Abstract：
:A one-step extraction-purification multiresidue method for the determination of 14 organochlorine pesticides (OCPs) and 7 polychlorinated biphenyls (PCBs) in edible vegetable oils based on matrix solid-phase dispersion (MSPD) has been developed. The experimental parameters affecting the recoveries and the efficiency of the cleanup procedure were thoroughly evaluated. Under an optimised condition, 0.5 g of oil sample was blended with 3.5 g of sulfuric acid-impregnated silica and 0.8 g of silica gel was used as co-column absorbent. The PCBs and OCPs were eluted by 10 mL of n-hexane/dichloromethane (70:30, v/v) and determined by gas chromatography equipped with an electron capture detector (GC-ECD). Good recoveries were obtained in the range of 69.6-105.3% with relative standard deviations (RSD) values below 15% in most cases. The limits of detection (LOD), based on a signal-to-noise ratio (S/N) of 3, were in the range of 0.04-0.74 ng/g.
journal_name
Food Chemjournal_title
Food chemistryauthors
Li J,Liu D,Wu T,Zhao W,Zhou Z,Wang Pdoi
10.1016/j.foodchem.2013.11.047subject
Has Abstractpub_date
2014-05-15 00:00:00pages
47-52eissn
0308-8146issn
1873-7072pii
S0308-8146(13)01671-3journal_volume
151pub_type
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