离子色谱法测定炸药FOX7中3种阴离子

Determination of Three Anions in FOX7 by Ion Chromatography

建立了测定炸药FOX7中3种阴离子的离子色谱分析方法,并用该方法测定了炸药FOX7。采用离子色谱检测法,以Metrosep A Supp5-250型阴离子柱为色谱柱;3.2 mmol/L Na2CO3+1.0 mmol/L Na HCO3为流动相,流速为0.7 m L/min。结果表明:测定SO2-4、NO-3、Cl-三种离子的精密度试验、重复性试验、加样回收率试验的RSD均小于3.0%,平均回收率(n=6)分别为99.1%,98.4%和99.0%。方法快速,准确,可用于炸药FOX7的质量控制。

An ion chromatography method was established for determining of three kinds of anions in FOX7 simultaneously. Ion chromatography was used. The anions were analyzed on Metrosep A Supp5-250 anion exchange column and the mobile phase consisted of 3. 2 mmol / L Na2CO3＋ 1. 0 mmol / L Na HCO3. The flow rate was 0. 7 m L / min.The RSD of precision test,reproducibility test and recovery test were all less than 3%. The average recoveries（ n = 6）were 99. 1% for SO2-4,98. 4% for NO-3and 99. 0% for Cl-,respectively. A rapid,sensitive and accurate method for the determination of three kinds of anions was founded. This study may provide a scientific basis for the quality control of FOX7.