://The Steps of the QuEChERS Method

The Steps of the QuEChERS Method

The steps of the QuEChERS method can be summarized as follows:
(1) sample pulverization;
(2) extraction and separation of a single solvent acetonitrile;
(3) adding salt such as MgSO4 to remove water;
(4) adding an adsorbent such as ethylenediamine-N-propylsilane (PSA) to remove impurities;
(5) The supernatant was subjected to GC-MS and LC-MS.
3. Advantages of the QuEChERS method:
(1) The recovery rate is high, and the recovery rate of a large number of polar and volatile pesticide varieties is greater than 85%;
(2) High precision and accuracy, which can be corrected by internal standard method;
(3) A wide range of analyzable pesticides, including polar and non-polar pesticides, can be used to obtain better recovery rates;
(4) The analysis speed is fast, and the processing of 6 samples can be completed within 30 minutes;
(5) The solvent is used in a small amount, the pollution is small, the price is low, and the chloride-containing solvent is not used;

2018-09-14T07:53:33+00:00September 14th, 2018|