Extracting head for solid phase micro extraction of dextrin derivative and its making process

A technology of cyclodextrin and derivatives, applied in the fields of polymer chemistry and analytical chemistry, can solve the problems of low operating temperature, poor anti-solvent washing ability, short service life, etc.
CN100350995CInactive Publication Date: 2007-11-28WUHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN UNIV
Publication Date
2007-11-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The extracting head for solid phase micro extraction of cyclodextrin derivative includes quartz fiber and its coating and the coating is composite coating of 2, 6-di-oxy-methyl-beta-cyclodextrin and hydroxyl silicon oil bonded to the surface of the quartz fiber. The preparation process of the extracting head includes the following steps: diluting 2, 6-di-oxy-methyl-beta-cyclodextrin with dichloromethane, adding hydroxyl silicon oil, tetraethoxy silane, 3-(2, 3-epoxy propane) propyl trimethoxy silane and water containing trifluoro acetic acid, adding hydrogen-containing silicon oil, ultrasonic vibration and centrifuging, and taking supernatant; inserting one end of the quartz fiber after eliminating protecting layer and drying into the sol liquid, taking out, drying and ageing under the protection of nitrogen to obtain the extracting head. The present invention has high heat stability, high solvent flush resistance, long service life, high in Benzedrine medicine capacity and excellent application foreground in medicine analysis, including stimulant detection.
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Description

technical field

[0001] The invention relates to a cyclodextrin derivative solid-phase microextraction extraction head and a preparation method thereof, that is, a composite coating solid-phase microextraction extraction of 2,6-di-O-methyl-β-cyclodextrin and hydroxyl silicone oil A head and a preparation method thereof belong to the field of polymer chemistry and also belong to the field of analytical chemistry. Background technique

[0002] Solid-phase microextraction is a simple, rapid, sensitive, and solvent-free sample pretreatment method that integrates sampling, concentration, and injection. Its initial application is concentrated in the fields of environment, food, and spice analysis. It is increasingly used in the analysis of pharmaceutical samples. The analysis of micro and trace drug samples in complex biological matrices (for example, the detection of stimulant drugs in human body fluids) puts forward higher requirements for the selectivity and sensitivity of soli...

Claims

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