CN2455328Y - Simple solid phase micro-extractor - Google Patents
Simple solid phase micro-extractor Download PDFInfo
- Publication number
- CN2455328Y CN2455328Y CN 00255835 CN00255835U CN2455328Y CN 2455328 Y CN2455328 Y CN 2455328Y CN 00255835 CN00255835 CN 00255835 CN 00255835 U CN00255835 U CN 00255835U CN 2455328 Y CN2455328 Y CN 2455328Y
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- China
- Prior art keywords
- extracting
- phase micro
- solid phase
- pull bar
- extracting head
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Abstract
The utility model discloses a simple and new solid phase micro extracting device, which is composed of a pulling rod, a sleeve pipe, a needle cylinder, a silicone rubber sealing pad, a fixing nut and an extracting head (probe). The extracting head (probe) is fixed on the front end of the pulling rod and the surface is coated with polymer or crown ether compound. The solid phase micro extracting device can be used for sampling, condensing and enriching various samples. The utility model has the characteristics of simple structure, convenient operation and high extracting efficiency with simple manufacture, low cost and long service life.
Description
The utility model relates to a kind of structure of simple and easy practical solid-phase micro-extracting device, belongs to analytical chemistry, sample pre-treatments technology.
Analytic sample has various composition complexity of form and the lower characteristics of determinand content, must just can carry out various Instrumental Analysis through after the pre-treatment.Sample pre-treatments plays and concentrates tested trace components, and sensitivity of raising method and removal are to the effect of analytical system harmful substance.Traditional sample-pretreating method has tens kinds of liquid-liquid extraction, soxhlet extraction, chromatography, distillation, absorption, centrifugal filtrations etc.But generally have and with an organic solvent measure shortcomings such as excessive, that the processing time is long, operating procedure is various.So not only lose sample easily, produce, and the excessive use of solvent also can influence operating personnel's health, the environment around polluting than mistake.
Solid phase micro-extraction technique is a kind of centralized procurement sample of growing up over past ten years, extraction, concentrate, sample introduction, resolve the sample pre-treatments new method in one.This method be based on the glass fibre (extracting head) that scribbles high polymer adsorb, the enrichment determinand, finish from the whole process that is extracted into analysis is general and only need tens minutes even faster.Its minimum detectable level is all 10
-9～10
-12The order of magnitude.Whole process has realized solvent free, has reduced the pollution to environment.It can analyze Instrument crosslinking with gas-chromatography, high performance liquid chromatography, Capillary Electrophoresis, spectrum etc.This method has obtained good application in fields such as environmental monitoring, biochemistry, food, medical and health, medical jurisprudence.The commercial solid-phase micro-extracting device (being mainly the product of U.S. supelco) that uses is made up of handle and extraction probe two parts at present, extracting head to be installed on the handle during each the use, convenient inadequately, and fetch long price (3000 yuan of need of handle, pop one's head in 800 yuan for one), limited applying of solid phase micro-extraction technique greatly.
The purpose of this utility model is to provide a kind of novel simple and easy practical solid-phase micro-extracting device.It has characteristics simple in structure, easy to operate, that extraction efficiency is high, and makes simple, low, the long service life of cost.
For realizing that the technical scheme that above-mentioned purpose of the present utility model is taked is:
A kind of novel simple and easy practical solid-phase micro-extracting device, as shown in Figure 1, it is made up of pull bar, sleeve pipe, syringe, silicone rubber seal pad, hold-doun nut, extracting head (probe), syringe needle is fixed on the syringe front end by hold-doun nut, the silicone rubber seal pad is arranged in hold-doun nut, sleeve pipe is fixed together with pull bar is coaxial, is fixed with an extracting head at the front end of pull bar, scribbles polymer or the crown compound with efficient extraction function on the surface of extracting head.
Because the stainless steel syringe needle freely be drawn in or be released to extracting head can by the pull bar of device, syringe needle inserts in the sample solution during sampling, pull bar presses down, extracting head is exposed above solution or is immersed solution, through certain hour, after absorption reaches balance, pull bar is upwards drawn 1-2cm, extracting head returns in the syringe needle, and syringe needle is extracted out from sample solution.During sample introduction, syringe needle inserts gas chromatograph or other instruments, and once more pull bar is pressed down, and exposes extracting head and carries out the sample desorption, and after desorption was intact, pull bar upwards drew 1-2cm, and extracting head is return syringe needle, extracts out from injection port, finishes sampling, concentrated, sample introduction overall process.
Pull bar in the device, sleeve pipe, syringe needle are made by stainless steel material, syringe is made by glass or stainless steel material, and extracting head is to adopt methods such as bonding, sol-gel to be coated with polymer or the crown compound that stain has efficient extraction function on the vitreous silica optical fiber to form.
This solid-phase micro-extracting device (1) is made simple and practical, cheap, only is 1/10th of commercial solid-phase micro-extracting device.(2) long service life, extracting head can be with 100～150 times/, and commercial extracting head only is 40～100 times/.(3) selectivity is good, and to polarity, non-polar sample, inorganic, organic compound all can be measured.(4) extraction efficiency height, but the sample of 0.1～0.01nL/L in the detection of contamination.(5) have wide range of applications: trace materials such as environmental pollutant analysis, Food Inspection, biochemistry all can detect.
This solid-phase micro-extracting device has developed a kind of simple and practical sample-pretreating method, in environmental pollutant analysis, various volatilization partly volatilize pre-treatment, preenrichment and the compartment analysis of organic micro-pollutant.This kind solid phase micro-extraction technique also is expected to the inorganic toxic metals element of trace is carried out enrichment.And will be in life science, be used widely in fields such as food inspection.
Description of drawings: Fig. 1 is the structural representation of solid-phase micro-extracting device of the present utility model, among the figure: 1. pull bar, 2. sleeve pipe, 3. syringe, 4. hold-doun nut, the 5. close liner of silicon rubber, 6. syringe needle, 7. extracting head.
Below in conjunction with concrete example the technical solution of the utility model is further described:
A kind of simple and easy practical solid-phase micro-extracting device; structure as shown in Figure 1; the pull bar of solid-phase micro-extracting device is a stainless-steel pipe 1; its outer stainless steel sleeve pipe 2,1,2 that a protection pull bar is arranged is with being contained in the stainless steel syringe 3, and syringe has a hold-doun nut 4 for 3 times; in silicone rubber pad 5 is arranged; play control draw rod positions and sealing function, 6 sample injection usefulness of syringe needle, the extracting head 7 that scribbles polymer or crown compound coating is embedded in the pull bar.
Claims (1)
1. solid-phase micro-extracting device, it is made up of pull bar, sleeve pipe, syringe, silicone rubber seal pad, syringe needle and hold-doun nut, syringe needle is fixed on the syringe front end by hold-doun nut, it is characterized in that: the silicone rubber seal pad is arranged in hold-doun nut, sleeve pipe is fixed together with pull bar is coaxial, front end at pull bar is fixed with an extracting head, scribbles polymer or the crown compound with efficient extraction function on the surface of extracting head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00255835 CN2455328Y (en) | 2000-11-30 | 2000-11-30 | Simple solid phase micro-extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00255835 CN2455328Y (en) | 2000-11-30 | 2000-11-30 | Simple solid phase micro-extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2455328Y true CN2455328Y (en) | 2001-10-24 |
Family
ID=33612686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00255835 Expired - Fee Related CN2455328Y (en) | 2000-11-30 | 2000-11-30 | Simple solid phase micro-extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2455328Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331551C (en) * | 2005-07-29 | 2007-08-15 | 武汉大学 | Cup[4] open chain crown ether solid-phase micro extraction head and making method therefor |
| CN102688749A (en) * | 2012-05-04 | 2012-09-26 | 上海新拓分析仪器科技有限公司 | Extraction material and preparation method thereof, and device and extraction method used for solid-phase micro-extraction |
| CN102998399A (en) * | 2012-11-19 | 2013-03-27 | 中国科学院青岛生物能源与过程研究所 | Pretreatment device of fiber needle type sample |
| CN106422413A (en) * | 2016-09-14 | 2017-02-22 | 济南海能仪器股份有限公司 | Injection needle used on mechanical arm type solid-phase extraction instrument |
| CN113018908A (en) * | 2021-03-12 | 2021-06-25 | 吉林化工学院 | Preparation method of solid-phase micro-extraction device with velvet carbon nitride as coating |
-
2000
- 2000-11-30 CN CN 00255835 patent/CN2455328Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331551C (en) * | 2005-07-29 | 2007-08-15 | 武汉大学 | Cup[4] open chain crown ether solid-phase micro extraction head and making method therefor |
| CN102688749A (en) * | 2012-05-04 | 2012-09-26 | 上海新拓分析仪器科技有限公司 | Extraction material and preparation method thereof, and device and extraction method used for solid-phase micro-extraction |
| CN102688749B (en) * | 2012-05-04 | 2013-11-06 | 上海新拓分析仪器科技有限公司 | Extraction material and preparation method thereof, and device and extraction method used for solid-phase micro-extraction |
| CN102998399A (en) * | 2012-11-19 | 2013-03-27 | 中国科学院青岛生物能源与过程研究所 | Pretreatment device of fiber needle type sample |
| CN106422413A (en) * | 2016-09-14 | 2017-02-22 | 济南海能仪器股份有限公司 | Injection needle used on mechanical arm type solid-phase extraction instrument |
| CN113018908A (en) * | 2021-03-12 | 2021-06-25 | 吉林化工学院 | Preparation method of solid-phase micro-extraction device with velvet carbon nitride as coating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |