caa a22 4500 44587984X CHVBK 20180317145539.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s00604-010-0458-2 doi (NATIONALLICENCE)springer-10.1007/s00604-010-0458-2 Dispersive liquid-liquid microextraction based on solidification of floating organic droplet method for the determination of diethofencarb and pyrimethanil in aqueous samples [Elektronische Daten] [Jing Cheng, Jing Xiao, Yiwen Zhou, Yating Xia, Feng Guo, Junkai Li] A dispersive liquid-liquid microextraction method was developed for the determination of fungicides (diethofencarb and pyrimethanil) in aqueous samples. It is based on the use of solidified floating organic drops combined with high-performance liquid chromatography. Extraction solvent and dispersive solvent, extraction time and salt effect were optimized. Under optimized conditions, the enrichment factors for a 5mL water sample are between 145 and 161. The limits of detection for diethofencarb and pyrimethanil are 0.24 and 0.09μg ∙ L−1, respectively. The method offers good repeatability and high recovery. Compared with dispersive liquid-liquid microextraction, it has a higher enrichment factor, high precision due to the ease with which the solidified floating phase is transferred, thus avoiding the loss of analyte. Toxic solvents were replaced by 1-dodecanol with its much lower toxicity. The method has been successfully applied to the determination of the two fungicides in tap water, lake water, and river water. Springer-Verlag, 2010 Extraction methods nationallicence Water analysis nationallicence Diethofencarb nationallicence Pyrimethanil nationallicence DLLME-SFO nationallicence Cheng Jing Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, China aut Xiao Jing Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, China aut Zhou Yiwen Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, China aut Xia Yating Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, China aut Guo Feng Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, China aut Li Junkai School of Agriculture, Yangtze University, 434025, Jinzhou, China aut Microchimica Acta Springer Vienna 172/1-2(2011-02-01), 51-55 0026-3672 172:1-2<51 2011 172 604 https://doi.org/10.1007/s00604-010-0458-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-010-0458-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cheng Jing Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, China aut NATIONALLICENCE 700 1- Xiao Jing Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, China aut NATIONALLICENCE 700 1- Zhou Yiwen Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, China aut NATIONALLICENCE 700 1- Xia Yating Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, China aut NATIONALLICENCE 700 1- Guo Feng Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, China aut NATIONALLICENCE 700 1- Li Junkai School of Agriculture, Yangtze University, 434025, Jinzhou, China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 172/1-2(2011-02-01), 51-55 0026-3672 172:1-2<51 2011 172 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer