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95 results about "Tebufenpyrad" patented technology

Tebufenpyrad is an insecticide and acaricide widely used in greenhouses. It is a white solid chemical with a slight aromatic smell. It is soluble in water and also in organic solvents.

Method for detecting pesticide residues through stirring rod adsorption and extraction

The invention provides a method for detecting pesticide residues by adsorption and extraction with a stirring rod, which belongs to the field of analytical chemistry detection. The method includes the following steps: (1) Extraction: Weigh the sample and place it in a plastic centrifuge tube, add 0.1% acetic acid acetonitrile and anhydrous sodium sulfate, stir well, homogenize for 1 min, and transfer the supernatant to a pear-shaped bottle after centrifugation , and rotavap down to about 1 mL. (2) Adsorption extraction: Dilute the sample liquid after rotary evaporation to 10mL with ultrapure water, add a stirring bar and sodium chloride, and conduct adsorption extraction under shaking conditions. (3) Desorption: After adsorption and extraction, desorb with desorption liquid, pass through the organic phase filter membrane, and inject into the sample bottle. (4) Detection: use liquid chromatography-tandem mass spectrometry (LC-MS/MS) for detection. The beneficial effect of the present invention is that a detection method for benalaxyl, permethazine, pyridaben and tebufenfen residues in fruits and vegetables is established by using the stirring rod adsorption extraction technology, and the method is simple, fast and low in cost.
Owner:JINING ENTRY EXIT INSPECTION & QUARANTINE BUREAU OF P R C
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