Gc - ms analysis of unsymmetrical dimethylhydrazine and its initial oxidation products 质谱法分析偏二甲肼初期氧化产物
Weakness of trace impouring imprecisely was avoided by mixing udmh and internal standard solution 用内标与偏二甲肼混合样品,避免了微量进样不准确的缺陷。
Gas chromatographic internal standard method was considered to determine purity for 1 , 1 - dimethylhydrine ( udmh ) instead of the standard working curve method 研究了气相色谱内标法代替常规的标准工作曲线法测定偏二甲肼纯度( udmh ) 。