Electrically-driven solid phase micro-extraction method and device thereof

A solid-phase microextraction column and electric-driven technology, which is applied in the field of electric-driven solid-phase microextraction and its devices, can solve the problems of adsorption and extraction of various target analytes, damage of solid-phase microextraction fiber head, unfavorable double Electric layer generation and other issues, to achieve the effect of improving analysis and detection sensitivity, easy assembly and adjustment, and easy operation

A solid-phase microextraction column and electric-driven technology, which is applied in the field of electric-driven solid-phase microextraction and its devices, can solve the problems of adsorption and extraction of various target analytes, damage of solid-phase microextraction fiber head, unfavorable double Electric layer generation and other issues, to achieve the effect of improving analysis and detection sensitivity, easy assembly and adjustment, and easy operation

CN102879255AInactive Publication Date: 2013-01-16NINGBO UNIV

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electrically-driven solid phase micro-extraction method and device thereof
  • Electrically-driven solid phase micro-extraction method and device thereof
  • Electrically-driven solid phase micro-extraction method and device thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0036] 1) Pretreatment of metal wire 2: Take a section of stainless steel wire (30mm×1.2mm i.d.), clean it, and apply a thin layer of commercially available epoxy resin adhesive after drying, and wait until it is completely cured for later use.

[0037] 2) Preparation of solid-phase microextraction column 3: take 4.0g PEG-1540 and heat it to melt, add 2.0g epoxy resin and mix for 2 minutes, cool to room temperature, then add 0.5g diethylenetriamine, and mix thoroughly for 2 minutes Obtain a uniform, transparent viscous liquid, pour it into a 1mL disposable syringe (made of polypropylene, the inner diameter of the tube is about 5mm), inject the liquid with a length of about 10-15mm, and immerse the aforementioned treated stainless steel wire 2 vertically in the reaction In the liquid, leave a section out of the reaction liquid, seal it and place it in an oven at 60°C for 24 hours of reaction, and take the prepared solid-phase microextraction column 3 out of the container.

[00...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
coating thicknessaaaaaaaaaa
diameteraaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to an electrically-driven solid phase micro-extraction method and a device thereof. An integrated porous material prepared through treating an epoxy resin as a base material, diethylenetriamine as a curing agent and polyethylene glycol as a pore forming agent and utilizing an in-situ gradual polymerization process is adopted as a solid phase micro-extraction material, the form of the solid phase micro-extraction material to prepare a solid micro-extraction column is combined with a rotation-speed-adjustable motor, a stirring effect is realized through rotation, and simultaneously the solid phase micro-extraction material which is adopted as an electrical adsorption work electrode and a platinum wire electrode which is adopted as a counter electrode are combined with a high-voltage direct current power supply to realize an electric adsorption effect in order to complete the electrically-driven solid phase micro-extraction. The electrically-driven solid phase micro-extraction method combining the electric adsorption technology with the stirring technology effectively overcomes a disadvantage that magnetic stirring cannot be used in a small-volume solution and simultaneously reduces a disadvantage that the abrasion of a solid phase micro-extraction stirring bar is easy, so the service life can be prolonged; the integrated epoxy resin based porous polymer is treated as the adsorption material, so the extraction amount and the detection sensitivity are improved. The method has the advantages of simplicity, easy operation and high flexibility.

Description

technical field [0001] The invention relates to an electric-driven accelerated solid-phase microextraction method and a device thereof, which is a pre-enrichment separation technology for various analysis methods and belongs to the laboratory application category. Background technique [0002] Solid-phase micro-extraction (SPME), which integrates sampling, extraction, enrichment, separation, and sample injection, has become one of the important sample pretreatment techniques. Extraction, SPE) technology can significantly shorten the sample pretreatment time, thereby improving the analysis efficiency. For example, a complete SPE process often takes 30-60 minutes, while the SPME process can be reduced to 10-30 minutes. However, when faced with a large number of sample analysis tasks, especially compared to the large-scale instrumental measurement process that can be completed within minutes or even seconds, it is still of great significance to further shorten the time of SPME...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
16 Jan 2013
Publication
CN102879255A
IPC
G01N1/34; G01N1/40
Inventors
王邃; 陶艳玲