Determination of nitrobenzenes and nitrochlorobenzenes in water samples using dispersive liquid-liquid microextraction and gas chromatography-mass spectrometry

被引：16

作者：

Zhang, Delin ^{[1
,2
]}

Zeng, Xiangying ^{[1
]}

Yu, Zhiqiang ^{[1
]}

Sheng, Guoying ^{[1
]}

Fu, Jiamo ^{[1
]}

机构：

[1] Chinese Acad Sci, State Key Lab Organ Geochem, Guangdong Prov Key Lab Utilizat & Protect Environ, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

ANALYTICAL METHODS | 2011年 / 3卷 / 10期

关键词：

SOLID-PHASE MICROEXTRACTION; ELECTRON-CAPTURE DETECTION; NITROAROMATIC COMPOUNDS; POLYCHLORINATED-BIPHENYLS; SENSITIVE METHOD; AQUEOUS SAMPLES; EXPLOSIVES; OPTIMIZATION; IONIZATION; PESTICIDES;

D O I：

10.1039/c1ay05044c

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A rapid and sensitive method was developed for the determination of eight nitrobenzenes and four nitrochlorobenzenes in water. The method is based on dispersive liquid-liquid microextraction (DLLME) followed by gas chromatography-mass spectrometry (GC-MS). The key factors influencing the extraction efficiencies, including the nature and volume of the extraction and dispersion solvent and the ratios of the extraction solvent and dispersion solvent were examined and optimized. Under the ptimized conditions, the method yields a linear correlation at a concentration range of 0.5 mu g L-1-500.0 mu g L-1 for all the target analytes with correlation coefficients (R-2) of 0.9915 to 1.0000, and relative standard deviations (RSD, n = 6) of between 4.9% and 8.2%, depending on the compound analysed. In addition, good pre-concentration factors of 243 to 525 for each specific compound were achieved. These results suggest that the method presented herein is a rapid and powerful microextraction technique that is useful for the detection of these organic pollutants in water samples and is suitable for emergency monitoring.

引用

页码：2254 / 2260

页数：7

共 29 条

[1] Compound-specific nitrogen and carbon isotope analysis of nitroaromatic compounds in aqueous samples using solid-phase microextraction coupled to GC/IRMS [J].