[Direct determination of Nb in titanium oxide using slurry sample introduction by axial viewing inductively coupled plasma optical emission spectrometry].
By using dispersant polyacrylate amine (NH4PAA) to disperse TiO2, effects of different dispersants, pH value and the amount of dispersant on TiO2 slurry were investigated. The pH value of the medium and the dispersant amount were optimized, and a stable and homogeneous suspension was prepared. Nb in TiO2 was determined by an axial viewing ICP-OES spectrometer. At the same time, the performance of the axial viewing ICP-OES using solid powder analysis was discussed. Under the optimum experimental conditions, the detection limit of the present method is 3.0 microg x L(-1) and the RSD is 3.1% (n = 3, c = 0.3 mg x L(-1)).
Wang
Zheng
Z
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
Chen
Tian-yu
TY
Tao
Guang-yi
GY
Yang
Peng-yuan
PY
D000180:Acrylic Resins / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D009556:Niobium / Q000032:analysis*; D011208:Powders; D000644:Quaternary Ammonium Compounds / Q000737:chemistry; D013053:Spectrophotometry / Q000379:methods*; D014025:Titanium / Q000737:chemistry*
D000180:Acrylic Resins; D011208:Powders; D000644:Quaternary Ammonium Compounds; D009556:Niobium; C009495:titanium dioxide; C006903:carbopol 940; D014025:Titanium