GC-Q-TOF/MS detection technology of 708 pesticide residues in legume vegetables

A GC-Q-TOF technology for beans and vegetables, applied in the field of pesticide residue detection, can solve the problems of food safety monitoring loopholes, high prices, and a valid period of only 2-3 years, so as to save detection costs, save costs, and improve work efficiency effect
CN105675701AInactive Publication Date: 2016-06-15CHINESE ACAD OF INSPECTION & QUARANTINE
5 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINESE ACAD OF INSPECTION & QUARANTINE
Publication Date
2016-06-15
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to the field of pesticide residue detection and provides a detection method for screening 708 pesticide residues in legume vegetables. The method includes the steps of: a) under a first-stage mode of GC-Q-TOF / MS, collecting a fragment ion full-scanning mass spectrogram of pesticide reference substances under certain conditions to obtain a chemical formula, retention time, accurate mass numbers of fragment ions, and ion abundance ratio of the pesticide; b) introducing the data to PCDL software, correlating the data with corresponding pesticide information to obtain a database; c) under the same preset conditions, detecting the full-spectrum data of the to-be-detected samples; and d) performing accurate mass database retrieval to the sample detection results, and accurately identifying the detected pesticide satisfying identification basis to obtain the types of the pesticide residues in the legume vegetables. By means of the GC-Q-TOF / MS high-resolution mass spectrum, the detection method can detect the pesticide residues in the legume vegetables, preferably, with combination of special pre-treatments, so that the method is quick, high-throughput, high-precision and high-reliability. The method is free of a reference substance and can be used for qualitatively detecting and identifying the 708 pesticides in legume vegetables.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of pesticide residue detection, in particular to a detection method for screening 708 kinds of pesticide residues in beans and vegetables by using GC-Q-TOF / MS. Background technique

[0002] Fruits and vegetables are closely related to people's lives, especially the nutritional value of legume vegetables (peas, lentils, kidney beans, edamame, beans, vegetable soybeans, edible peas, cowpeas, etc.) is favored by consumers. Most legume vegetables contain higher plant protein, carbohydrates, vitamins and inorganic salts than other vegetables. The content of vitamins is higher in B vitamins, and the content of vitamin B is the highest. However, there are more than 1100 kinds of pesticides and chemicals that may be used in the planting, growth and preservation of bean vegetables at present. However, with the widespread use of pesticides, irregular behaviors such as excessive use, abuse and misuse have also occurred, making...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More