介质阻挡放电-发射光谱测定偏二甲肼  

The determination of unsymmetrical dimethyl hydrazine by dielectric barrier discharge-optical emission spectroscopy

作　　者：吴得福 熊思 王强 宋玉 邢媛 李金花[2] 周保学[2] WU Defu;XIONG Si;WANG Qiang;SONG Yu;XING Yuan;LI Jinhua;ZHOU Baoxue(Qingdao Jia Ming Measurement and Control Technology Co.,Ltd,Qingdao 266000,China;School of Environmental Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]青岛佳明测控科技股份有限公司,青岛266000 [2]上海交通大学环境科学与工程学院,上海200240

出　　处：《分析试验室》2022年第6期635-638,共4页Chinese Journal of Analysis Laboratory

基　　金：国家重大科学仪器设备开发专项项目(2018YFF01011702)资助。

摘　　要：基于气相色谱分离、低温等离子放电与发射光谱技术建立了偏二甲肼(UDMH)的测定方法。以介质阻挡放电(DBD)低温等离子体作为偏二甲肼的发射光谱(OES)激发源、DBD-OES微型发射光谱系统产生的384.94 nm特征光谱为检测信号,电荷耦合检测器(CCD)采集信号。仪器检出限为0.48μg/L;UDMH质量浓度为5μg/L时,相对标准偏差(RSD)为1.3%;环境水样的加标回收率为84%~90%。方法可应用于痕量偏二甲肼的检测和应急监测。The determination method of unsymmetrical dimethyl hydrazine(UDMH)was established based on gas chromatographic separation,low-temperature plasma discharge and emission spectroscopy technology.The low-temperature plasma of dielectric barrier discharge(DBD)was used as the excitation source for the optical emission spectroscopy(OES)of unsymmetrical dimethyl hydrazine.The characteristic spectrum at 384.94 nm generated by the DBD-OES was used as the detection signal,which was collected by charge coupled detector(CCD).The detection limit of the instrument was 0.48 μg/L.When the concentration of UDMH was 5 μg/L,the relative standard deviation(RSD)was 1.3%,and the standard recoveries of environmental water samples were about 84%-90%.The method can be applied to trace monitoring of unsymmetrical dimethyl hydrazine for emergency and laboratory analysis.

关 键 词：偏二甲肼 介质阻挡放电 发射光谱 测定 

分 类 号：X830[环境科学与工程—环境工程] O657.3[理学—分析化学]