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建立了高效液相色谱(HPLC)-二极管阵列检测器(DAD)检测聚碳酸酯水桶中6种酚类物质的分析方法。比较了不同的提取方式和提取溶剂对目标物的提取效果,并考察了方法的线性、精密度、回收率。结果表明,采用有机溶剂溶解沉淀法,以甲醇为提取溶剂,对6种酚类物质的提取效果最佳。以甲醇-水为流动相,采用梯度洗脱的方式进行HPLC-DAD检测。目标物在0.01~5.0 mg/L范围内呈良好的线性关系,方法平均回收率在86%~99%,相对标准偏差为2.5%~6.2%。方法可用于聚碳酸酯水桶中酚类物质的实际检测。
An analytical method for the determination of six phenolic compounds in polycarbonate buckets by high performance liquid chromatography (HPLC) - diode array detector (DAD) was established. The extraction methods of different extraction methods and extraction solvent were compared, and the linearity, precision and recovery of the method were also investigated. The results showed that the extraction of six phenols was the best by using organic solvent precipitation method and methanol as the extraction solvent. HPLC-DAD was carried out by gradient elution with methanol-water as mobile phase. The target showed a good linear relationship in the range of 0.01-5.0 mg / L. The average recoveries were 86% -99% and the relative standard deviations were 2.5% -6.2%. The method can be used for the actual detection of phenols in polycarbonate buckets.