caa a22 4500 445880708 CHVBK 20180317145542.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00604-011-0577-4 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0577-4 Application of ultrasound-assisted ionic liquid dispersive liquid-phase microextraction followed high-performance liquid chromatography for the determination of fungicides in red wine [Elektronische Daten] [Suli Wang, Liping Ren, Yanjun Xu, Fengmao Liu] A new method was developed for the determination of fungicides in red wine using ultrasound-assisted ionic liquid dispersive liquid-phase microextraction followed by high-performance liquid chromatography. The ionic liquid, 1-hexyl-3-methylimidazolium hexafluorophosphate (IL) was quickly disrupted by ultrasonication and dispersed in wine as fine droplets. At this stage, the analytes were extracted into the fine droplets of IL. After centrifugation, the concentration of the enriched fungicides in the sedimented phase was determined. Extraction conditions including the type of extraction solvent, the extraction solvent volume, ultrasonication time, centrifugation time and sample pH were optimized. The performance of the method was studied in terms of linearity, precision, and recovery. Quantitative recoveries (>70%) except for pyrimethanil were obtained, and method precision was also satisfactory (RSD < 10%). Enrichment factors range from 100 to 200, and the limits of detection are at the low μg per liter level for most of the target compounds. Figure The typical chromatograms of spiking at the concentration level 50μgL−1 of each analytes in a red wine. (1) pyrimethanil (2) fenarimol (3) epoxiconazole (4) kresoxim-methyl (5) cypronidil (6) prochloraz (7) diniconazole Springer-Verlag, 2011 Ultrasound-assisted extraction nationallicence Ionic liquids nationallicence Dispersive liquid-phase microextraction nationallicence Red wine nationallicence Fungicides nationallicence HPLC nationallicence Wang Suli China Agricultural University, 100193, Beijing, the People's Republic of China aut Ren Liping China Agricultural University, 100193, Beijing, the People's Republic of China aut Xu Yanjun China Agricultural University, 100193, Beijing, the People's Republic of China aut Liu Fengmao China Agricultural University, 100193, Beijing, the People's Republic of China aut Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 453-457 0026-3672 173:3-4<453 2011 173 604 https://doi.org/10.1007/s00604-011-0577-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0577-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Suli China Agricultural University, 100193, Beijing, the People's Republic of China aut NATIONALLICENCE 700 1- Ren Liping China Agricultural University, 100193, Beijing, the People's Republic of China aut NATIONALLICENCE 700 1- Xu Yanjun China Agricultural University, 100193, Beijing, the People's Republic of China aut NATIONALLICENCE 700 1- Liu Fengmao China Agricultural University, 100193, Beijing, the People's Republic of China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 453-457 0026-3672 173:3-4<453 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer