| abstract |
The invention discloses a sample membrane separation pretreatment method for detection of pesticide residues in tea. After extracting a tea sample with water to obtain a tea sample extract, first use a solid phase extraction membrane for adsorption, and then use an extraction solvent for extraction to obtain The tea sample extract is then used for the detection of pesticide residues by chromatographic analysis. The invention adopts the solid-phase membrane extraction method to pre-treat the tea samples for detection, has the advantages of fast processing speed, good extraction effect, high detection recovery rate, and improves the detection efficiency and detection accuracy of pesticide residues in tea. |