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液相色谱分析片状PBX中PETN含量

Determination of PETN Content in PBX by High Performance Liquid Chromatography
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摘要 为获得片状高聚物粘结炸药(PBX)中季戊四醇四硝酸酯(PETN)的准确含量,采用高选择性和灵敏度的高效液相色谱仪,以SB-C18(4.5mm×250mm,5μm)色谱柱,紫外检测器,体积比70/30的乙腈-水溶液作流动相,在225nm检测波长下以1.0mL·min-1的流速对片状季戊四醇四硝酸酯(PETN)基PBX样品溶液进行测试。研究了样品处理方式、样品量和溶剂对测量结果的影响。结果表明:将片状PBX炸药剪细成1.0mm3左右的颗粒后称取200mg置于100mL容量瓶中,用乙腈超声溶解30min后静置16h,测试结果与理论值接近,其重复性测试结果的相对标准偏差为0.13%。PETN的检测限为0.054μg·mL-1,在0.8—2.0mg·mL-1。的范围内线性关系良好,线性相关系数为0.9994。 A selective and sensitive high performance liquid chromatography(HPLC) was optimized for quantitative analysis of pentaerythritol tetranitrate( PETN ) based polymer bonder explosive (PBX) with conditions of SB-C18 column(4.5 min×250 mm, 5 μm), UV detector, mobile phase V(acetonitrile) : V(water)= 70 : 30, flow rate of 1.0 mL ·min-1 and detection wavelength 225 nm. The influences of sample treat method, sample mass and solvent were studied. Results show that the relative standard deviation of reproducibility is 0.13% when PBX sample is cutted to granule (volume 1.0 mm3 , mass 200 rag) in 100 mL flask and ultrarsonic dissolved 30 rain by acetonitrile and then stands for 16 h. The detection limit for PETN is 0.054 μg· mL-1 and there is a good linear between the peak areas and the mass concentration of 0. 8-2.0 mg · mL-1 with linear correlation coefficients of 0. 9994.
出处 《含能材料》 EI CAS CSCD 北大核心 2016年第7期686-691,共6页 Chinese Journal of Energetic Materials
基金 国家自然科学基金资助(11502250)
关键词 高聚物粘结炸药(PBX) 季戊四醇四硝酸酯(PETN) 高效液相色谱 polymer bonder explosive (PBX) pentaerythritol tetranitrate ( PETN ) high performance liquid chromatography (HPLC)
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