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[Simultaneous analysis of multi-elements in vegetation oils by inductively coupled plasma atomic emission
Lan Guo1, Ming-Yong Xie, Ai-Ping Yan
1Key Laboratory of Food Science of Ministry of Education, Nanchang University, Nanchang 330047, China.
Abstract:
A simple, accurate and sensitive method for the simultaneous analysis of eleven trace elements (Fe, Cu, Co, Ni, Pb, Al, Zn, Cd, Cr, Mn and Mg) in vegetation oils by ICP-AES has been developed. The oils were digested by H2 SO4 ashing method. The detection limits (MDLs) of the method for the eleven elements were in the range of 0.1-3.6 microg x kg(-1). The average recoveries at three concentrations of 0.1, 0.5 mg x kg(-1) were between 70.4% and 113% with the RSD in the range of 1.01%-10.6%. The proposed method has been applied to the determination of the above elements in soy, peanut, sesame, rape, tea and blended oils with satisfactory results.
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