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建立了同时测定再生水中双酚A、17β-雌二醇、炔雌醇、雌酮和4-壬基酚含量的超高效液相色谱-串联质谱法。5种雌激素在0.2~250μg/L浓度范围内线性关系良好,回归方程相关系数均大于0.997 6,检出限(S/N=3)和定量限(S/N=10)范围分别为0.09~0.28 ng/L和0.30~0.87 ng/L。在添加水平分别为1、10、100 ng/L时,低浓度(1 ng/L)平均回收率为78%~109%,RSD为5.5%~20%;中浓度(10 ng/L)平均回收率为75%~115.3%,RSD为6.7%~15%;高浓度(100 ng/L)平均回收率为89.2%~107.3%,RSD为3.3%~15.5%。该方法操作简单高效、灵敏度高,适用于再生水中5种雌激素的定量分析。
A simultaneous determination of bisphenol A, 17β-estradiol, ethinylestradiol, estrone and 4-nonylphenol in reclaimed water by ultra performance liquid chromatography-tandem mass spectrometry was established. The linearity of the five estrogens in the range of 0.2-250 μg / L was good, and the correlation coefficient of the regression equation was more than 0.997 6. The limits of detection (S / N = 3) and the limit of quantitation (S / N = 10) were 0.09 ~ 0.28 ng / L and 0.30 ~ 0.87 ng / L. The average recoveries of low concentration (1 ng / L) ranged from 78% to 109% with RSD of 5.5% ~ 20% at the concentration of 1, 10 and 100 ng / The average recoveries of high concentration (100 ng / L) ranged from 89.2% to 107.3% and RSD ranged from 3.3% to 15.5%. The average recovery was 75% ~ 115.3% with RSD of 6.7% ~ 15%. The method is simple and efficient to operate and has high sensitivity and is suitable for the quantitative analysis of five estrogens in reclaimed water.