Method for simultaneously detecting various preservatives remaining in orange with liquid chromatograph/mass spectrometer

A liquid mass spectrometry and antistaling agent technology, applied in the field of inspection and quarantine, to achieve high sensitivity, optimize analysis procedures and parameters

Active Publication Date: 2014-12-24
衢州出入境检验检疫局综合技术服务中心
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Problems solved by technology

With the wide application of mixed antiseptic preservatives, a single antiseptic preservative detection method can no longer meet the actual needs, and there is an urgent need for a fast, reliable high-throughput detecti...

Method used

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  • Method for simultaneously detecting various preservatives remaining in orange with liquid chromatograph/mass spectrometer
  • Method for simultaneously detecting various preservatives remaining in orange with liquid chromatograph/mass spectrometer
  • Method for simultaneously detecting various preservatives remaining in orange with liquid chromatograph/mass spectrometer

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Embodiment Construction

[0050] 1.1 Instruments, reagents and materials

[0051] Ultimate 3000 ultra-high performance liquid chromatography—TSQ Vantage triple quadrupole tandem mass spectrometer (Thermo Scientific, USA); MS 3digital vortex mixer (IKA, Germany); TGC-10M high-speed centrifuge (Shanghai Luxiangyi Centrifuge Co., Ltd. ), for 5mL centrifuge tubes; MULTIFUGE XIR high-speed centrifuge (Thermo Company, USA), for 50mL centrifuge tubes.

[0052] 2,4-D (98.0%), prochloraz (99.0%), imazalil (99.0%), thiabendazole (99.0%), pyrimethanil (99.0%), thiophanate-methyl (99.0%) ), carbendazim (99.5%) were purchased from DR company in Germany.

[0053] Acetonitrile and formic acid are chromatographically pure and analytically pure anhydrous magnesium sulfate, which are burned at 650°C for 4 hours before use, and stored in a desiccator for later use; sodium chloride, sodium citrate, and disodium hydrogen citrate are all analytically pure; N -Propylethylenediamine adsorbent (PSA, Shanghai Anpu Scientific ...

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Abstract

The invention relates to the technology of inspection and quarantine, in particular to a method for simultaneously detecting various preservatives remaining in orange with a liquid chromatograph/mass spectrometer. The method is to adopt the QuEchERS purification technique, the ultra-high performance liquid chromatography and the electrospray tandem quadrupole mass spectrometry to detect the residuals, optimize analytical procedures and parameters, and study detection of the plurality of preservatives for retaining freshness of the orange with the qualitative method and the quantitative method, wherein the preservatives comprise carbendazim, thiabendazole, prochloraz, imazalil, thiophanate methyl, prochloraz and 2,4-D (2,4-dichlorophenoxyacetic Acid). Therefore, the detection technology which is high in sensitivity and accuracy, quick in detection and capable of simultaneously detecting the preservative residuals can be established.

Description

technical field [0001] The invention relates to inspection and quarantine technology, in particular to a method for simultaneously detecting residues of various antiseptic and antistaling agents in citrus by a liquid mass spectrometer. Background technique [0002] my country's citrus planting area and output account for about 39% and 31.6% of the world's total citrus area and output respectively, ranking first in the world. Citrus is rich in various nutrients and unique physiologically active substances, and is deeply loved by people. In addition to being used for fresh consumption, citrus can also be processed into various by-products. Citrus is one of the fruit trees with the largest cultivation area and the most important economic status in southern my country. Zhejiang Province is an important citrus production base in my country. In recent years, with the rapid increase of citrus production, the relationship between supply and demand of citrus has undergone fundament...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06
Inventor 彭芳雷美康祝子铜吴晓勤徐佳文
Owner 衢州出入境检验检疫局综合技术服务中心
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