Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of metal carrier solid-phase micro-extraction fiber

A technology for extracting fibers and metal carriers, applied in non-metallic elements, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of easy breakage of the extraction head, and achieve the effects of improved detection sensitivity, large surface area, and good thermal stability

Inactive Publication Date: 2012-10-24
TIANJIN CHUNFA BIO TECH GRP
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the extraction head is easily broken during use

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of metal carrier solid-phase micro-extraction fiber
  • Preparation method of metal carrier solid-phase micro-extraction fiber
  • Preparation method of metal carrier solid-phase micro-extraction fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Choose a stainless steel fiber with a length of 20mm and a diameter of 0.35mm, eroded by concentrated HF for 30 minutes, take it out, rinse with distilled water to neutrality, and use N 2 Blow dry; Weigh 100g epoxy resin, add xylene and stir until it is completely dissolved, then add 15g pyromellitic anhydride, 15g tertiary amine, 20g asbestos powder in sequence, stir to make the components evenly dispersed, and prepare high temperature resistant epoxy Resin: Coat a layer of high-temperature resistant epoxy resin on the surface of the treated stainless steel fiber, and then dip a layer of C18 bonded silica gel on the outer layer, and place it in an oven at 180°C for 60min; the high-temperature cured extract fiber, It is placed in a Sox-type extractor and refluxed with dichloromethane at 60°C for 40 minutes to obtain a finished product of extracted fiber. The coating thickness of the finished product of extracted fiber is 85 μm.

[0029] Among them, the epoxy resin is a mult...

Embodiment 2

[0031] Choose a stainless steel fiber with a length of 20mm and a diameter of 0.35mm, eroded by concentrated HF for 40 minutes, take it out, rinse with distilled water to neutrality, and use N 2 Blow dry; apply a layer of high-temperature silicone resin on the surface of the treated stainless steel fiber, and then dip a layer of C8 bonded silica gel on the outer layer, and place it in an oven at 180°C for 60 minutes; the high-temperature cured extract fiber It is placed in a Sox-type extractor and refluxed with dichloromethane at 60°C for 40 minutes to prepare a finished product of extracted fiber. The coating thickness of the prepared finished product of extracted fiber is 105 μm.

Embodiment 3

[0033] The extraction fiber produced in Example 1 was used to analyze the phenolic substances in the environmental water sample, and the extraction was carried out by immersion.

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
diameteraaaaaaaaaa
coating thicknessaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a metal carrier solid-phase micro-extraction fiber and a preparation method thereof, and the extraction fiber comprises a carrier and a coating on the surface of the carrier, wherein the carrier is metal fiber which is in the length of 10-40mm and in the diameter of 0.1-0.5mm; the coating comprises an absorbent layer; and an absorbent is a fixed phase for silica gel or chromatogram for one or a plurality of liquid phase chromatograms bonded with C1 to C18, phenyl, benzyl, cyano, diol or amino. The invention further provides the method for preparing the metal carrier solid-phase micro-extraction fiber, and the prepared extraction fiber is particularly applicable to analyzing aromatic hydrocarbon compounds, polycyclic aromatic hydrocarbons and other organic matter ingredients in water; compared with the conventional SPME (solid phase micro-extraction) coating, the coating has the characteristics of being large in surface area, being easy to achieve balance and improving the detection sensitivity.

Description

Technical field [0001] The invention relates to the field of trace analysis of organic matter in food, environment, and biological samples, in particular to a metal carrier solid-phase micro-extraction fiber and a preparation method thereof. The prepared extraction fiber is particularly suitable for analyzing aromatic hydrocarbon compounds and polycyclic aromatic hydrocarbons in water. Background technique [0002] Solid phase microextraction (SPME) technology is a novel sample preparation technology. In 1989, Belardi and Pawliszynl of the University of Waterloo in Canada reported the SPME technology for the first time; in 1993, Supelco of the United States launched a commercial SPME device; in 1995, Chen and Pawliszynl designed a solid phase microextraction-high performance liquid chromatography (SPME- HPLC) combined with an interface device, and is produced by Supelco. In 1997, Eisert and Pawliszyn designed an SPME-HPLC combined device with automatic sampling and an in-tube S...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/10B01J20/32
Inventor 邓莉郝学财邢海鹏盛家川
Owner TIANJIN CHUNFA BIO TECH GRP