气相色谱法同时测定醇酸类油漆中苯系物

DETERMINATION OF BENZENE,TOLUENE,AND XYLENE IN SOLVENT PAINT BY GC

用乙酸乙酯稀释油漆样品,在汽化温度下直接进样,采用PEG-20M毛细管柱,FID为检测器,用气相色谱法测定了醇酸类油漆中的苯、甲苯和二甲苯,内标法定量。测定结果的回收率为97.21%～100.66%,相对标准偏差不大于1.3%(n=4)。

The solvent paint samples were diluted by ethyl acetate, and then directly injected in vaporization temperature. Bbenzene, toluene, and xylene in samples were determined by GC with detector of FID, using internal standard method. The recoveries were 97.21% - 100.66% , and the RSD was 1.3% （n= 4）.