| The contents of the fifteen elements, which include Na, Sn, Ca, Zn, Cu, Mg, Al, 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. |