Simultaneous Determination of 14 Aromatic Amines in Water by Liquid-liquid Extraction with GC-MS
A method for determination of 14 aromatic amines in environmental water by liquid-liquid extraction combined with gas chromatography-mass spectrometry was established.The chromatographic separation conditions were optimized(chromatographic column of RTX-5 and chromatographic column of InertCap For Amines),and the effects of different extraction techniques(solid phase extraction(SPE)and liquid-liquid extraction(LLE))and different extraction solvents(methyl tert-butyl ether(MTBE)and dichloromethane on the extraction efficiency of aromatic amines were investigated.Under the optimized conditions,the linearity of AAs is good within the range of 0～15 μg/L,the correlation coefficients were more than 0.995.The average recovers of the water samples were 79.7%～111.4%,and the relative standard deviations were less than 5.05%～9.40%(n=6).The limits of detection for water were 0.029～0.074 μg/L(n=7),and the limits of quantification for water were 0.117～0.295 μg/L.The results indicate that this method was established in this article have high accuracy,good repeatability and low detection limit,it is suitable for the qualitative and quantitative analysis of trace AAs in water samples.
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