CIC法定量测定TNT  

Quantitative Determination of TNT by CIC Method of GC-AED

作　　者：罗西 刘红妮[1] 苏鹏飞[1] 张皋[1] 胡银[1] 王歌扬[1] 温晓燕[1] LUO Xi;LIU Hongni;SU Pengfei;ZHANG Gao;HU Yin;WANG Geyang;WEN Xiaoyan(Xi’an Modern Chemistry Research Institute,Xi’an 710065,China)

机构地区：[1]西安近代化学研究所,西安710065

出　　处：《兵器装备工程学报》2019年第2期208-210,共3页Journal of Ordnance Equipment Engineering

基　　金：国防技术基础项目(JSZL2016208C006)

摘　　要：采用气相色谱-原子发射光谱对TNT进行定量测定,建立了一种非含能非自身标样定量测定方法。以二号中定剂为外标物,通过二号中定剂的C元素标准曲线定量TNT中的C元素。结果表明:用二号中定剂作外标物定量TNT的C元素线性范围是22. 43～637. 50μg/mL,相关系数(r)为0. 999 9。以3倍信噪比计算检测限,得到TNT的C元素方法检测限为0. 015μg/mL。TNT在高、中、低浓度下的回收率为94. 6%～101. 3%,相对标准偏差为0. 3%～0. 7%。该方法具有较好的准确度和精密度,在自身标准物质缺乏的情况下能够对TNT进行准确定量。The gas chromatography-atomic emission spectroscopy (GC-AED) was used to quantitatively measure TNT, and established a quantitative determination method of TNT by non-energetic non-self-standard samples. In this method, the dimethyl-diphenylurea was used as an external standard sample, and the C element in the TNT was quantified by the C element standard curve of the dimethyldiphenylurea. The results showed that the linear range of C element of TNT was 22.43~637.50 μg/mL, and the correlation coefficient (r) was 0.999 9. The detection limit was calculated by 3 times of the signal-to-noise ratio, and the detection limit of the C element method of TNT was 0.015 μg/mL. The recovery of TNT at high, medium and low concentrations was 94.6% to 101.3%, and the relative standard deviation was 0.3% to 0.7%. The method has good accuracy and precision. It can accurately quantify TNT in the absence of its own standard materials.

关 键 词：气相色谱-原子发射光谱 CIC法 定量分析 TNT 二号中定剂 

分 类 号：O657.7[理学—分析化学]