Titanate nanotube SPME coating and preparation method and application thereof

A technology of titanate nanotubes and coatings, applied in the field of analysis and detection, to achieve the effects of improving adsorption and extraction efficiency, good enrichment, and increasing specific surface area

CN110327897AInactive Publication Date: 2019-10-15GUILIN UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-10-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a titanate nanotube SPME coating and a preparation method and application thereof. The coating comprises a titanate nanotube layer attached to solid-phase microextraction fiber. The preparation method comprises the following steps: taking pretreated solid-phase microextraction fiber, coating the surface of the solid-phase microextraction fiber with polyimide resin, adding titanate nanotubes to the polyimide resin, and aging to prepare the titanate nanotube SPME coating. The titanate nanotube SPME coating can be directly used for PAHs analysis in natural water bodies, has a wider linear range and a lower detection limit for a plurality of PAHs, and simultaneously has a good enrichment effect on the plurality of PAHs.
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Description

technical field

[0001] The invention relates to the technical field of analysis and detection, in particular to a titanate nanotube SPME coating and a preparation method and application thereof. Background technique

[0002] Polycyclic aromatic hydrocarbons (Polycyclic Aromatic Hydrocarbons, PAHs) are a class of important environmental pollutants, which have strong carcinogenic, teratogenic and mutagenic effects, and can inhibit the body's immunity and phototoxicity. PAHs mainly come from factory and mine emissions, vehicle exhaust, waste incineration and human life activities, and are widely present in the atmosphere, water and soil. At present, the detection methods of PAHs mainly include gas chromatography flame ionization detector (GC-FID), gas chromatography-mass spectrometer (Gas Chromatography-Mass Spectrometer, GC-MS), high performance liquid chromatography (High Performance Liquid Chromatography, HPLC), two-dimensional gas chromatography-high resolution time-of-fli...

Examples

Embodiment Construction

[0028] In order to describe the technical content, achieved goals and effects of the present invention in detail, the following descriptions will be made in conjunction with the embodiments and accompanying drawings.

[0029] An embodiment of the present invention is: a titanate nanotube SPME coating, the coating includes a titanate nanotube layer attached to a quartz fiber.

[0030] The preparation method of described coating is as follows:

[0031] 1. Treatment of quartz fiber: take a quartz fiber about 20cm long (diameter 140μm, Hebei Yongnian Ruifeng Chromatography Device Co., Ltd.), immerse the front 2cm part in acetone (purchased from Sinopharm Chemical Reagent Co., Ltd.) solution for about 5min , wash off after peeling off the outer polyimide coating. Take out the quartz fiber processed by the above steps, coat a layer of polyimide resin (purchased from Agilent Company) on the surface of the fiber, and then uniformly stain with titanate nanotubes (obtained from the Nat...