Shi Ta-qing, Liang Pei, Li Jing, Lu Han-bing
Jinggangshan Normol College, Jian 343009, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2005 Mar;25(3):444-6.
The adsorption behavior of Cd, Co and Zn on nanometer-size TiQ2 was investigated. At pH 9.0, Cd, Co and Zn were retained on the nanometer-size TiO2, then eluted with 0.1 mol x 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 x g(-1) for Cd, Co and Zn respectively. The detection limits (3sigma) for Cd, Co and Zn are 5.1, 3.4 and 2.9 ng x mL(-1) respectively. The proposed method has been applied to the determination of trace Cd, Co and Zn in environmental samples with satisfactory results.
研究了镉、钴和锌在纳米二氧化钛上的吸附行为。在pH 9.0时，镉、钴和锌被保留在纳米二氧化钛上，然后用0.1 mol·L⁻¹硝酸洗脱并用ICP - AES测定。发现纳米二氧化钛对镉、钴和锌的吸附容量分别为8.1、6.9和15.1 mg·g⁻¹。镉、钴和锌的检测限（3σ）分别为5.1、3.4和2.9 ng·mL⁻¹。该方法已应用于环境样品中痕量镉、钴和锌的测定，结果令人满意。
