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Organic pretreatment system for food samples

A sample and organic technology, applied in the system field of sample pretreatment, can solve problems such as complex and tedious sample pretreatment, and achieve the effect of reducing labor intensity

Inactive Publication Date: 2012-11-21
BEIJING JITIAN INSTR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem solved by the present invention is to provide a fully automatic food sample organic pretreatment system with the functions of extraction, preconcentration, purification and constant volume, which solves the technical bottleneck problem of complex and cumbersome sample pretreatment in food safety testing, and realizes the Rapid pretreatment of samples

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Embodiment Construction

[0018] For further illustrating the present invention, specifically illustrate in conjunction with following examples:

[0019] Such as figure 1 As shown, the present invention is a fully automatic food sample organic pretreatment system with functions of extraction, preconcentration, purification and constant volume, comprising an extraction module, a preconcentration module, a purification module and a constant volume module connected in sequence; the extraction module It includes a high-pressure pump 1, a pressure-resistant extraction and cleaning tank 2, a flow path tee, a one-way valve, a pressure transmitter 11, a release valve and a stop valve; the high-pressure pump 1 is connected to the pressure-resistant extraction and the Cleaning pool 2; the other channel is connected to the release valve and pressure transmitter 11 respectively through a flow tee; the pressure transmitter 11 is connected to the check valve; the pressure-resistant extraction and cleaning pool 2 is ...

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Abstract

The invention relates to an organic pretreatment system for food samples. The organic pretreatment system comprises an extraction module, a pre-concentration module, a purification module and a volume ensuring module. The extraction module comprises a high-pressure pump, a pressure-proof extraction and cleaning pool and a pressure and temperature control and protection valve unit and is used for extraction of the samples to obtain extract of a target compound. The pre-concentration module comprises a concentration cup, an infusion pump and a gas and liquid channel control valve unit and is used for concentration of the extract to obtain concentration liquid of the target compound. The purification module comprises an SPE (solid phase extraction) column and is used for purification of the concentration liquid to obtain purification liquid of the target compound. The volume ensuring module comprises a concentration cup, a cold trap, a vacuum pump and an infusion pump and is used for concentration and volume ensuring of the purification liquid. Under premise of guaranteeing organic pretreatment effect of the food samples, seamless connection between the samples to be detected and analyzing and detecting equipment is really achieved, unattended operation is achieved, and labor intensity of operators is reduced greatly.

Description

technical field [0001] The invention relates to a system for sample pretreatment in food safety testing. Background technique [0002] With the rapid development of modern chemical analysis technology, analysis methods are becoming more and more fast, trace, accurate and automatic, and sample pretreatment has become a technical bottleneck restricting the development of modern analysis methods. [0003] Food samples have a relatively complex matrix (high oil, pigment, sugar, etc.), and false positive and false negative test results are more likely to occur in the actual detection process, and the factors that cause the decrease in accuracy mostly come from the pretreatment of the sample. Therefore, the pretreatment of food samples is particularly important. [0004] Generally speaking, the organic pretreatment of food samples mainly includes four steps: sample extraction, preconcentration, purification and concentration to volume. For the extraction of food samples, there a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 史俊稳顾爱平叶建平武威威张志鹏
Owner BEIJING JITIAN INSTR CO LTD
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