摘要
建立了用于回收二甲基甲酰胺的气相色谱测定方法。采用不锈钢填充柱(150m×2mm id,80～100目GDX-401固定相),热导检测器。程序升温,初始温度160℃,保持0.2min,升温速率8℃/min,终温180℃。汽化室温度200℃,检测器温度150℃。二甲基甲酰胺的校正因子为1.0382。采用内标法定量,以正丁醇作内标。二甲基甲酰胺质量浓度在0.5039%～99.5%范围内与峰面积呈良好线性关系,回收率99.86%,相对标准偏差0.32%。该方法用于二甲基甲酰胺的回收检测,方便、准确、快捷,既可测样品中的水又可测二甲基甲酰胺。
In order to recover dimethyl formamide, a gas chromatog tector for its determination has been established. A stainless GDX-401, 80-100 mesh） was used. Column temperature was raphic method steel column （ programmed f with thermal conductivity de to 180℃ （held for 30 min） at 15℃/min. The detector temperature was 150℃ and vaporizer temperature was 150℃. The correction factor of dimethy formamide is 1. 0382. Butyl alcohol was used as internal standard for quantitation. Good linear relationship was obtained in the range of 0. 5039%-99.5%. The recovery of standard addition was 99.86 % with RSD of 0.32 %. The method is convenient, accurate and fast. Both dimethyl formamind and water in sample can be determined with this method.
出处
《分析仪器》
CAS
2008年第1期41-43,共3页
Analytical Instrumentation
