电感耦合等离子体发射光谱法(ICP-AES)测定黑豆和红小豆中15种元素

采用ICP—AES法同时测定黑豆和红小豆中Na，Sn，Ca，Zn，Cu，Mg，Al，Fe，P，K，Si，Se，Ba，Mn，M015种元素含量，并对各元素进行了加标回收实验，黑豆和红小豆中各元素的平均回收率在93．11％～102．15％，相对标准偏（RSD）在0．83％0～2．8％，检出限介于0．11～14．09Fg／L。建立了简便、快速、准确和稳定的测定黑豆和红小豆中元素的测定方法。结果显示在黑豆和红小豆中K，Ca，P，Mg，Mn，Fe，Zn等常量元素和微量元素含量较高。红小豆中Ca，Mg，Fe，Zn等营养元素的含量较黑豆中的高。

Comparative Studies on the Fifteen Elements in the Black Beans and Small Red Beans by Inductively Coupled Plasma Atomic Emission Spectrometry(ICP-AES)

The contents of the fifteen elements, which include Na, Sn, Ca, Zn, Cu, Mg, A1, Fe, P, K, Si, Se, Ba, Mn, and Mo, in black beans and small red beans were simultaneously determined by the inductively coupled plasma atomic emission spectrometry （ICP-AES） method. In addition, the spiked recovery experiments were conducted for each element. The average recovery of each element in the black beans and small red beans are in the range of 93.11% to 102. 15%. The RSDs are between 0.83% to 2.8% and the detection limits are in the range from 0. 11 to 14.09 μg/L. A simple, rapid, accurate and stable testing method for the determination of the elements in the black beans and the small red beans has been established. The results showed that the contents of major elements and trace element in the black beans and small red beans, including K, Ca, P, Mg, Mn, Fe, Zn, etc. , are relatively high. The contents of the nutrient elements, such as Ca, Mg, Fe, Zn, etc. , are higher in the small red beans than that in the black beans.