本工作对α-乙酰基-γ-丁内酯与Fe3+的显色条件进行了系统的研究。结果表明:在酸性水溶液中,α-乙酰基-γ-丁内酯与Fe3+生成紫色的稳定配合物,最大吸收波长位于555nm处,其吸光度值与α-乙酰基-γ-丁内酯浓度在0.05%~0.50%范围内符合朗伯比尔定律,相关系数为0.9999,加标回收率为98.52%~101.22%。该法用于α-乙酰基-γ-丁内酯工业化生产过程中的质量控制,获得与气相色谱测定相吻合的结果。 In this work, the conditions for the color development of α-acetyl-γ-butyrolactone and Fe3 + were systematically studied. The results showed that the stable complex formed with α-acetyl-γ-butyrolactone and Fe3 + in acidic aqueous solution has a maximum absorption wavelength at 555 nm, and the absorbance value is in agreement with the concentration of α-acetyl-γ-butyrolactone The range of 0.05% to 0.50% is Lambert’s law, the correlation coefficient is 0.9999, and the recoveries are in the range of 98.52% ~ 101.22%. This method is used for the quality control in the industrialized production of α-acetyl-γ-butyrolactone, and the result is consistent with the gas chromatographic determination.