caa a22 4500 44588102X CHVBK 20180317145543.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s00604-011-0574-7 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0574-7 Determination of Se(IV) using solidified floating organic drop microextraction coupled to ultrasound-assisted back-extraction and hydride generation atomic fluorescence spectrometry [Elektronische Daten] [Yang Wang, Xiaoyu Luo, Jie Tang, Xiaoya Hu] A method is presented for matrix separation, preconcentration and determination by hydride generation atomic fluorescence spectrometry of trace amounts of Se(IV). It is based on solidified floating drops of 1-undecanol that are capable of extracting the target analyte after chelation with a water soluble ligand and subsequent ultrasound-assisted back-extraction into a aqueous solution. Hydride generation was then accomplished by reaction with a solution of sodium borohydride. Under optimized conditions, an enrichment factor of 15 and a linear calibration plot in the range from 0.01 to 5.0μg L−1 were achieved using a 10.0mL sample. The detection limit (3σ) is 7.0ng L−1, and the relative standard deviation (RSD) is 2.1% at 1.0μg L−1 (n = 11). The method was applied to determination of Se(IV) in different real water samples through recovery experiments and subsequently validated against two certified reference materials. A solidified floating organic drop microextraction coupled with hydride generation atomic fluorescence spectrometry for the determination of Se(IV) is described. Springer-Verlag, 2011 Solidified floating organic drop microextraction nationallicence Ultrasound-assisted back-extraction nationallicence Hydride generation atomic fluorescence spectrometry nationallicence Se(IV) nationallicence Wang Yang College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut Luo Xiaoyu College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut Tang Jie College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut Hu Xiaoya College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 267-273 0026-3672 173:1-2<267 2011 173 604 https://doi.org/10.1007/s00604-011-0574-7 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0574-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Yang College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut NATIONALLICENCE 700 1- Luo Xiaoyu College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut NATIONALLICENCE 700 1- Tang Jie College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut NATIONALLICENCE 700 1- Hu Xiaoya College of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 267-273 0026-3672 173:1-2<267 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer