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

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...

AI Technical Summary

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 detection method, which is very important for protecting the health of consumers and avoiding and reducing unnecessary agricultural waste. Losses and international trade disputes have important theoretical and practical implications

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