二噁英类分析用溶剂的超高纯化技术

Special Solvents Purifying Device for Analysis of Polychlorinated Dibenzo-p-Dioxins and Dibenzofurans

设计、开发了二英呋喃分析专用高纯溶剂的提纯装置,通过104倍的高度浓缩后,经高分辨率气相色谱-高分辨率质谱联用仪的检测,对该提纯装置的提纯效果进行了验证评价。经验证,国产分析纯级甲苯、正己烷、二氯甲烷、丙酮等溶剂中二英呋喃类以及其他杂质等干扰物的存在量被控制在10-15g以下(仪器检测下限值)。该溶剂提纯装置体积小、操作方便,能够满足二英研究实验室所需的超高纯品质的二英级溶剂的需求,极大地降低了二英的研究成本。

One special solvents purifying device was developed for analysis of polychlorinated dibenzo-p-dioxins and dibenzofurans(PCDD/Fs).The purifying effect of the device was evaluated by high resolution gas chromatography and high resolution mass spectrum(HRGC-HRMS)with femto gram level analytical technique.The results showed that no PCDD/Fs and interferential materials were detected(i.e.below detection limit 10^(-15) g)in the analytically pure solvents such as toluene,hexane,dichloromethane and acetone.The device is small in size and flexible in operation,can meet with the ultra-high purity requirements of PCDD/Fs agent for laboratory use,and can greatly decrease the research cost of PCDD/Fs.