桔梗毕业论文
发布时间：2023-02-28 19:04
桔梗毕业论文
In this paper, capillary gas chromatography of soil organic pesticides residues in the soil to petroleum ether + acetone in Soxhlet extraction is extracted, the extract of the scale centrifuge tube in a concentrated sulphuric acid purification. By capillary gas chromatography of soil and bellflower in the content of DDT and heptachlor. Bellflower to soil and acetone in petroleum ether 10-Soxhlet extraction in the extraction, extracts of the scale centrifuge tube in a concentrated sulphuric acid purification.
Key words: capillary gas chromatography; medicine; soil; Soxhlet extraction: organochlorine pesticide residues in
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