气相色谱法分析检测产品中磷酸二丁酯和磷酸三丁酯

Determination of Dibutyl Phosphate and Tributyl Phosphate in Products by Gas Chromatography

利用毛细管色谱法建立了磷酸二丁酯(DBP)和磷酸三丁酯(TBP)的分析检测方法。实验测得,DBP和TBP在1~100μg/L浓度范围内线性关系良好(R^(2)≥0.9995),检出限(S/N=3)为0.04~0.06μg/L,定量限(S/N=10)为0.16~0.25μg/L,日内与日间检测的相对标准偏差分别为2.1%~4.3%(n=3)、2.5%~5.8%(n=3)。采用新建方法检测企业的DBP/TBP实际产品,加标回收率为90.1%~108.2%,相对标准偏差为2.1%~6.5%(n=3)。方法操作简便、快速灵敏、准确可靠,适用于DBP和TBP实际检测应用和产品质量控制。

A new determination was developed for dibutyl phosphate(DBP)and tributyl phosphate(TBP)with gas chromatography.The linear relationship for DBP and TBP had been observed in the range of 1~100μg/L(R^(2)≥0.9995)with limits of detection(LOD)and limits of quantification(LOQ)of 0.04~0.06μg/L(S/N=3)and 0.16~0.25μg/L(S/N=10),respectively.The relative standard deviations for intra-day were 2.1%~4.3%(n=3)and that for inter-day were 2.5%~5.8%(n=3).Applied to the real products detections,the spiked recoveries were between 90.1%and 108.2%with the relative standard deviations(RSDs)from 2.1%to 6.5%(n=3).The results showed that the method was simple,sensitive and specific,and applicable for quality control of DBP and TBP.