Analytical Method for Quantitative Determination of DNTF by Non-self Standard Sample

To accurately quantify 3, 4-bisnitrofurazanfuroxan (DNTF) in the absence of standard materials, a quantitative method for the determination of non-energetic and non-self standard of DNTF was established by gas chromatography-atomic emission spectroscopy (GC-AED) combined technology. By comparing the carbon element standard curves of DNTF and five non-energetic materials(diphenylamine, benzoic acid, acetanilide, DBS, DBP), the non-energetic material with the relative quantitative response factor closest to 1 was selected as the external standard to quantify the carbon element of DNTF, and then the DNTF was quantified by the molecular formula. The results show that the relative quantitative response factor of benzoic acid is the closest to 1, and the carbon element of DNTF is quantified by the carbon element standard curve of benzoic acid. The linear range of carbon element of DNTF is 17.43-426.92μg/mL, and the correlation coefficient (r) is 0.9992. The detection limit is calculated by three times of the signal-to-noise ratio and the method detection limit of the carbon element of DNTF is 0.0096μg/mL. Under the same conditions, the recoveries of DNTF at high, medium and low concentrations in the linear range are 104.9%,103.7% and 109.4%, and the relative standard deviations are 3.3%,1.1% and 1.5%, respectively. The method has good accuracy and precision, and accurate quantification of DNTF with non-energetic materials as external standards can be achieved in the absence of their own standard materials. © 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.