族大学 | A kind of Echinoid type fibrous nodules solid-phase micro-extracting device |
| CN109289816A (en) * | 2018-10-29 | 2019-02-01 | 湖北文理学院 | A kind of sulfhydryl modified spiral mixing rod and its preparation method and application |
| CN110961078A (en) * | 2019-11-28 | 2020-04-07 | 河海大学 | Application of fluorinated graphene material, solid-phase micro-extraction probe and adsorption extraction stirring rod based on fluorinated graphene extraction coating |
-
2010
- 2010-11-23 CN CN2010206199374U patent/CN201862288U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463833A (en) * | 2013-10-03 | 2013-12-25 | 中华人民共和国济宁出入境检验检疫局 | Stirring rod adsorptive extraction device |
| CN106237653A (en) * | 2016-08-16 | 2016-12-21 | 福州大学 | Hand-held is from ultrasound wave solid-phase microextraction rod and using method thereof |
| CN106237653B (en) * | 2016-08-16 | 2018-05-04 | 福州大学 | Hand-held is from ultrasonic wave solid phase microextraction rod and its application method |
| CN107008032A (en) * | 2017-05-18 | 2017-08-04 | 大连民族大学 | A kind of Echinoid type fibrous nodules solid-phase micro-extracting device |
| CN109289816A (en) * | 2018-10-29 | 2019-02-01 | 湖北文理学院 | A kind of sulfhydryl modified spiral mixing rod and its preparation method and application |
| CN110961078A (en) * | 2019-11-28 | 2020-04-07 | 河海大学 | Application of fluorinated graphene material, solid-phase micro-extraction probe and adsorption extraction stirring rod based on fluorinated graphene extraction coating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20141123 |
|
| EXPY | Termination of patent right or utility model |