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Qian F.,Ningoo Environmental Monitoring Center | Zhu L.,Ningoo Environmental Monitoring Center | Xu N.,Ningoo Environmental Monitoring Center | Feng J.,Ningoo Environmental Monitoring Center | And 4 more authors.
Chinese Journal of Chromatography (Se Pu) | Year: 2014

An ultra performance liquid chromatography/tandem mass spectrometry (UPLC-MS/ MS) method was developed for the determination of picric acid and its reductive transformation product picramic acid in aqueous samples. A hydrophilic interaction liquid chromatography (HILIC) column (Acquity UPLC BEH HILIC; 100mm×2.1mm, 1.7 μm) was used for the separation. Surface water samples could be injected into the UPLC system just after being filtered through a0.2 μm membrane. The satisfactory recoveries of picric acid and picramic acid were in the range of 8996-107%. Waste water samples were purified by solid phase extraction (SPE), and then were analyzed. The recoveries of picric acid and picramic acid in waste water were 7296-101%. The reproducibility of the method was good with the RSDs of 4.996-14.7%. The limits of detection (LODs) of picric acid and picramic acid were 0. 1 μg/L and 0.3 μg/L, respectively. This proposed method is rapid, highly specific and suitable for the confirmation and quantitative determination of picric acid and picramic acid in surface water and waste water.

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