摘要
该研究建立了一种新型高效液相色谱-紫外分光光度法(HPLC-UV)测定环境水样中7种农药含量。在优化后的条件下,使用离子液体作为萃取溶剂,与水样混合均匀促使其形成乳液,再利用液-液微萃取技术提取出目标物,该过程对环境友好无害。在最佳条件下,7种农药分离良好、标准曲线线性良好、相关系数(γ)均不小于0.999 3。结果还表明,自来水和崇德湖的相对标准偏差(RSD)分别为1.88%~4.24%和2.57%~4.86%。自来水和崇德湖的加标回收率分别为95.52%~97.12%和96.90%~104.06%。
An improved effective high performance liquid chromatography coupled to a ultraviolet detection(HPLC-UV)was developed for the determination of seven pesticides in environmental water samples in the study.The ionic liquid was used as the extraction solvent and mixed with the aqueous sample solution,thus forming the emulsion under the improved conditions.The target objects of the mixed solution were extracted by liquid-liquid microextraction technology.The process was harmless to the environment.Under the optimized conditions,the seven pesticides were well separated.The standard curves were in a good linear curve with the correlation coefficient r≥0.9993.The results shown that the relative standard deviations(RSD)for tap water and Chongde Lake were 1.88%~4.24%and 2.57%~4.86%,respectively.And the recovery rates of spiked samples was in the range from 95.52%to 97.12%and from 96.90%to 104.06%,respectively.
作者
李幼林
周光明
罗庆红
胡玉
潘庆庆
LI Youlin;ZHOU Guangming;LUO Qinghong;HU Yu;PAN Qingqing(Education Ministry Key Laboratory on Luminescence and Real-Time Analysis,Southwest University,Chongqing 400715,China)
出处
《环境保护科学》
CAS
2020年第3期89-94,共6页
Environmental Protection Science
基金
国家自然科学基金(21675131)。
