Nanometer-size titanium dioxide separation/preconcentration and ICP-AES for the determination of Cd, Co and Zn

作者：Shi TQ^*; Liang P; Li J; Lu HB

来源：Spectroscopy and Spectral Analysis, 2005, 25(3): 444-446.

• nanometer-size TiQ
• preconcentration
• ICP-AES
• Cd
• Co
• Zn

The adsorption behavior of Cd, Co and Zn on nanometer-size TiO2 was investigated. At pH 9.0, Cd, Co and Zn were retained on the nanometer-size TiO2, then eluted with 0.1 mol(.)L(-1) HNO3 and determined by ICP-AES. The adsorption capacities of nanometer TiO2 were found to be 8.1, 6.9 and 15.1 mg(.)g(-1) for Cd, Co and Zn respectively. The detection limits (3 sigma) for Cd, Co and Zn are 5.1, 3.4 and 2.9 ng (.) mL(-1) respectively. The proposed method has been applied to the determination of trace Cd, Co and Zn in environmental samples with satisfactory results.

• 出版日期2005-3
• 单位华中师范大学