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Determination of Cypermethrin Residues in Crucian Carp Tissues by MSPD/GC-ECD
- Zhao, Dongdong, Liu, Xiaoyu, Shi, Wangrong, Liu, Rongfei
- Chromatographia 2011 v.73 no.9-10 pp. 1021-1025
- adsorbents, carp, cypermethrin, detection limit, gas chromatography, liver, muscles, solid phase extraction, solvents, tissues
- A sensitive matrix solid-phase dispersion (MSPD)/gas chromatography-electron capture detector (GC-ECD) method was developed to determine cypermethrin residues in three tissues (muscle, liver, and gill) of crucian carp. Cypermethrin was simultaneously extracted by MSPD and determined by GC-ECD. The main parameters affecting extraction yield and selectivity, such as the type of solid adsorbent material, choice of elution solvents and their volume, were investigated to obtain interference-free extracts and quantitative cypermethrin recovery. Fortified recoveries in muscle, liver, and gill samples ranged from 84.9% to 106.1%, and relative standard deviations were <8% with fortification levels of 0.05-1 mg kg⁻¹. Detection limits were 1.4-2.1 μg kg⁻¹, and quantitation limits were 5.8-7.8 μg kg⁻¹. The proposed method was successfully applied to determination of cypermethrin in fish tissue samples.