[Nanometer-size titanium dioxide separation/preconcentration and ICP-AES for the determination of Cd, Co and Zn].
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.
Shi
Ta-qing
TQ
Jinggangshan Normol College, Jian 343009, China.
Liang
Pei
P
Li
Jing
J
Lu
Han-bing
HB
D000327:Adsorption; D002104:Cadmium / Q000032:analysis / Q000737:chemistry; D003035:Cobalt / Q000032:analysis / Q000737:chemistry; D004785:Environmental Pollutants / Q000032:analysis / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D053768:Metal Nanoparticles / Q000737:chemistry*; D019216:Metals, Heavy / Q000032:analysis* / Q000737:chemistry; D017942:Nitric Acid / Q000737:chemistry; D015203:Reproducibility of Results; D013054:Spectrophotometry, Atomic; D014025:Titanium / Q000737:chemistry*; D015032:Zinc / Q000032:analysis / Q000737:chemistry
D004785:Environmental Pollutants; D019216:Metals, Heavy; D002104:Cadmium; C009495:titanium dioxide; D003035:Cobalt; D017942:Nitric Acid; D014025:Titanium; D015032:Zinc