有关于土壤测定的毕业论文

土木工程专业相关毕业论文范文有很多，你首先看能否问问往届毕业生要到相同专业的毕业论文做为参考，如果要不到，你也可以百度下：普刊学术中心，有很多关于毕业论文写作技巧攻略类教程，自己抽时间多学习下，对你毕业论文写作肯定会有帮助的

土壤酸碱性用土壤浸出液，滴到PH试纸上，论文吗，应该是分析土壤酸碱性产生原因吧

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.

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