关键词: 微波消解, 电感耦合等离子体发射光谱法, 14种元素, 分布特征, 栾果, 黄山栾果

Abstract: The aim of this study was to investigate the contents and distribution characteristics of the fourteen elements in fructus of Koelreuteria paniculata and K. integrifoliola for their development and utilization. The contents of the fourteen elements were determined by ICP-AES after program microwave digestion. The results showed that the fructus of K. paniculata and K. integrifoliola had moderately high contents of P, Ca and Mg, while the distribution characteristics of these elements differed greatly in different tissues. The contents of P and Mg in pulp were more than doubled than those in pericarp while the contents of Al, Ca, Na, Ti and Zn in pericarp were much higher than those in pulp. However, the content of Fe was less than that in pulp. In addition, the contents of Cr, Mn and K were uniformly distributed in pericarp, pulp and the whole fructus. The contents of the limited elements Cr and Se were much lower than the regulated national standards. Generally speaking, the ICP-AES method was fast, sensitive and simple, and satisfactory analytical results were obtained by using it to simultaneously determine the fourteen microelements in fructus of K. paniculata and K. integrifoliola.

Key words: microwave digestion, inductively coupled plasma atomic emission spectrometer, fourteen elements, distribution characteristics, Koelrenteria paniculata, K. integrifoliola; fructus