本文报导了聚合松香中二聚体含量的GC法测定。样品用四氢呋喃溶解,加6％(CH_3)_4NOH使样品中树脂酸完全酯化,酯化液在色谱注射口内温度下转化为甲酯并气化,以高纯氮为载气,进入色谱柱完全分离,通过Pye104GC的FID进行测定,用面积归一化法计算含量。本法定量准确,误差小于2％,分析一个样品需24分钟。 This article reports the determination of the dimer content of polymerized rosin by GC. The sample was dissolved in tetrahydrofuran, and 6% (CH_3) _4NOH was added to completely esterify the resin acid in the sample. The esterified liquid was converted to methyl ester at the temperature of the chromatographic injection port and gasified. High purity nitrogen was used as the carrier gas to enter the column completely Separated, determined by the FID of Pye104GC, and the area was normalized to calculate the content. This law is accurate and accurate, the error is less than 2%, analysis of a sample takes 24 minutes.