Su J.,Fujian CCIC Fairreach Food Safety Testing Co. |
Chen J.,Fujian CCIC Fairreach Food Safety Testing Co. |
Chen H.,Fujian CCIC Fairreach Food Safety Testing Co. |
Zhao J.,Fuqing Entry exit Inspection and Quarantine Bureau |
And 2 more authors.
Journal of Chinese Institute of Food Science and Technology | Year: 2014
A method for the determination of chlordecone residue in aquatic products was developed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). For the method, the residue was extracted from homogenized tissue with acetonitrile-water assisted by n-hexane, separated with liquid -liquid partition. The supernatant was purified using solid phase extraction (Florisil column) prior to the GC and GC-MS analysis. Determinations were performed by using electron capture detector (ECD) in GC method and selected ion monitoring (SIM) mode in GC-MS method, then external standard method was used in the quantification. The method was convenient and rapid after investigating the conditions of pretreatment and determination. Under the optimal conditions, the detection limit of the method (RSN≥10) was 0.01 mg/kg. Tests for recovery were carried by addition of standard at concentration of 0.01 mg/kg, 0.04 mg/kg and 0.10 mg/kg, the results were 73%-110%, and the relative standard deviations were in the range of 3.5%-10.4%. The method owns the advantages of easy, fast, and more sensitive, which can meet the requirement of the determination of chlordecone residue in aquatic products.