1·To establish a gas chromatography method for solvent desorption of dichloromethane in the air of workplace.
目的建立工作场所空气中二氯甲烷的溶剂解吸气相色谱测定方法。
2·After reaction, the purified product was obtained through extraction with dichloromethane, drying with anhydrous sodium sulfate and desolventizing.
反应后用二氯甲烷萃取，无水硫酸钠干燥，除去溶剂后得到纯净产物。
3·A capillary GC method with FID detector for the determination of residual organic solvents ethanol, isopropanol, dichloromethane, n-hexane, tetrahydrofuran, DMF and dimethyl malonate was established.
建立了毛细管气相色谱法测定甲磺酸齐拉西酮中残留溶剂乙醇、异丙醇、二氯甲烷、正己烷、四氢呋喃、D MF、丙二酸二甲酯的残留量。
4·The results show that it is easy to separate sucrose-6-acetic ester from sucrose-4-acetic ester, using carbinol and dichloromethane as unfolding agent.
实验结果表明，采用甲醇、 二氯甲烷的混合物作为展开剂可较好地分离6位及4位蔗糖乙酸酯。
5·A simple capillary GC method for the determination of residual ethanol, dichloromethane, chloroform, tetrahydrofuran, 1, 4 dioxane, pyridine and toluene in tropisetron citrate was established.
采用毛细管气相色谱法，以外标法测定枸橼酸托烷司琼中乙醇、二氯甲烷、氯仿、四氢呋喃、二烷、吡啶和甲苯的含量，用串联的HP - 1 0。