改性双基推进剂中HMX含量的高效液相色谱测定

Determination of Octogen in Composite Modified Double-base Propellant by HPLC

建立了一种准确测定硝化棉(NC)与奥克托今(HMX)共存分离的高效液相色谱(HPLC)分析方法,样品制备采取乙腈溶解水析出法;HPLC外标法测定HMX的含量,结果表明在HMX含量为21%时相对偏差为0.82,加标回收率为99.62%。

Octogen HMX is separated from nitrocellulose by acetonitrile dissolved water separated out in composite modified doublebase propellant and determined by HPLC on C18 alkyl-bond column （4.6mm ×200mm, 10μm） ,using a mixture of acetonitrile and water with the ratio of 46 to 54 by volume as the mobile phase, at a flow-rate of 1.0 mL·min^-1 , UV-detection at 254 nm for the final determination. Tests for relative standard deviation and recovery are made： 0. 82% for relative standard deviation＇s and 99.62% for recovery are obtained for octogen at the content of 21% by quality in propellant .