离子色谱法测定草铵膦含量

Determination of Glufosinate-ammonium by Ion Chromatography

[目的]建立草铵膦原药和草铵膦水剂的离子色谱定量分析方法。[方法]采用8 mmol/L氢氧化钾水溶液为流动相,AS-11离子色谱柱（含AG-11保护柱）以及电导检测器对其有效成分草铵膦进行外标法定量分析。[结果]方法线性相关系数为0.9995（50~250 mg/L）,标准偏差均小于0.08,变异系数均小于0.15%,平均回收率为100.26%。[结论]该方法可用于测定草铵膦原药或草铵膦水剂中的有效成分,具有精密、准确、简便易行的特点。

It was to establish a quantitative analysis method of glufosinate-ammonium（TCAS） by Ion Chromatography（IC）.[Methods] The active ingredient of glufosinate-ammonium was analyzed quantitatively with external standard method using AS-11 ion column（including AG-11 guard column）,conductivity detector and 8 mmol/L potassium hydroxide aqueous solution as mobile phase.[Results] The linear correlation coefficient was 0.9995（50-250 mg/L）,standard deviations was less than 0.08,coefficient of variation was less than 0.15% and average recovery was 100.26%.[Conclusions] The method could be used to detect the active ingredients of glufosinate-ammonium（TCAS）,which was precise,accurate and simple.