Journal
ANALYTICAL METHODS
Volume 3, Issue 4, Pages 831-836Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0ay00708k
Keywords
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Funding
- Natural Science Foundation of Shandong Province [ZR2010BL029]
- Scientific and Technological Developing Project of Shandong Province [2009GG20001021-9]
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences [KF2010-25]
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In this paper, a new ionic liquid/ionic liquid dispersive liquid-liquid microextraction (IL/IL-DLLME) procedure has been developed for the rapid enrichment and determination of three hexabromocyclododecane diastereomers (alpha-, beta- and gamma-HBCD) in environmental water samples prior to rapid resolution liquid chromatography-electrospray tandem mass spectrometry (RRLC-ESI-MS/MS). In the IL/IL-DLLME procedure, two kinds of ionic liquids (ILs), a hydrophobic IL and a hydrophilic IL, were used as an extraction solvent and a disperser solvent, respectively. Some important parameters that might affect the extraction efficiencies were optimized. Under the optimum conditions, the limits of detection could reach 0.12-0.22 mu g L-1, and the precisions were 4.1-6.7% (n = 7). The linear range was obtained over the range 1-100 mu g L-1 for the total concentration of the three HBCD diastereomers. It was satisfactory to analyze real environmental water samples with the recoveries ranging from 88.0 to 114%. All these facts indicated that the IL/IL-DLLME procedure would be a simple alternative for the rapid enrichment and analysis of pollutants in environmental water samples.
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