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.
采用微量化学方法和固相萃取技术，建立了气相色谱法简单、快速、准确地测定荞头中甲胺磷农药残留量的方法。
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。
The method includes the selective extraction of domoic acid in fresh mussel, the pretreatment with centrifuge and filter, chromatographic analysis in the optimized conditions.
采用含甲醇的水溶液，选择性地提取鲜淡菜中软骨藻酸，经离心、过滤等手段进行样品处理，在最优化的条件下进行液相色谱检测。
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