Determination of Trace Elements in Nuts by Inductively Coupled Plasma Mass Spectrometry

Abstract

Abstract:

This paper describes a simple method for the determination of Li, Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se,
Rb, Sr, Mo, Ag, Cd, Sn, Sb, Ba, Hg, Tl and Pb in nuts using inductively coupled plasma-mass spectrometry (ICP-MS). An
octopole reaction system (ORS) and a shield torch system (STS) were used to eliminate the interferences from polyatomic
ions. The sensitivity of element analysis for those which are difficult to ionize was improved by the addition of 5% methanol.
Optimum instrumental working parameters were established. The accuracy and precision of the proposed method were
validated by the use of rice reference material (GBW 10045). The limits of detection for 24 elements were in the range of
0.002–0.290 μg/L. This method was sensitive, precise and applicable for quality evaluation and safety assessment of nuts.

Key words: inductively coupled plasma mass spectrometry (ICP-MS), nuts, octopole reaction system (ORS), trace elements, methanol

CLC Number:

10.7506/spkx1002-6630-201310050

,NIE Xi-du，FU Liang. Determination of Trace Elements in Nuts by Inductively Coupled Plasma Mass Spectrometry[J]. FOOD SCIENCE, 2013, 34(10): 227-230.

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