研究了用气相色谱法测定新型磷系阻燃剂———甲基膦酸二甲酯 (DMMP)含量的方法 ,色谱柱采用的是 1.5m× 3.5mm不锈钢填充柱 ,10 %siliconeoilXE6 0作固定液。该方法的变异系数为 0 .5 5 %～ 1.2 0 % ,平均回收率为 99.2 7%～ 10 0 .5 %。实验结果表明 ,该方法分析速度快 ,且线性范围宽 ,分析结果准确可靠 A new method for the determination of dimethyl phosphonomethylphosphate (DMMP), a new type phosphorus-based flame retardant, was developed by using gas chromatography. The column was packed with stainless steel 1.5m × 3.5mm stainless steel column and fixed with 10% siliconeoil XE 60 liquid. The coefficient of variation of this method was 0.55% -1.2 0%, and the average recovery was 99.2 7% -105.5%. Experimental results show that this method has the advantages of fast analysis speed, wide linear range, accurate and reliable analysis results