纳米TATB中微量残阴离子含量的离子色谱分析  

Ionic Chromatogram Method for Quantitative Analysis of Trace Component in Nano-TATB

作　　者：陈玲[1,2] 李哲[1,2] 赵颖彬[1,2] 逄小青[1,2] 黄伯勇[1,2] 

机构地区：[1]中国工程物理研究院化工材料研究所,四川绵阳621999 [2]中国工程物理研究院含能材料测试评价中心,四川绵阳621999

出　　处：《含能材料》2017年第2期150-154,共5页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金资助(11502250)

摘　　要：为评估纳米TATB产品质量,采用氧瓶燃烧法处理样品,用离子色谱测定吸收液中氯离子、硫酸根的方法来确定TATB中的微量组分含量。在Metrosep A Supp 7型阴离子分离柱上,以4.7 mmol·L-1Na2CO3溶液作为淋洗液,电导检测器进行检测。在优化的色谱条件下,样品中氯离子、硫酸根的方法检出限分别为0.0025 ug·mL^(-1),0.0032 ug·mL^(-1),线性范围分别为(0.5~3.0)ug·mL^(-1),(0.1~2.5)ug·mL^(-1),线性相关系数均大于0.9990。重复性测试(n=6)相对标准偏差分别为1.65%、2.28%,回收率分别为96.30%~103.73%,97.23%~100.91%。该方法具有操作简单快捷、无污染等优点,能满足纳米TATB中硫、氯的定量分析要求。In order to assess the quality of nano-TATB,a simple and rapid method for the determination of Cl-and SO_4-（2-） in the absorbent liquid by oxygen flask combustion-ionic chromatogram was developed to monitor the trace component of TATB. Na_2CO_3 solution with a concentration of 4. 7 mmol·mL-（-1）was used as an eluate on an anion separation column of the model Metrosep A Supp 7 and conductivity detection. The method detection limits（ MDL） of Cl-and SO_4-（2-）were 0. 0025 μg·mL-（-1）and 0. 0032 μg·mL-（-1）respectively,under the optimized condition. The linear ranges of Cl-and SO_4-（2-）were（ 500 - 3000） μg·L-（- 1）and（ 100 - 2500） μg·L-（- 1）respectively,and the correlation coefficients were all greater than 0. 9990. The recoveries of the two analytes were 96. 30%- 103. 73% and 97. 23%- 100. 91% with the relative standard deviations（ RSD,n = 6） of 1. 65%,2. 28%. The method has the advantage of simple operation,reagent-free and pollution-free,and can meet the quantitative analysis requirements of sulfur and chlorinous in nano-TATB.

关 键 词：离子色谱 氧瓶燃烧 纳米TATB 微量组分 

分 类 号：TQ560.72[化学工程—炸药化工] O657.7[理学—分析化学]