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Method for rapidly detecting benzopyrene

A technology for benzopyrene and oil is applied in the field of separating fat-soluble benzopyrene, which can solve the problems of short service life of a chromatographic column for oil samples, insufficient optimization, complicated overall operation, etc., so as to improve detection accuracy and sensitivity, The effect of reducing the time required for inspection and improving inspection efficiency

Pending Publication Date: 2021-06-01
SHIMADZU (CHINA) CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0006] However, in the method using SPE and GPC, the overall operation is still complicated, time-consuming and labor-intensive. In fact, optimization cannot be said to be sufficient for simplifying the pretreatment process of the sample to be tested.
However, the method of directly dissolving samples in THF also has the problem of compatibility be

Method used

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  • Method for rapidly detecting benzopyrene
  • Method for rapidly detecting benzopyrene
  • Method for rapidly detecting benzopyrene

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Experimental program
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Embodiment

[0148] Through this embodiment, the effectiveness and analytical accuracy of the detection method of the present invention are verified, and the method of the present invention is used to quantitatively analyze some existing commercial oils and fats.

[0149]

[0150] Methanol (LC-MS grade) and n-Hexane (HPLC grade) (HPLC grade from Thermo Fisher Scientific).

[0151] carbon dioxide (CO 2 , purity ≥99.99%, Beijing, China).

[0152] Acetonitrile, LC-MS grade, commercially available (HPLC grade, from Thermo Fisher).

[0153]

[0154] The experiment uses the Nexera UC system, Shimadzu Corporation (Kyoto Prefecture, Japan);

[0155] Fluorescence detector: RF-20A XS, Shimadzu Corporation (Kyoto Prefecture, Japan);

[0156] LC-30AD SF CO 2 Pump, LC-30AD pump, SIL-30AC autosampler (20μL), CTO-20AC column thermostat, SPD M20A diode array detector (with high pressure detection cell) and a SFC-30A back pressure regulator (BPR) .

[0157] In addition, a high-pressure six-way va...

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Abstract

The invention relates to a method for rapidly detecting benzopyrene. The method comprises the following steps: carrying out component separation on a grease sample by using supercritical chromatography, removing non-polar components in the grease sample, and retaining benzopyrene in the grease sample in a chromatographic column of the supercritical chromatography; introducing the benzopyrene retained in a chromatographic column of the supercritical chromatography into reversed-phase liquid chromatography so as to detect the benzopyrene, wherein a mobile phase in the supercritical chromatography comprises supercritical fluid and a modifier, and the modifier is a substance for adjusting the polarity of the supercritical fluid.

Description

technical field [0001] The invention relates to the field of (quantitative) detection of chemical substances, in particular to the separation of fat-soluble components from oil samples, and in particular to a method and device for separating fat-soluble benzopyrene from oil samples. Background technique [0002] Benzo(α)pyrene (BαP) is a strong carcinogen, because of its strong fat solubility, it is easy to exist in oil. Among them, edible vegetable oil is likely to contain such substances due to factors such as process, environment or packaging materials. [0003] At present, the content of benzopyrene has been explored and standardized in the detection of oil products. Typically, for example, China GB / 2762-2017 (National Food Safety Standard - Limits of Contaminants in Food) stipulates that the limit of benzopyrene in oils and fats and their products is below 10ug / kg. The EU "EC Regulation 835 / 2011" stipulates that the limit of benzopyrene in oil and its products is belo...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/34G01N30/89C11B1/00
CPCG01N30/02G01N30/34G01N30/89C11B1/00
Inventor 郭彦丽
Owner SHIMADZU (CHINA) CO LTD
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