采用 HP- 84 5 2 A二极管阵列分光光度计 ,测定了共轭亚油酸、共轭亚油酸乙酯、α-亚麻酸、α-亚麻酸乙酯在紫外和可见区的吸光度 ,绘制了样品在紫外区和可见区的吸收谱图 ,从物理光学透明体颜色形成原理的角度 ,对比了最大吸光度值和最大吸收波长的位置 ;减压蒸馏出了无色的共轭亚油酸和共轭亚油酸乙酯 ,从而得出结论 :共轭亚油酸及其乙酯应当是没有颜色的 Absorbance of conjugated linoleic acid, conjugated linoleic acid ethyl ester, α-linolenic acid, and α-linolenic acid ethyl ester in the ultraviolet and visible regions was measured using a HP-84 5 2 A diode array spectrophotometer and plotted The absorption spectra of the samples in the UV region and the visible region were compared with the maximum absorbance value and the position of the maximum absorption wavelength from the perspective of the color formation principle of the optically transparent body. The colorless conjugated linoleic acid Y-linolenic acid ethyl ester, concluding that conjugated linoleic acid and its ethyl ester should be colorless