A gas chromatographic method for the determination of methamidophos pesticide residues in the Allium Chinense was established by means of micro chemistry and solid phase extraction techniques.
As a HPLC method of metal coordinate, the conditions of extraction, extraction efficiency and chromatographic separation conditions have been discussed.
拟定了金属配合物的萃取高效液相色谱法，对萃取条件和萃取百分率，色谱分离条件进行了研究。
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The method includes the selective extraction of domoic acid in fresh mussel, the pretreatment with centrifuge and filter, chromatographic analysis in the optimized conditions.