奉化地区水蜜桃果实中金属元素的测定及区域分布特征评价

采用微波消解-电感耦合等离子体原子发射光谱法同时测定奉化水蜜桃（湖景蜜露和玉露）中K、Ca、Mg、Fe、Cu、Mn、Se、Zn含量，研究酸体系、金属元素谱线对测定结果的影响。在最佳实验条件下，各金属元素回收率在82.82%～118.3%之间，相对标准偏差在2.28%～18.4%之间，检出限在0.1～1 μg/L之间，满足样品检测的要求。并对浙江省奉化不同区域的湖景蜜露和玉露金属元素含量进行考察，结果表明，湖景蜜露和玉露均含有K、Ca、Mg、Fe宏量元素和Cu、Mn、Se、Zn等微量元素，且8 种元素在湖景蜜露和玉露中以及不同区域间存在差异。

Determination of Metal Elements Profile and Regional Distribution in Peach Fruit from Fenghua City

In this study, microwave digestion-inductively coupled plasma-atomic emission spectrometry (ICP-AES)
was applied to determine metal elements in peaches (the Hujingmilu and Yulu cultivars). The effects of acid system
and best spectral line on the determination of metal elements were examined to optimize the two conditions. Under the
optimum experimental conditions, the accuracy of the method was validated with recoveries ranging from 82.82%–118.3%
and relative standard deviation (RSD) of 2.28%–18.4%, and limits of detection (LOD) of 0.1–1 μg/L. Peaches from
different areas in Fenghua contained several macro elements including K, Ca, Mg, and Fe, and four trace elements including
Cu, Mn, Se, and Zn as analyzed by the proposed method. There existed differences in the regional distribution of these
elements in peaches.