CN202195977U - Device utilizing magnetic carbon-coated iron nanoparticles to concentrate heavy metal ions - Google Patents
Device utilizing magnetic carbon-coated iron nanoparticles to concentrate heavy metal ions Download PDFInfo
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- CN202195977U CN202195977U CN2011202139985U CN201120213998U CN202195977U CN 202195977 U CN202195977 U CN 202195977U CN 2011202139985 U CN2011202139985 U CN 2011202139985U CN 201120213998 U CN201120213998 U CN 201120213998U CN 202195977 U CN202195977 U CN 202195977U
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- heavy metal
- nano particle
- magnetic carbon
- iron clad
- carbon iron
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Abstract
A device utilizing magnetic carbon-coated iron nanoparticles to concentrate heavy metal ions comprises magnetic carbon-coated iron nanoparticles and a magnetic separating device; the magnetic separating device comprises a power supply and an electromagnet; and a polytetrafluoroethylene film layer is coated outside the electromagnet. The device has a simple structure, is portable, can be used for concentrating the heavy metal ions, and is particularly suitable for the detection of the hygienic safety of food containers.
Description
Technical field
The utility model relates to the separation and concentration technology of heavy metal ion, particularly a kind of device that utilizes magnetic carbon iron clad nano particle enriching heavy metal ion.
Background technology
The development of science and technology and production practices requires increasingly high to chemical detection; For accurately measuring low content target detection thing, people adopt the method for separation and concentration to get rid of matrix or other materials disturb and enrichment is its detectability that reaches analytical instrument to the target detection thing.
At present, for the detection of micro heavy, often need many instruments such as inductively coupled plasma atomic emission spectrum or Atomic Absorption Spectrometer and AFS etc.
The utility model content
The shortcoming that the purpose of the utility model is to overcome prior art provides a kind of device that utilizes magnetic carbon iron clad nano particle enriching heavy metal ion with not enough.
The purpose of the utility model realizes through following technical proposals: a kind of device that utilizes magnetic carbon iron clad nano particle enriching heavy metal ion comprises magnetic carbon iron clad nano particle and magnetic separating device;
Described magnetic carbon iron clad nano particle is preferably the magnetic carbon iron clad nano particle that adopts the argon arc plasma process to prepare, can be with reference to Zhou Chun etc., and the research of the synthetic carbon iron clad nano particle of direct current carbon arc method, the plain technology of charcoal, 2006,4 (25): 6～9;
Magnetic carbon iron clad nano particle described in the step (1) more preferably obtains through the preparation method who comprises following steps: with the ratio of oxydol according to 1g magnetic carbon iron clad nano particle and 40mL oxydol (percent by volume 30%), ultrasonic oscillation 1 hour; Separate obtaining magnetic carbon iron clad nano particle, washing, drying obtains the stronger magnetic carbon iron clad nano particle of adsorptive power;
Described magnetic separating device preferably includes power supply and electromagnet two parts;
More preferably, the outside surface of described electromagnet coats one deck plastic layer, preferably includes the polytetrafluoroethylene film layer, and this is for preventing the corrosion of electromagnet in acid medium.
The utility model has following advantage and effect with respect to prior art:
This apparatus structure is simple, and separation and concentration that can be through magnetic separation technique Rapid Realization element to be checked can be realized single device multielement fast measuring, and the security performance of tableware container is detected, and accuracy is high, and is simple to operate.
Description of drawings
The described schematic representation of apparatus of Fig. 1 the utility model, wherein 1 is power supply; 2 is electromagnet; 3 is the polytetrafluoroethylene film layer; 4 is carbon iron clad nano particle.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but the embodiment of the utility model is not limited thereto.
A kind of device that utilizes magnetic carbon iron clad nano particle enriching heavy metal ion comprises magnetic carbon iron clad nano particle 4 and magnetic separating device; Magnetic separating device preferably includes power supply 1 and electromagnet 2 two parts; The outside surface of electromagnet 2 coats one deck polytetrafluoroethylene film layer 3, and polytetrafluoroethylene film layer 3 is for preventing the corrosion of electromagnet in acid medium.Wherein:
Magnetic carbon iron clad nano particle is for to obtain according to prior art for preparing: adopt the argon arc plasma process to prepare carbon iron clad nano particle.The carbon arc method is the high temperature that utilizes electric current powerful between the both positive and negative polarity electrode to produce, and make the vaporization rapidly at high temperature of dag and iron powder, and rapid cooling has formed the material-carbon iron clad nano particle with unique nanostructured on reactor.With iron powder and carbon dust by different proportion (Fe: C=6: 4) be mixed with the sample negative electrode; Just very pure graphite electrode places argon atmospher (1000Pa) direct supply to play arc discharge, and the control discharge current is about 120A; DC voltage begins discharge during for 22V; Reaction produces ionization and plasma, forms the air-flow of cigarette shape in the reaction chamber, and deposition forms nano particle on wall.After reaction finished, collection was filtered the sample of collecting with toluene after being deposited on the sample on the wall, obtained nano-sized carbon and coated the iron particle powder.
Use this device heavy metal ion is carried out enrichment: Cr, Ni, Cd, the Pb mixed standard solution of preparation 20mg/L; NaOH with 0.1mol/L regulates pH value to 10.0; Add 50mg carbon iron clad nano particle in every 10mL mixed standard solution; Stir 3～5min, magnetic separates the back and measures concentration of element to be checked in the clear liquid, calculates the adsorbance of carbon iron clad in the mixed solution.Record Cr, Ni, Cd, Pb adsorbance and be respectively 3.6mg/g, 4.8mg/g, 6.3mg/g and 2.1mg/g.Be illustrated in that carbon iron clad nano particle has higher adsorbance in the mixed solution, can satisfy the requirement of trace analysis the SPE material.
A kind of device that utilizes magnetic carbon iron clad nano particle enriching heavy metal ion comprises magnetic carbon iron clad nano particle 4 and magnetic separating device; Magnetic separating device preferably includes power supply 1 and electromagnet 2 two parts; The outside surface of electromagnet 2 coats one deck polytetrafluoroethylene film layer 3, and polytetrafluoroethylene film layer 3 is for preventing the corrosion of electromagnet in acid medium.Wherein:
Magnetic carbon iron clad nano particle is for to prepare according to following steps: the carbon iron clad nano particle and the 40mL oxydol (percent by volume 30%) of 1g embodiment 1 preparation are mixed; Ultrasonic oscillation 1 hour; Magnetic separates the back and thoroughly washes oxydol off with deionized water; Put into 110 ℃ of following dryings of baking oven again 4 hours, thoroughly to remove moisture, the magnetic carbon iron clad nano particle after obtaining handling.
Using this device detects the tableware container: according to the sample treatment of standard GB 5009.81 defineds, stainless steel tableware container to be checked is soaked 24h with percent by volume 4% acetum.Get two portions of 10mL soak solutions, a copy of it adds a certain amount of Cr, Ni, Cd, pb, As standard solution, and pH is transferred to 9 back constant volumes to 25mL, and another part transfers to the direct constant volume in 9 backs to 25mL with pH.In every 10mL liquid to be checked, add the carbon iron clad nano particle that 30mg handled through oxydol respectively; Room temperature concussion 10min; Pipetting carbon iron clad nano particle and use the pH value through magnetic separating device is that 1 HCl solution carries out wash-out, measures its solution concentration then, calculate recovery rate.Sample after handling is detected, and calculate recovery rate, each element recovery rate is between 87%～106%, and the result sees table 1.Show that this device can be used for actual sample and detects, accuracy is higher.
The table 1 soak solution analysis result and the recovery
The foregoing description is the utility model preferred implementation; But the embodiment of the utility model is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit and the principle of the utility model, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within the protection domain of the utility model.
Claims (4)
1. a device that utilizes magnetic carbon iron clad nano particle enriching heavy metal ion is characterized in that comprising magnetic carbon iron clad nano particle and magnetic separating device.
2. the device that utilizes magnetic carbon iron clad nano particle enriching heavy metal ion according to claim 1, it is characterized in that: described magnetic separating device comprises power supply and electromagnet.
3. the device that utilizes magnetic carbon iron clad nano particle enriching heavy metal ion according to claim 2 is characterized in that: the outside surface coating plastic layer of described electromagnet.
4. the device that utilizes magnetic carbon iron clad nano particle enriching heavy metal ion according to claim 3, it is characterized in that: described plastic layer is the polytetrafluoroethylene film layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202139985U CN202195977U (en) | 2011-06-20 | 2011-06-20 | Device utilizing magnetic carbon-coated iron nanoparticles to concentrate heavy metal ions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202139985U CN202195977U (en) | 2011-06-20 | 2011-06-20 | Device utilizing magnetic carbon-coated iron nanoparticles to concentrate heavy metal ions |
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| Publication Number | Publication Date |
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| CN202195977U true CN202195977U (en) | 2012-04-18 |
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| CN2011202139985U Expired - Fee Related CN202195977U (en) | 2011-06-20 | 2011-06-20 | Device utilizing magnetic carbon-coated iron nanoparticles to concentrate heavy metal ions |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454135B (en) * | 2012-12-20 | 2015-07-01 | 北京莱伯泰科仪器股份有限公司 | Device for combining sample enrichment with analytical instrument |
| CN106053456A (en) * | 2016-06-24 | 2016-10-26 | 许毅 | Urine concentrating device |
| US10011503B2 (en) | 2014-07-22 | 2018-07-03 | Corning Incorporated | Method for making activated carbon-supported transition metal-based nanoparticles |
-
2011
- 2011-06-20 CN CN2011202139985U patent/CN202195977U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454135B (en) * | 2012-12-20 | 2015-07-01 | 北京莱伯泰科仪器股份有限公司 | Device for combining sample enrichment with analytical instrument |
| US10011503B2 (en) | 2014-07-22 | 2018-07-03 | Corning Incorporated | Method for making activated carbon-supported transition metal-based nanoparticles |
| CN106053456A (en) * | 2016-06-24 | 2016-10-26 | 许毅 | Urine concentrating device |
| CN106053456B (en) * | 2016-06-24 | 2018-11-27 | 许毅 | A kind of urine enrichment facility |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20120418 Termination date: 20130620 |