[Simultaneous determination of zinc, cadmium and lead chelated by porphyrin with partial least squares fluorimetry].
The fluorescence spectra of super-highly sensitive chelate systems containing multicomponent metal porphyrins are analysed by partial least squares method, and a computerized analysis for the simultaneous determination of zinc, cadmium and lead is developed. Zinc, cadmium and lead can quantitatively combine with meso-tetrakis-(4-methoxyphenyl)-porphyrin in a strong base medium and in the presence of Tween-80 when they are heated for 30 min in a boiling water-bath. The proposed method has been applied to the simultane ous determination of zinc, cadmium and lead in artificial and environmental water samples, and the recovery ratios are in the range of 93.2-107%.
Ding
Y
Y
Dept. of Appl. Chem., Anhui Agricultural University, 230036 Hefei.
Wu
Q
Q
Cheng
L
L
Wang
X
X