In a borax buffer solution of pH 10, cadmium ion ( I ) reacts with SAF in the presence of DDMBA to form a stable purple complex. The absorption maxima lies at 570nm. Beer's Law holds in the concentration range of 0~6μg/25ml, and the apparent molar absorptivity calculated is ε_(570) = 9. 26×10~4 L ·mol~(-1) ·cm~(-1). The proposed method has been applied to the determination of c...
