Simultaneous Determination of 18 Fungicides in Chinese Chives by QuEChERS-HPLC-MS/MS
It was to establish a method for the simultaneous detection of 18 fungicides residues in Chinese chives by QuEChERS-high performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS).The results showed that retention time for the 18 fungicides was found in the range from 2.8-8.5 min with Phenomenex diphenyl chromatographic column.The linear relation was good when the concentration range was 0.01-0.08 μg/mL,and the correlation coefficient of the 18 fungicides was≥0.999 0;The limits of detection were in the range of 0.11-0.87 μg/kg,and the limits of quantification were in the range of 0.65-1.89 μg/kg;The average recoveries in the sample additive experiment at 3 concentration levels of 5.0,10.0 and 50.0 μg/kg were 87％-108％,and the relative standard deviations were in the range of 2.1％-4.5％.The proposed procedure was simple,quick and accurate for the simultaneous determination of the 18 fungicides in Chinese chives.
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