Hand-held self-ultrasonic solid-phase microextraction stick and using method thereof

An ultrasonic and hand-held technology, applied in the field of analytical chemistry, can solve the problems of uneven distribution of ultrasonic energy, bulky ultrasonic bath, attenuation of ultrasonic energy, etc., achieve convenient and fast maintenance and assembly, break through technical bottlenecks, and improve precision Effect

Active Publication Date: 2018-05-04
FUZHOU UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, ultrasonic-assisted extraction baths have two major disadvantages, namely, the uneven distribution of ultrasonic energy and the decay of ultrasonic energy over time.
In addition, the ultrasonic bath is bulky and not easy to carry. It is difficult to realize on-site analysis when combined with the SPME method.

Method used

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  • Hand-held self-ultrasonic solid-phase microextraction stick and using method thereof

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Embodiment Construction

[0029] The hand-held self-ultrasonic solid-phase microextraction stick includes a hand-held ultrasonic stick 1, a hand-held ultrasonic stick and solid-phase microextraction fiber interface 3, and a solid-phase microextraction fiber 4, and is characterized in that: the hand-held ultrasonic stick and the solid-phase microextraction The phase microextraction fiber interface 3 is fixed on the thin neck 2 at the bottom of the handheld ultrasonic rod, and the solid phase microextraction fiber 4 is fixed on the other end of the handheld ultrasonic rod and the solid phase extraction microextraction fiber interface 3. The hand-held self-ultrasonic solid-phase microextraction rod extends into the centrifuge tube 6 containing the complex matrix sample.

[0030] The application steps of the hand-held self-ultrasonic solid-phase microextraction stick of the present invention are as follows:

[0031] 1) Prepare the solution to be extracted;

[0032] 2) Take a 3 cm solid phase microextracti...

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Abstract

The invention relates to a handheld self-ultrasonic solid-phase micro-extraction bar and an application method thereof. The handheld self-ultrasonic solid-phase micro-extraction bar comprises a handheld ultrasonic bar, a handheld ultrasonic bar and solid-phase micro-extraction fiber interface and a solid-phase micro-extraction fiber, and is characterized in that the handheld ultrasonic bar and solid-phase micro-extraction fiber interface is fixed at the bottom of the handheld ultrasonic bar, and the solid-phase micro-extraction fiber is fixed at the other end of the handheld ultrasonic bar and solid-phase micro-extraction fiber interface. The handheld self-ultrasonic solid-phase micro-extraction bar is reasonable in design, simple in operation, convenient and rapid in maintenance and assembling, convenient in combination with various analytic instruments, and particularly suitable for being combined with a headspace-gas chromatography-mass spectrometry on line. Meanwhile, the handheld self-ultrasonic solid-phase micro-extraction bar can also be directly used for gathering and extracting trace substances in various complicated samples and can perform the in-situ pretreatment.

Description

technical field [0001] The invention belongs to the field of analytical chemistry, and more specifically relates to a hand-held self-ultrasonic solid-phase microextraction rod and a use method thereof. Background technique [0002] The pretreatment of samples in complex matrices (such as urine, blood, plasma, etc.) is a very important link in the sample analysis process. Through sample pretreatment, matrix interference can be eliminated, and target substances can be purified, enriched and separated. Therefore, sample pretreatment directly affects the analytical sensitivity as well as the precision and accuracy of the analytical results. However, the sample pretreatment process is usually complex and time-consuming, and many sample pretreatment processes account for about 2 / 3 of the entire analysis time. At present, the development of efficient and environmentally friendly sample pretreatment technology has become one of the research hotspots in analytical chemistry. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D15/10
CPCB01D15/10
Inventor 张兰张文敏
Owner FUZHOU UNIV
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