液液萃取-气相色谱-质谱法同时测定水质中14种芳香胺  

Simultaneous Determination of 14 Aromatic Amines in Water by Liquid-liquid Extraction with GC-MS

作　　者：唐崇杰 TANG Chongjie(Zhanjiang Ecological Environment Technology Center,Zhanjiang 524000,China)

机构地区：[1]湛江市生态环境技术中心,广东湛江524000

出　　处：《广州化学》2024年第4期75-78,I0004,共5页Guangzhou Chemistry

摘　　要：建立了液液萃取结合气相色谱-质谱测定水中14种芳香胺的方法。优化了RTX-5色谱柱和InertCap For Amines色谱柱的分离条件,考察了固相萃取技术和液液萃取技术两种萃取技术和叔丁基甲醚和二氯甲烷两种萃取溶剂对芳香胺提取效率的影响。结果表明:在优化条件下,样品中14种芳香胺在0~15μg/L范围内线性良好,相关系数均大于0.995;平均加标回收率为79.7%~111.4%,相对标准偏差为5.05%~9.40%(n=6);检出限为0.029~0.074μg/L (n=7),定量限为0.117~0.295μg/L。本文所建立的水质中14种芳香胺定量方法,具有较高的准确度,较好的重复性和较低的检出限,适用于水样中痕量芳香胺的定性定量分析。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 0~15μg/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 0.029~0.074μg/L(n=7),and the limits of quantification for water were 0.117~0.295μg/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.

关 键 词：液液萃取 二氯甲烷 气相色谱-质谱 芳香胺 水 

分 类 号：X830.2[环境科学与工程—环境工程]