APPLICATION OF CLOUD POINT PRECONCENTRATION AND FLAME ATOMIC ABSORPTION SPECTROMETRY FOR THE DETERMINATION OF CADMIUM AND ZINC IONS IN URINE, BLOOD SERUM AND WATER SAMPLES

作者：Shokrollahi Ardeshir^*; Joybar Somayeh; Haghighi Hoda Elias; Niknam Khodabakhsh; Niknam Ebrahim

来源：Quimica Nova, 2013, 36(3): 368-374.

• Zn2+ and Cd2+ ions
• TTDM
• flame atomic absorption

A simple, sensitive and selective cloud point extraction procedure is described for the preconcentration and atomic absorption spectrometric determination of Zn2+ and Cd2+ ions in water and biological samples, after complexation with 3,3',3 '', 3 '''-tetraindolyl (terephthaloyl) dimethane (TTDM) in basic medium, using Triton X-114 as nonionic surfactant. Detection limits of 3.0 and 2.0 mu g L-1 and quantification limits 10.0 and 7.0 mu g L-1 were obtained for Zn2+ and Cd2+ ions, respectively. Relative standard deviation was 2.9 and 3.3, and enrichment factors 23.9 and 25.6, for Zn2+ and Cd2+ ions, respectively. The method enabled determination of low levels of Zn2+ and Cd2+ ions in urine, blood serum and water samples.

• 出版日期2013