高效液相色谱法测定饮料中的乙醛含量

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Abstract： To investigate the determination of acetaldehyde in drinks by high performance liquid chromatography， the samples were derivated with 2，4-dinitrophenylhydrazine for 40min in a 50% drying oven. The samples were extracted with n-hexane.The mobile phase was acetonitrile and water （the volume ratio of acetonitrile and water is 7O to 3O），and the samples were extracted with n-hexane and determined at 363nm The results showed that acetaldehyde had linear relationship with the chromatograph peak area in the mass concentration range of （20 0mg⋅L-1 to 2mg⋅L-1 ，with a correlation coefficient of 0.999 1，and the relative standard deviation of precision experiments were 0.49% 0 （n=6） ，and the recoverieswere 88% to 98% .The limit of detection was 0.02mg-L-1 ， the limit of quantification was 0.06mg.L-1 .This method is simple， fast， highly sensitive，and reproducible，which is applicable to the detection of acetaldehyde content in drinks.

Keywords： acetaldehyde; drinks; high performance liquid chromatography

乙醛作为一种广泛存在于环境中的醛类污染物，属于2类致癌物[1]。（剩余4066字）