Dispersive Liquid-Liquid Microextraction Combined with Gas Chromatography-Mass Spectrometry for the Determination of Multiple Pesticides in Celery

被引:27
|
作者
Wang, Yaru [1 ]
Miao, Xuexue [2 ]
Wei, Haifeng [1 ]
Liu, Deyun [1 ]
Xia, Gaofeng [1 ]
Yang, Xiaoyun [1 ]
机构
[1] South China Agr Univ, Key Lab Nat Pesticide & Chem Biol, Minist Educ, Guangzhou 510642, Guangdong, Peoples R China
[2] Hunan Acad Agr Sci, Hunan Rice Res Inst, Changsha, Hunan, Peoples R China
基金
中国国家自然科学基金;
关键词
Pesticide residue; Celery; GC-MS; QuEChERS; DLLME; RESIDUES; VEGETABLES; QUANTIFICATION; COMBINATION; EXTRACTION; QUECHERS; JUICES; FRUIT;
D O I
10.1007/s12161-015-0390-5
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
A rapid and sensitive method was established to simultaneously determine multiple pesticide residues in celery through gas chromatography-mass spectrometry (GC-MS). Samples were extracted through a modified quick, easy, cheap, effective, robust, and safe method (modified QuEChERS) and then refined and preconcentrated through dispersive liquid-liquid microextraction (DLLME) by using CHCl3 as extractive solvent and acetonitrile (ACN) as dispersive solvent. The main factors, including type of extraction solvent, volume of extraction solvent, volume of dispersive solvent, extraction time, salt concentration, vortex velocity, and pH of aqueous solution, influencing DLLME were initially evaluated by performing single-factor variable experiments; three significant factors, particularly volume of extraction solvent, volume of dispersive solvent, and extraction time, were thoroughly analyzed through response surface methodology. The following optimized extraction conditions were obtained: 100 mu L of CHCl3, 900 mu L of ACN, and 1.62-min extraction time. The optimized method was validated with average recoveries ranging from 70.8 to 93.2 % (with relative standard deviations of < 15 %) at three spiked levels for all of the pesticides. Good linearity with determination coefficients of > 0.9974 was obtained on the basis of the matrix-matched calibration curve of each pesticide; limits of detection ranging from 2.4 to 14.2 mu g/kg indicated high sensitivity. Malathion with concentrations varying from 0.009 to 0.012 mg/kg was detected in all of the samples; other pesticides were not detected.
引用
收藏
页码:2133 / 2141
页数:9
相关论文
共 50 条
  • [1] Dispersive Liquid-Liquid Microextraction Combined with Gas Chromatography-Mass Spectrometry for the Determination of Multiple Pesticides in Celery
    Yaru Wang
    Xuexue Miao
    Haifeng Wei
    Deyun Liu
    Gaofeng Xia
    Xiaoyun Yang
    [J]. Food Analytical Methods, 2016, 9 : 2133 - 2141
  • [2] Determination of 27 pesticides in wine by dispersive liquid-liquid microextraction and gas chromatography-mass spectrometry
    Chen, Bo
    Wu, Feng-qi
    Wu, Wei-dong
    Jin, Bao-hui
    Xie, Li-qi
    Feng, Wen
    Ouyang, Gangfeng
    [J]. MICROCHEMICAL JOURNAL, 2016, 126 : 415 - 422
  • [3] Determination of Topiramate and Carbamazepine in Plasma by Combined Dispersive Liquid-Liquid Microextraction and Gas Chromatography-Mass Spectrometry
    Cabarcos-Fernandez, Pamela
    Tabernero-Duque, Maria Jesus
    Alvarez-Freire, Ivan
    Bermejo-Barrera, Ana Maria
    [J]. SEPARATIONS, 2024, 11 (02)
  • [4] In situ ionic liquid dispersive liquid-liquid microextraction coupled to gas chromatography-mass spectrometry for the determination of organophosphorus pesticides
    Cacho, J., I
    Campillo, N.
    Vinas, P.
    Hernandez-Cordoba, M.
    [J]. JOURNAL OF CHROMATOGRAPHY A, 2018, 1559 : 95 - 101
  • [5] Determination of organochlorine pesticides in water samples by dispersive liquid-liquid microextraction coupled to gas chromatography-mass spectrometry
    Cortada, Carol
    Vidal, Lorena
    Pastor, Raul
    Santiago, Noemi
    Canals, Antonio
    [J]. ANALYTICA CHIMICA ACTA, 2009, 649 (02) : 218 - 221
  • [6] Application of dispersive liquid-liquid microextraction for the determination of selected organochlorine pesticides in honey by gas chromatography-mass spectrometry
    Kujawski, Maciej W.
    Pinteaux, Emilie
    Namiesnik, Jacek
    [J]. EUROPEAN FOOD RESEARCH AND TECHNOLOGY, 2012, 234 (02) : 223 - 230
  • [7] Dual dispersive liquid-liquid microextraction for determination of phenylpropenes in oils by gas chromatography-mass spectrometry
    Tsai, Chia-Ju
    Li, Jih-Heng
    Feng, Chia-Hsien
    [J]. JOURNAL OF CHROMATOGRAPHY A, 2015, 1410 : 60 - 67
  • [8] Speciation of butyltins by dispersive liquid-liquid microextraction and gas chromatography-mass spectrometry
    Smitiene, Vaida
    Baskirova, Inga
    Vickackaite, Vida
    [J]. CHEMIJA, 2013, 24 (03): : 210 - 216
  • [9] Automated Dispersive Liquid-Liquid Microextraction-Gas Chromatography-Mass Spectrometry
    Guo, Liang
    Lee, Hian Kee
    [J]. ANALYTICAL CHEMISTRY, 2014, 86 (08) : 3743 - 3749
  • [10] Two dispersive liquid-liquid microextraction methods coupled with gas chromatography-mass spectrometry for the determination of organophosphorus pesticides in field water
    Chu, Shang-Ping
    Huang, Chun-Kai
    Chen, Pai-Shan
    Huang, Shang-Da
    [J]. ENVIRONMENTAL CHEMISTRY, 2014, 11 (06) : 661 - 672