Study on Detection Methods of 11 kinds of Pesticide Residues in Dendrobium huoshanense
In this experiment,based on 3 aspects of extraction solvent,purification method and loading condition,an optimal loading condition of seperating 11 kinds of pesticides by comparing the spiked recovery test was screened out,with a set of detection methods for the determination of pesticide residues in D.Huoshanensis was explored.The results showed that there was a good linear correlation between the peak area and the concentration of 11 pesticides in the concentration range of 0～0.50 mg/L,with the correlation coefficient was greater than 0.999,the detection limit was 0.000 7～0.006 4 mg/kg,and the quantitation limit was 0.002 4～0.021 4 mg/kg.In the range of 0.005～0.050 mg/kg addition level,the average recoveries of 11 pesticides were 83.9%～104.8%,and the relative standard devi-ations(RSD)were 0.6%～3.7%.It was proved that this method was simple,quick and had fast analysis speed,and the analytical results could meet the requirements of chemical analysis method verification,being suitable for the detection of pesticide residues in D.Huoshanensis.
万方数据
维普
