The residues of 26 organic pesticides in Citrus reticulata from Three Gorges reservoir were determined by LC-MS/MS method.The results showed that the linear range of 26 organic pesticides was 10~250 ng/mL(r2 is 0.996 7~0.999 9),the recoveries were 69.8%~124.7%,the RSD was 0.89%~9.10%(n=6),and the limits of quantification were 2.5~5.0 μg/kg.Among the 56 batches of Citrus reticulata,the use of pesticides was the most complex,with some as many as 7 kinds.The highest detection rate was 64.9%,the mass fraction was 10~912 μg/kg,and the detection rate was 64.9%,indicating that the method was fast,sensitive,stable and reliable,and could be used for the rapid detection of organic pesticides in Chinese medicinal materials.
authentic medicinal materialsLC-MS/MSCitrus reticulatacurrent situation of pesticide pollutionThree Gorges Res-ervoir