Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Caixa Postal 96, 13400-970, Piracicaba, Brazil.
Biol Trace Elem Res. 2011 Dec;144(1-3):1289-94. doi: 10.1007/s12011-011-9127-5. Epub 2011 Jul 7.
This work focuses on the determination of chemical elements in sweet oranges of variety Valencia produced under organic and conventional systems using instrumental neutron activation analysis and inductively coupled plasma mass spectrometry. The distribution of chemical elements was variable among the fruit parts with usually higher concentrations of Br, Ca, Ce, K, La, Na, Rb, and Sc in the peel. However, K, Na, and Rb also presented high values in the juice samples, while Fe and Zn were higher in the seeds. Differences between organic and conventional oranges were found for Br and Cu.
本工作采用仪器中子活化分析和电感耦合等离子体质谱法，研究了在有机和常规系统下生产的脐橙品种 Valencia 中化学元素的测定。化学元素在果实各部分的分布情况不同，果皮中 Br、Ca、Ce、K、La、Na、Rb 和 Sc 的浓度通常较高。然而，K、Na 和 Rb 在果汁样品中也呈现出较高的值，而 Fe 和 Zn 在种子中含量较高。有机和常规橙子之间的差异表现在 Br 和 Cu 上。
