수산물의 중금속 함량에 대한 연구

Abstract

The present study was carried out to analyze lead(Pb), cadmium(Cd), iron(Fe), calcium(Ca), copper(Cu), zinc(Zn), nickel(Ni), manganese(Mn) and mercury(Hg) on import fishery. Pb, Cd, Fe, Ca, Cu, Zn, Ni, and Mn analysis in samples were performed using microwave device and Inductively coupled plasma spectrometer(ICP). Mercury analysis in samples were performed using method combustion gold amalgamation. The contents of Pb, Cd, Fe, Ca, Cu, Zn, Ni, Mn and Hg in samples (n=297) was determined. The contents of heavy metals were Pb 0.025 mg/kg, Cd 0.051 mg/kg, Hg 0.088 mg/kg respectively. And minerals contents of fishery were Fe 4.143 mg/kg, Ca 310.091 mg/kg, Cu 0.916 mg/kg, Zn 10.200 mg/kg, Ni 0.671 mg/kg, Mn 0.305 mg/kg. The LOD for heavy metals were Pb 7.5 μg/kg, Cd 2.1 μg/kg, Fe 6.6 μg/kg, Ca 10.8 μg/kg, and Cu 5.1 μg/kg, Zn 7.5 μg/kg, Ni 8.4 μg/kg, Mn 3.3 μg/kg and Hg 0.01 μg/kg, while the LOQ were Pb 25 μg/kg, Cd 7 μg/kg, Fe 22 μg/kg, Ca 36 μg/kg, and Cu 17 μg/kg, Zn 24 μg/kg, Ni 28 μg/kg, Mn 11 μg/kg and Hg 0.035 μg/kg. The recovery results were in the range 84～99%. Correlation analysis between heavy metals content of fishery were Hg↔ Cu (p<0.05), Pb ↔Fe(p<0.01), Pb↔Ni (p<0.01), Pb↔Mn(p<0.01), Cd↔Ca, Cu, Zn (p<0.01), Fe↔Zn, Ni, Mn (p<0.01), Cu↔Zn, Ni, Mn (p<0.01).