大学化学2025，Vol.40Issue(2)：40-49,10.DOI:10.12461/PKU.DXHX202405121
自制表面解吸大气压化学电离质谱装置检测不饱和脂肪酸
Self-Developed Surface Desorption Atmospheric Pressure Chemical Ionization Mass Spectrometry for Detection of Unsaturated Fatty Acids
摘要
Abstract
In response to the current situation in chemistry education,where experiments predominantly focus on verification and students'ability for independent innovation is limited,a novel experiment titled"Self-developed Surface Desorption Atmospheric Pressure Chemical Ionization Mass Spectrometry for Detection of Unsaturated Fatty Acids"has been designed.By guiding students to build their own atmospheric corona discharge ionization device,the experiment offers a deep understanding of the principles of ionization and epoxidation,encouraging experimental initiative.The homemade device is simple,efficient,and significantly reduces teaching costs,while also avoiding the use of organic reagents,reflecting an environmentally friendly approach.In this experiment,students investigate the epoxidation of the C=C bond of oleic acid with the water radical cation(H₂O)2+·,a novel active species,for the rapid quantitative analysis of oleic acid in vegetable oils.The experiment emphasizes essential analytical chemistry techniques and organic mass spectrometry skills,with the goal of cultivating students'hands-on abilities and fostering scientific innovation.This experiment is particularly suitable for undergraduate chemistry laboratory courses.关键词
油酸/直接质谱分析/定量分析/教改实验/无需样品预处理Key words
Oleic acid/Direct mass spectrometry/Quantitative analysis/Teaching reform experiment/No sample pretreatment分类
教育学引用本文复制引用
张小平,胡平花,张军,杨文雯,曹晶晶..自制表面解吸大气压化学电离质谱装置检测不饱和脂肪酸[J].大学化学,2025,40(2):40-49,10.基金项目
江西省高等学校教学改革研究项目(JXJG-21-6-23) （JXJG-21-6-23）
江西国家级大学生创新创业训练计划(202310405004X) （202310405004X）
东华理工大学实验技术开发项目(DHSY-202315) （DHSY-202315）
东华理工大学校级教改项目(1310101295) （1310101295）
