Determination of ten pyrethroids in various fruit juices: comparison of dispersive liquid-liquid microextraction sample preparation and QuEChERS method combined with dispersive liquid-liquid microextraction.
Dispersive liquid-liquid microextraction (DLLME) sample preparation and the quick, easy, cheap, effective, rugged and safe (QuEChERS) method combined with DLLME were developed and compared for the analysis of ten pyrethroids in various fruit juices using gas chromatography-electron capture detection (GC-ECD). QuEChERS-DLLME method has found its widespread applications to all the fruit juices including those samples with more complex matrices (orange, lemon, kiwi and mango) while DLLME was confined to the fruit juices with simpler matrices (apple, pear, grape and peach). The two methods provided acceptable recoveries and repeatability. In addition, the applicabilities of two methods were demonstrated with the real samples and further confirmed by gas chromatography-mass spectrometry (GC-MS).
Citrus Research Institute, Southwest University, Chongqing 400712, China.
Yaohai
Y
Zhang
Citrus Research Institute, Southwest University, Chongqing 400712, China; College of Food Science, Southwest University, Chongqing 400716, China.
Xuelian
X
Zhang
Citrus Research Institute, Southwest University, Chongqing 400712, China; College of Food Science, Southwest University, Chongqing 400716, China. Electronic address: bljiao@tom.com.
Bining
B
Jiao
D001628:Beverages / Q000032:analysis*; D005591:Chemical Fractionation / Q000379:methods*; D002957:Citrus / Q000737:chemistry; D032084:Citrus sinensis / Q000737:chemistry; D005506:Food Contamination / Q000032:analysis*; D005638:Fruit / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D007306:Insecticides / Q000737:chemistry / Q000302:isolation & purification; D059627:Liquid Phase Microextraction / Q000379:methods*; D027845:Malus / Q000737:chemistry; D010573:Pesticide Residues / Q000737:chemistry* / Q000302:isolation & purification*; D027861:Prunus / Q000737:chemistry; D011722:Pyrethrins / Q000737:chemistry* / Q000302:isolation & purification*
D007306:Insecticides; D010573:Pesticide Residues; D011722:Pyrethrins
Dispersive liquid–liquid microextraction (DLLME); Fruit juices; Gas chromatography–electron capture detection (GC–ECD); Gas chromatography–mass spectrometry (GC–MS); Pyrethroids; QuEChERS