2 results about "Pyrifluquinazon" patented technology

This invention primarily relates to herbicide conjugates comprising (i) bensulfuron, (ii) pyrifluquinazon, and (iii) bensulfuron-methyl, and compositions comprising said herbicide conjugates. The invention further relates to a method for preparing said herbicide conjugates and compositions. The invention also relates to the use of said herbicide conjugates and compositions in agriculture and for the control of harmful plants.

This invention relates to the field of pesticide residue detection technology, and provides a method for detecting fluoride herbicide residues in fruits and vegetables, aiming to solve the technical defects of existing detection methods, such as poor selectivity and insufficient sensitivity of adsorbents for fluoride-containing pesticides. This method uses HFIP functionalized adsorbent as a solid-phase extraction packing material. After activation, sample extraction, salting-out centrifugation, pH adjustment, sample loading, rinsing, and elution, quantitative detection is achieved using ultra-high performance liquid chromatography-tandem mass spectrometry. This invention modifies HFIP, utilizing fluorine-fluorine interactions, hydrogen bonds, and hydrophobic interactions to synergistically enhance the specific adsorption of fluoride-containing herbicides, solving the problems of poor selectivity and insufficient sensitivity of traditional adsorbents. This method is simple to operate, has high enrichment efficiency, good recovery and repeatability, and a low detection limit, making it suitable for rapid and accurate quantitative detection of fluoride herbicide residues such as flufenacet, fluthiamethoxam, pyrifluquinazon, and flufenacet in cucumbers and other fruits and vegetables.