Rotational detachable film solid phase micro extraction device

An extraction device and a rotary technology, which is applied in the field of rotary detachable thin-film solid-phase microextraction devices, can solve the problems that the solid-phase microextraction stirring rod is easy to wear and it is difficult to use magnetic stirring, so as to improve the extraction volume and detection sensitivity, The effect of easy operation and simple method

Inactive Publication Date: 2015-06-03
SUZHOU HANXUAN DETECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved in the present invention is to provide a rotary detachable thin-film solid-phase microextraction device, which overcomes the shortcoming that it is difficult to use magnetic stirring in a small volume solution, and reduces the shortcoming that the solid-phase microextraction stirring rod is easy to wear, thereby prolonging the service life

Method used

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  • Rotational detachable film solid phase micro extraction device
  • Rotational detachable film solid phase micro extraction device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add the carbon molecular sieve particles into the polydimethylsiloxane prepolymer and stir evenly, then add the curing agent according to the ratio of 10:1, stir again for 10 minutes, mix well, put the mixture on the spin coater to make a mold, and then put it on the 80 Curing is carried out at a temperature of ℃ for 1 hour. After curing, the polydimethylsiloxane composite film embedded with carbon molecular sieves is heated to 120 ℃ and kept for 2 hours.

Embodiment 2

[0020] Add the carbon molecular sieve particles into the polydimethylsiloxane prepolymer and stir evenly, then add the curing agent according to the ratio of 10.5:1, stir again for 15 minutes, mix well, put the mixture on the spin coater to make a mold, and then put it on the 90 Cure at a temperature of 1.5 h. After curing, heat the polydimethylsiloxane composite film embedded with carbon molecular sieves to 130° C. and keep for 3 h.

Embodiment 3

[0022] Add the carbon molecular sieve particles into the polydimethylsiloxane prepolymer and stir evenly, then add the curing agent according to the ratio of 10:1~10.5:1, stir again for 10~15min, mix evenly and put the mixture on the spin coater Make molds, and then cure at 80-90°C for 1-1.5 hours. After curing, heat the polydimethylsiloxane composite film embedded with carbon molecular sieves to 120-130°C and keep it for 2-3 hours. Can.

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Abstract

The invention discloses a rotational detachable film solid phase micro extraction device which comprises a ceramic column substrate and a polydimethylsiloxane composite film, wherein the polydimethylsiloxane composite film is arranged on the surface of the ceramic column substrate and is internally embedded with a carbon molecular sieve; a rotating shaft rod is fixedly arranged on the ceramic column substrate; a motor is arranged on the rotating shaft rod. Compared with the prior art, the rotational detachable film solid phase micro extraction device effectively overcomes the defect that a small-volume solution is hard to stir with a magnetic force, and meanwhile the defect that a solid micro extraction stirring rod has high probability of abrasion is reduced, so that the service life of the rotational detachable film solid phase micro extraction device can be prolonged; as a Caboxen-PDMS composite film is used as an adsorption material, the extraction amount and the detection sensitivity can be improved; the method is simple and convenient, easy to operate and high in flexibility.

Description

technical field [0001] The invention relates to a rotary detachable thin-film solid-phase microextraction device. Background technique [0002] Chinese patent 201110176522.3 relates to a polydimethylsiloxane composite carbon molecular sieve coated stirring extraction rod. The stirring extraction rod uses polydimethylsiloxane composite carbon molecular sieve as the coating material for the stirring extraction rod coating. The body is used as the substrate coated with the stirring extraction rod, and the rod body is made of an iron core shorter than the glass tube sealed in the glass tube. Contents of the invention [0003] The technical problem to be solved in the present invention is to provide a rotary detachable thin-film solid-phase microextraction device, which overcomes the shortcoming that it is difficult to use magnetic stirring in a small volume solution, and reduces the shortcoming that the solid-phase microextraction stirring rod is easy to wear, Thus, the servi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D15/10
Inventor 李光朔张艳李继军张倩陈平徐玮
Owner SUZHOU HANXUAN DETECTION TECH
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