Study on Matrix Effect of Determination of Pesticide Residues in Six Types of Tea by QuEChERS Combined with Gas Chromatography-Mass Spectrometry
QuEChERS combined with gas chromatography-mass spectrometry was used to determine the residues of five pesticides in six types of tea,and the matrix effects in the determination process were studied.The results showed that different compounds in different teas showed different matrix enhancement effects.Among them,omethoate showed strong matrix effects in different teas;the four pesticides in black tea and Fuzhuan tea showed large matrix enhancement effects.The recoveries of pesticide residues in tea were 70.3%～127.0%,indicating that the matrix had a correction effect on the recovery,but the correction effect of different matrices was different.
NETL
NSTL
万方数据
