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本文报导采用3米天试GDX-01和1米上试402涂20％聚乙二醇-20M为色谱柱,柱温150℃,载气流速30—35毫升N_2/分,上分100型色谱仪氢火焰检测器,工作电流190毫安,能将甲醚、甲醇乙酸甲酯、乙醇、丙烯腈、丙烯酸甲酯、丙烯酸、β-甲氧基丙酸甲酯等组分全部分离,所需时间小于30分钟。同时按组分的锋面积测定了重量相对响应值,可用内标法计算各组分的含量。本法精确度与准确度良好,能适应生产控制分析和产品质量检验的要求。还提出了以热导池检测器,GDX-103有机担体为固定相测定成品丙烯酸甲酯中微量水的条件及用减杂法测定丙烯酸甲酯纯度的方法。
This article reports the use of 3-day test GDX-01 and 1 meter on the test 402 coated with 20% polyethylene glycol -20M column, the column temperature of 150 ° C, the carrier gas flow rate of 30-35 ml N_2 / min, on the sub-100 chromatography Instrument hydrogen flame detector, the working current of 190 mA, can methyl ether, methanol methyl acetate, ethanol, acrylonitrile, methyl acrylate, acrylic acid, β-methoxy propionic acid methyl ester and other components all separated, the required Time is less than 30 minutes. At the same time by the frontal area of the component was measured relative weight value, the internal standard method can be used to calculate the content of each component. The accuracy and accuracy of this Law is good, can adapt to the production control analysis and product quality inspection requirements. A method of measuring the trace water in the finished product methyl methacrylate with the detector of the thermal conductivity pool and the GDX-103 organic carrier as the stationary phase and the method of measuring the purity of the methyl acrylate by the subtractive method are also proposed.