Determination of Trace Amounts of Zirconium by Flotation – Spectrophotometric Method
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A sensitive and reproducible method for the flotation-spectrophotometric determination of zirconium is reported. The method is based on the complex formation zirconium and xylenol orange (XO) which is floated in the interface of aqueous phase and n-hexane by vigorous shaking. By discarding the aqueous solution and n-hexane, the adsorbed complex on to the wall of a separating funnel was dissolved in a small volume of methanol solvent and its absorbance was measured at 429 nm. The effect of different parameters such as pH, concentrations of HCl, and XO, and volume of n-hexane flotation dissolvent, standing and shaking time were studied. The calibration curve was linear in the range of 7-120 ng mL-1 of zirconium with a correlation coefficient of 0.9991. The limit of detection (LOD) was 5.8 ng mL-1. The relative standard deviation (RSD) for seven replicate measurements of 50 and 110 ng mL-1 of zirconium were 4.4 and 3.0%, respectively. The method was successfully applied to the determination of zirconium in water samples.
Abstract
A sensitive and reproducible method for the flotation-spectrophotometric determination of zirconium is reported. The method is based on the complex formation zirconium and xylenol orange (XO) which is floated in the interface of aqueous phase and n-hexane by vigorous shaking. By discarding the aqueous solution and n-hexane, the adsorbed complex on to the wall of a separating funnel was dissolved in a small volume of methanol solvent and its absorbance was measured at 429 nm. The effect of different parameters such as pH, concentrations of HCl, and XO, and volume of n-hexane flotation dissolvent, standing and shaking time were studied. The calibration curve was linear in the range of 7-120 ng mL-1 of zirconium with a correlation coefficient of 0.9991. The limit of detection (LOD) was 5.8 ng mL-1. The relative standard deviation (RSD) for seven replicate measurements of 50 and 110 ng mL-1 of zirconium were 4.4 and 3.0%, respectively. The method was successfully applied to the determination of zirconium in water samples.
참고문헌 (16)
- Cabellero, M., , Talanta, 37, pp.275~ (1990)
- Rao, T. P., , Talanta, 46, pp.765~ (1998)
- Hosseini, M. S., , Anal. Sci., 19, pp.1505~ (2003)
- Argawal, Y. K., , Sep. Purif. Technol., 27, pp.111~ (2002)
- Agrawal, Y. K., , Talanta, 46, pp.1041~ (1998)
- Xu, B., , Yegin Fenxi, 13, pp.37~ (1990)
- Zai, Q. Z, , Analyst, 119, pp.1895~ (1994)
- Li, J., , Fenxi Huxue, 8, pp.418~ (1985)
- Oguma, K., , Talanta, 16, pp.409~ (1969)
- Alimarin, I. P., , Talanta, 34, pp.103~ (1987)
- Wang, Z. P., , Talanta, 51, pp.315~ (2000)
- Oszwaldowski, S., , Talanta, 60, pp.643~ (2003)
- 윤주임, "2-Mercaptobenzothiazole이 내포된 p-Dichlorobenzene 미세결정으로 예비농축시킨 후 Cd(II) 정량", 대한화학회지, 53(1), pp.27~33 (2009), 대한화학회
- Shariati, S., , J. Colloid. Interf. Sci., 298, pp.419~ (2006)
- Miller, J. C., "S. Statistics for Analytical Chemistry" (1984), Ellis Horwood
- Yang, X. J., , Anal. Chim. Acta, 458, pp.375~ (2002)