Using internal standard method, the content of trimethylacetic acid in its synthetic fluid prepared by pressure catalytic process from isobutene and carbon monoxide was measured with packed column.

• 采用内标法,利用填充柱测定了由异丁烯和一氧化碳经加压催化合成三甲基乙酸工艺的合成液中的三甲基乙酸。