Abstract:

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.

Key words: peach, inductively coupled plasma-atomic emission spectrometry, microwave digestion