caa a22 4500 445803827 CHVBK 20180317145150.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s10337-011-2048-9 doi (NATIONALLICENCE)springer-10.1007/s10337-011-2048-9 Ultrasound-Assisted Dispersive Liquid-Liquid Microextraction Combined with Low Solvent Consumption for Determination of Polycyclic Aromatic Hydrocarbons in Seawater by GC-MS [Elektronische Daten] [Xingliang Song, Jinhua Li, Chunyang Liao, Lingxin Chen] Ultrasound-assisted dispersive liquid-liquid microextraction (USA-DLLME) with low solvent consumption was demonstrated for gas chromatography-mass spectrometry (GC-MS) determination of 16 typical polycyclic aromatic hydrocarbons (PAHs) in seawater samples. Factors affecting the extraction process, such as extraction and dispersive solvent, phase ratio, temperature, extraction and centrifugation time, were investigated thoroughly and optimized. The linear range was 20-2,000ng L−1 except for acenaphthylene (Acy) at 10-2,000ng L−1 and phenanthrene (Phe), fluoranthene (Flu) and pyrene (Py) all at 5-2,000ng L−1. Enrichment factors (EFs) ranging from 722 to 8,133 were obtained, achieving limits of detection at 1.0-10.0ng L−1. The method attained good precision (relative standard deviation, RSD) from 3.4 to 14.2% for spiked 50ng L−1 individual PAHs standards. Method recoveries were in the range 87-124% and 70-127% for spiked samples from simulated seawater and beach seawater, respectively. The proposed USA-DLLME helped to obtain about 1.1-10 times higher EFs in a minimum amount of solvent and in less time than traditional DLLME. Springer-Verlag, 2011 Polycyclic aromatic hydrocarbons nationallicence Ultrasound-assisted dispersive liquid-liquid microextraction nationallicence Seawater samples nationallicence Gas chromatography-mass spectrometry nationallicence Song Xingliang Department of Chemistry, Linyi University, 276005, Linyi, China aut Li Jinhua Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 264003, Yantai, Shandong Province, China aut Liao Chunyang Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 264003, Yantai, Shandong Province, China aut Chen Lingxin Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 264003, Yantai, Shandong Province, China aut Chromatographia Springer-Verlag 74/1-2(2011-07-01), 89-98 0009-5893 74:1-2<89 2011 74 10337 https://doi.org/10.1007/s10337-011-2048-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10337-011-2048-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Song Xingliang Department of Chemistry, Linyi University, 276005, Linyi, China aut NATIONALLICENCE 700 1- Li Jinhua Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 264003, Yantai, Shandong Province, China aut NATIONALLICENCE 700 1- Liao Chunyang Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 264003, Yantai, Shandong Province, China aut NATIONALLICENCE 700 1- Chen Lingxin Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 264003, Yantai, Shandong Province, China aut NATIONALLICENCE 773 0- Chromatographia Springer-Verlag 74/1-2(2011-07-01), 89-98 0009-5893 74:1-2<89 2011 74 10337 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer