Bell-shaped extraction device assisted liquid-liquid microextraction technique and its optimization using response-surface methodology

Journal of Chromatography. a
Radomír Čabala, Miroslava Bursová

Abstract

We have developed a new microextraction technique for equilibrium, non-exhaustive analyte preconcentration from aqueous solutions into organic solvents lighter than water. The key point of the method is application of specially designed and optimized bell-shaped extraction device, BSED. The technique has been tested and applied to the preconcentration of selected volatile and semi volatile compounds which were determined by gas chromatography/mass spectrometry in spiked water samples. The significant parameters of the extraction have been found using chemometric procedures and these parameters were optimized using the central composite design (CCD) for two solvents. The analyte preconcentration factors were in a range from 8.3 to 161.8 (repeatability from 7 to 14%) for heptane, and 50.0-105.0 (repeatability from 0 to 5%) for tert-butyl acetate. The reproducibility of the technique was within 1-8%. The values of limits of detection and determination were 0.1-3.3 ng mL(-1) for heptane and 0.3-10.7 ng mL(-1) for tert-butyl acetate. The new microextraction technique has been found to be a cheap, simple and flexible alternative to the common procedures, such as SPME or LLME. This BSED-LLME technique can also be combined with other s...Continue Reading

References

Jul 30, 2003·Journal of Chromatography. a·Elefteria Psillakis, Nicolas Kalogerakis
Apr 1, 2006·Journal of Chromatography. a·Mohammad RezaeeSana Berijani
Dec 17, 2008·Journal of Chromatography. a·Constantine StalikasTriantafyllos Albanis

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Citations

Dec 3, 2014·Journal of Chromatography. a·Yunyan YanXiaohong Bai
Aug 20, 2014·Journal of Separation Science·Mostafa JafariSaied Saeed Hosseiny Davarani
Oct 6, 2018·Journal of Separation Science·Martina HavlikovaZuzana Bosakova
Mar 1, 2019·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Mahsa Sadat HosseininejadAhmad Jamshidi
Aug 20, 2019·Journal of Chromatography. a·Luis Felipe Rodríguez CabalÁlvaro Jose Santos-Neto
Mar 10, 2016·Journal of the American Society for Mass Spectrometry·Elizabeth S HechtDavid C Muddiman

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