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Detection method for rapid pretreatment of dioxin sample

A detection method and sample technology, which is applied in the field of dioxin detection, can solve the problems of greater impact on the detection limit of products, waste of collected samples, and impact on accuracy, and achieve the effects of reducing complexity, easy operation, and improving accuracy

Pending Publication Date: 2021-03-16
四川微谱检测技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At this stage, there are more and more methods for dioxin detection. However, no matter what method is used for detection, the sample must be purified. The traditional detection method of dioxin passes through the purification column at least twice and concentrates twice. , this purification process involves multiple purification processes. This process is not only complicated to operate, but also involves waste of collected samples, which affects the accuracy of the final test results.
[0003] Chinese invention patent CN201610056900.7 discloses a method for determining the content of dioxins in tea and rice. In the detection method, the purification step of composite silica gel column and the purification step of activated carbon are used to remove impurities as much as possible for the detection sample. The impact of dioxin-like substances, but because of the two purification and concentration involved in the operation process, there will inevitably be sample residues in the container containing the sample solution. As a product with a relatively low content, the more complicated steps are, the more harmful the product The greater the impact of the detection limit

Method used

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  • Detection method for rapid pretreatment of dioxin sample
  • Detection method for rapid pretreatment of dioxin sample
  • Detection method for rapid pretreatment of dioxin sample

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Detection method for fast pre-processing of dioxin samples, including the following steps:

[0072] S01: Preparation of the sample: dry the sample, grind, 60 mesh sieve, spare;

[0073] S02: Extraction of the sample: Extract the sample obtained by the S01 step, and subtract the sample to extract the sample after extraction;

[0074] S03: Purification of samples: Purification of the purification sample obtained by S02 steps, in turn, including: set the purified column, install the purifying column, add the purified column filler, elution, and evaporation, to obtain the analysis sample;

[0075] S04: Test of the sample: Analysis of the analysis sample obtained by the S03 step by high distracting gas chromatography - high distortion mass spectrometry.

[0076] The detection sample is a soil sample.

[0077] The detection conditions of the high resolution gas chromatography-high resolution mass spectrometry are as follows:

[0078] Inlet temperature: 270 ° C; carrier gas flow: ...

Embodiment 2

[0103] A method of detecting a fast forward treatment of dioxin samples, and the purification step 2 of the integrated purification column is different from the first embodiment, and the acid silica gel is added to 4 g.

Embodiment 3

[0105] A method of detecting a fast pre-treatment of dioxin samples, and in the first embodiment, the acid silica gel is added 20 g in the step 2 of the integrated purification column, and the extraction of the integrated purification column is different from the first embodiment.

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Abstract

The invention belongs to the technical field of dioxin detection, and particularly relates to a detection method for rapid pretreatment of a dioxin sample. On one hand, the invention provides a detection method for rapid pretreatment of a dioxin sample, and the detection method comprises the following steps: S01, preparing a sample; S02, extracting a sample; S03, purifying the sample; and S04, detecting the sample. According to the method for rapid pretreatment of the dioxin sample developed by the invention, an integrated purification column is adopted, and neutral silica gel, acidic silica gel, neutral silica gel, alkaline silica gel, neutral silica gel, activated carbon and anhydrous sodium sulfate purification column filler are sequentially added into the integrated purification column, so that the sample purification step is simple, convenient and rapid to operate; and moreover, the accuracy of experimental data is ensured, and the method is an important invention in the process of detecting dioxin samples.

Description

Technical field [0001] The present invention belongs to the field of dioxin detection, and more particularly to a detection method of fast pre-treatment of dioxin samples. Background technique [0002] At present, there is more and more methods for the detection of dioxins, but no matter what method detection, the sample is purified, and the traditional dioxin detection means by at least two purification columns, and concentrates twice This purification process involves multiple purification processes, which is not only complex, but also the more process purification, and the waste of collecting samples is also affected by the final test results. Accuracy. [0003] Chinese invention patent CN201610056900.7, which discloses a method of determination of dioxin content in rice and rice, and the detection method of composite silica gel column purification step, activated carbon purification step, this operation is for the maximum possible removal impurities to detect samples The infl...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/14G01N30/72
CPCG01N30/02G01N30/06G01N30/14G01N30/72G01N2030/062
Inventor 王韵樵李沛伍新艳徐梅
Owner 四川微谱检测技术有限公司