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目的:建立衍生化气相色谱法测定食品包装金属制品中游离苯酚的分析方法。方法:样品用水萃取,溴化钾-溴酸钾衍生,气相色谱法测定,外标法定量。结果:样品加标回收率达到98.0%~105.6%,相对标准偏差(RSD)在1.47%~3.10%。结论:实验结果表明,该方法简便、快速,适合食品包装金属制品中游离苯酚的测定。
Objective: To establish a method for the determination of free phenol in food packaging metal by derivatization gas chromatography. Methods: Samples were extracted with water, potassium bromide - potassium bromate, gas chromatography, external standard method. Results: The spiked recoveries reached 98.0% -105.6% with relative standard deviations (RSDs) ranging from 1.47% to 3.10%. Conclusion: The experimental results show that the method is simple, rapid and suitable for the determination of free phenol in food packaging metal products.