- 作者: H. Zavvar Mousavi* and N. Pourreza
- 作者服務機構: Chemistry Department, College of Sciences, Semnan University,Semnan, Iran
- 中文摘要:
A highly selective and sensitive catalytic method for the determination of trace amounts of titanium(
IV) was developed. The method is based on the catalytic effect of titanium(IV) on the methylene
blue-ascorbic acid redox reaction. The reaction was followed spectrophotometrically by measuring the
change in absorbance of methylene blue at 665 nm, 5 minutes after the initiation of the reaction. In this
study experimental parameters were optimized and the effect of the presence of various cations and some
anions on the determination of titanium(IV) was examined. The calibration graph was linear in the range
of 3-25 ng mL–1 of titanium(IV). The relative standard deviation for the determination of 10 and 20 ng
mL–1 of titanium(IV) were 2.64% and 1.51%, respectively (n = 8). The detection limit calculated from
three times of standard deviation of blank 3Sb was 0.6 ng mL–1. The method was successfully applied to
the determination of titanium(IV) in tap water and ore samples. - 英文摘要: --
- 中文關鍵字: Titanium(IV); Catalytic effect; Spectrophotometry; Methylene blue.
- 英文關鍵字: --