The invention discloses a GC-EI-MS measurement method for
fluoride ether bacteria amide residues. The method is mainly used for measuring the content of
fluoride ether bacteria amide remaining in a
complex matrix food and agricultural products such as cereal grains and animal derived food. The method comprises the following steps: extracting
fluoride ether bacteria amide remaining in a sample in a homogenization manner by virtue of
acetonitrile or an
acetonitrile solution containing 1 percent of
acetic acid, performing purification and concentration by virtue of a C18 / PSA
solid-phase extraction column, performing GC-EI-MS detection, establishing a corrected
standard curve by adopting a vehicle solution free of a
pesticide to be measured, and measuring the fluoride ether bacteria amide residues according to an external standard method. According to the method, the average
recovery rate is 82.5 to 87.4 percent, the average
relative standard deviation (RSD) is 4.4 to 6.4 percent, the
detection limit is lower than 0.56[mu]g / kg, the method has the advantages of convenience and high speed in operation, good
impurity removal effects, high sensitivity, high
repeatability and accurate qualification and quantification, the technical requirement of uniform limit of 0.01mg / kg
maximum residue limit can be met, and powerful
technical support can be provided for ensuring the
food safety of Chinese people and the healthy development of foreign export trade.