Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, 510515, China.
Public Health Laboratory Centre of Southern Medical University School, North no. 1838, Guangzhou Avenue, Guangzhou, Guangdong Province, China.
Biol Trace Elem Res. 2018 Mar;182(1):152-158. doi: 10.1007/s12011-017-1055-6. Epub 2017 Jun 16.
Fresh Mashui orange samples were pretreated with microwave digestion using an HNO-HO system. The levels of Mg, K, Ca, Fe, Mn, Cu, Zn, As, Cd, and Pb in the seeds, pulp, and peel were then determined using inductively coupled plasma mass spectrometry (ICP-MS) combined with collision cell technology (CCT) and kinetic energy discrimination (KED). The standard curve coefficient of determinations of the ten tested elements were between 0.9995 and 0.9999. The instrument detection limit was between 0.112 ng/L and 3.05 ng/mL. The method detection limit was between 0.0281 and 763 ng/g. The average recovery rate was between 85.0 and 117%. The current results showed that Mashui oranges are rich in three elements, namely Mg, K, and Ca. The concentrations of K and Ca were significantly higher than that of Mg in the peel. The content of K was the highest in the seeds. Fe, Mn, Cu, and Zn had the second highest concentrations, and Fe was the highest in the seeds, while Cu was the lowest in the peel. As, Cd, and Pb (hazardous elements) had the lowest concentrations of all the tested elements.
将新鲜麻水橙样品用 HNO-HO 微波消解体系预处理，采用电感耦合等离子体质谱法（ICP-MS）结合碰撞池技术（CCT）和动能量甄别（KED），对其种子、果肉和果皮中的 Mg、K、Ca、Fe、Mn、Cu、Zn、As、Cd 和 Pb 含量进行了测定。十种被测元素的标准曲线相关系数在 0.9995 到 0.9999 之间。仪器检出限在 0.112ng/L 到 3.05ng/mL 之间。方法检出限在 0.0281 到 763ng/g 之间。平均回收率在 85.0 到 117%之间。结果表明，麻水橙富含 Mg、K 和 Ca 三种元素，K 和 Ca 的浓度明显高于 Mg，K 在果皮中的含量最高，Fe、Mn、Cu 和 Zn 的含量次之，Fe 含量最高，Cu 含量最低，As、Cd 和 Pb（有害元素）含量最低。
