Abstract
An ion flotation-atomic absorption spectrometric method is described for the determination of six heavy metal ions: Fe(III), Ni(II), Co(II), Cu(II), Cd(II) and Zn(II), in water. Heavy metal ions in 1000ml samples were chelated with 1, 10-phenanthroline at pH 4.0 and were floated with the aid of sodium lauryl sulfate and nitrogen bubbles. Each metal ion concentration was determined by a conventional flame atomic absorption spectrometry after diluting to 10ml. The linear calibration curve of each ion was obtained in the concentration range of 4×10-8M-8×10-7M. The proposed method was successfully applied to the determination of these ions in hot spring waters.
