超高效亲水作用色谱-串联质谱法检测水中的苦味酸及苦氨酸
CHINESE JOURNAL OF CHROMATOGRAPHY(2014)
Abstract
建立了一种超高效亲水作用色谱-串联质谱检测水中苦味酸及其降解产物苦氨酸的方法。采用 Acquity UP-LC BEH HILIC亲水作用色谱柱(100 mm×2.1 mm,1.7μm,Waters)分离,用电喷雾电离串联质谱检测。地表水样品经过0.2μm滤膜过滤之后即可直接进样,加标回收率达89%~107%;废水样品通过固相萃取( SPE)净化后进样分析,加标回收率达72%~101%。方法重复性的相对标准偏差为4.9%~14.7%。本方法对苦味酸和苦氨酸的检出限分别为0.1μg/L和0.3μg/L。此方法快速、准确,特异性强,灵敏度高,样品前处理方法简便易行,适用于地表水、废水样品的检测。
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Key words
ultra performance liquid chromatography (UPLC), hydrophilic interaction liquid chromatography (HILIC), tandem mass spectrometry (MS/MS), picric acid, picramic acid
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