scholarly journals Symmetrical 1,3-Dialkylimidazolium Ionic Liquid Based Single-Drop Microextraction Coupled to GC-MS for the Determination of Esters in Natural Flavors

2012 ◽  
Vol 70 (15) ◽  
pp. 1625 ◽  
Author(s):  
Ming Li ◽  
Zaijun Li ◽  
Guanyan Li ◽  
Linjie Chen ◽  
Lina Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Single Drop ◽  
Single Drop Microextraction ◽  
Natural Flavors

(CdSe/ZnS QDs)-ionic liquid-based headspace single drop microextraction for the fluorimetric determination of trimethylamine in fish

The Analyst ◽  
2012 ◽  
Vol 137 (5) ◽  
pp. 1152 ◽  
Author(s):  
Carolina Carrillo-Carrión ◽  
Bartolomé M. Simonet ◽  
Miguel Valcárcel
Keyword(s):  
Ionic Liquid ◽  
Single Drop ◽  
Fluorimetric Determination ◽  
Single Drop Microextraction

Determination of Trace PCB in Water by GC-MS with Ionic Liquid Based Headspace Single-Drop Microextraction under Ultrasound

2013 ◽  
Vol 726-731 ◽  
pp. 74-80 ◽  
Author(s):  
Shi Wei He ◽  
Chen Yi Shen ◽  
Xiao Qin Wei ◽  
Mi Cong Jin ◽  
Mei Qiang Cai
Keyword(s):  
Ionic Liquid ◽  
Salt Effect ◽  
Signal To Noise Ratio ◽  
Extraction Temperature ◽  
Single Drop ◽  
Single Drop Microextraction ◽  
Experimental Parameters ◽  
Chromatographic Instrument ◽  
Extracting Agents

An accurate and sensitive method has been developed for the determination of PCBs in water by gas chromatography coupled with mass spectrometry (GC/MS) with ionic liquid based headspace single-drop microextraction under ultrasound. The sample injection part of gas chromatographic instrument was modifed to avoid the ionic liquid leaking, selected 1-butyl-3-methylimidazolium hexafluorophosphate ([C4MI[PF6]) as extracting agents. Experimental parameters influencing the extraction performance, such as desorption temperature, ultrasound extraction time, extraction temperature, ionic liquid headspace volume and salt effect, were optimized. Calibration curve was linear within the range of 10~300.0 μg/L, and the extraction recoveries with RSD values lower than 9.1% were from 77.6% to 103.3%. The limits of detections (LOD), calculated on the basis of signal-to-noise ratio of 3 (S/N=3), was in the range of 0.005~0.007 μg/L. This method is found to be simple, sensitive, little interferential and good specificity for the determination of trace PCBs in water. Real sea sample was successfully analyzed using this method.

Determination of 2,4,6-tricholoroanisole in water and wine samples by ionic liquid-based single-drop microextraction and ion mobility spectrometry

2011 ◽  
Vol 702 (2) ◽  
pp. 199-204 ◽  
Author(s):  
Isabel Márquez-Sillero ◽  
Eva Aguilera-Herrador ◽  
Soledad Cárdenas ◽  
Miguel Valcárcel
Keyword(s):  
Ionic Liquid ◽  
Ion Mobility Spectrometry ◽  
Ion Mobility ◽  
Single Drop ◽  
Single Drop Microextraction
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