[Combined application of gas and mass chromatography for determination of 2, 5-hexanedione].
Yingyu Huang, Weiping Xie, Huirong Fu, Gui-lian Hu
Abstract
Yingyu Huang, Weiping Xie, Huirong Fu, Gui-lian Hu
Abstract
目的 建立测定尿中2,5-己二酮的毛细管气质联用测定法.方法尿样经酸化后,用乙酸乙酯提取,提取液用气相色谱-质谱联用仪进行检测,利用保留时间和化合物特征离子定性,选择离子法定量.结果取样2.0ml,提取液1.0ml,进样1.0 μl,分流比为10:1,尿中2,5-己二酮的线性范围为0.25~15.00mg/L;相对标准偏差(RSD)为1.75%~4.99%;加标回收率为92.0%~106.8%;检测限(LOD)为0.028 mg/L;定量限(LOQ)为0.25mg/L.结论建立的方法灵敏度高,干扰少,可靠性优于气相色谱法,适用于尿中2,5-己二酮含量的测定。
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目的 建立测定尿中2,5-己二酮的毛细管气质联用测定法.方法尿样经酸化后,用乙酸乙酯提取,提取液用气相色谱-质谱联用仪进行检测,利用保留时间和化合物特征离子定性,选择离子法定量.结果取样2.0ml,提取液1.0ml,进样1.0 μl,分流比为10:1,尿中2,5-己二酮的线性范围为0.25~15.00mg/L;相对标准偏差(RSD)为1.75%~4.99%;加标回收率为92.0%~106.8%;检测限(LOD)为0.028 mg/L;定量限(LOQ)为0.25mg/L.结论建立的方法灵敏度高,干扰少,可靠性优于气相色谱法,适用于尿中2,5-己二酮含量的测定。
Key concepts: Chromatography, Gas chromatography, Chemistry, Environmental chemistry