Sample treatment method and automatic treatment device

A technology for sample processing and processing agent, applied in the field of sample processing and automatic processing devices, can solve the problems of harmful workers' health, low extraction and purification efficiency, and limited instrument precision, and achieves favorable separation and high sealing performance. , the effect of reducing the impact on the instrument

Active Publication Date: 2020-11-20
长治市农产品质量安全检验监测中心
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the limitation of instrument precision, the sample must be processed when performing the above-mentioned chromatographic detection
Commonly used sample processing techniques include solid phase extraction, microwave extraction, gel chromatography and other methods. These methods have low degree of automation, low extraction and purification efficiency, slow speed, and serious environmental pollution.
Matrix-dispersed solid-phase extraction technology condenses the traditional sample pretreatment technology, which is suitable for the extraction and purificati

Method used

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  • Sample treatment method and automatic treatment device
  • Sample treatment method and automatic treatment device

Examples

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Example Embodiment

[0026] like figure 2 The shown automatic sample processing device includes a box body 1 , a first mechanical arm 2 , a second mechanical arm 3 , an adsorbent storage tank 4 , a hose 5 , a centrifuge tube plate 6 , a solvent storage tank 7 , and a rotor 8 .

[0027] A rotor 8 is arranged on the inner central axis of the box body 1, and a fence is arranged outside the rotor 8 to prevent the ultrasonic water from affecting the centrifugal operation.

[0028] The center of circle of described centrifuge tube plate 6 is fixed on centrifuge rotor 8 axles, and there are some grooves for placing centrifuge tubes on it.

[0029] The hose 5 is connected to the inside of the solvent storage tank 7 and the first sampling port 21, and between the sampling port of the second mechanical arm 3 and the sample collection tube, for transferring the treatment agent or the supernatant in the centrifuge tube.

[0030] The first mechanical arm 2 is fixed on the top of the box body 1, and is provid...

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Abstract

The invention discloses a sample treatment method and an automatic treatment device. The treatment method comprises the following steps of: modifying a ZSM-5 molecular sieve, adding a treatment agentand the ZSM-5 molecular sieve into a sample, performing ultrasonic extraction, carrying out centrifuging and separating supernatant. The automatic sample treatment device comprises a box body, a firstmechanical arm, a second mechanical arm, an adsorbent storage tank and a solvent storage tank. During working, the first mechanical arm adds a treatment agent and a molecular sieve into a centrifugetube, a rotor carrying the centrifuge tube descends to perform ultrasonic extraction and centrifugation on a solution in the tube, and then the second mechanical arm sucks supernatant for detection. According to the sample treatment method and the automatic treatment device, the treatment efficiency can be improved, the automation of the whole sample treatment process is completed, and the operation accuracy and safety are improved.

Description

technical field [0001] The invention relates to a sample processing method and a processing device, in particular to a processing method and an automatic processing device for pesticide residue samples. Background technique [0002] Modern agricultural production is increasingly dependent on exogenous substances such as pesticides, antibiotics and hormones, and the unreasonable use of these substances usually leads to excessive pesticide residues in agricultural products and affects food safety. Therefore, when agricultural products are harvested and before they are sold, relevant agencies and departments will conduct pesticide residue testing on them. [0003] Chromatography is one of the commonly used methods for detecting pesticide residues. It mainly separates and detects substances according to the different distribution coefficients of different substances in the stationary phase and mobile phase. Due to the limitation of instrument precision, the sample must be proce...

Claims

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Application Information

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IPC IPC(8): G01N30/06G01N30/14
CPCG01N30/06G01N30/14G01N2030/062
Inventor 牛巍范静波张琪张云鹏马席席史晓宁焦晓伟王琪刘海霞王晓强刘娜崔建兵李霞
Owner 长治市农产品质量安全检验监测中心
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