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Study of Chromogenic Reaction of p-Acetylchlorophosphonazo with Lead(II)
Corresponding Author(s) : Qing-Zhou Zhai
Asian Journal of Chemistry,
Vol. 25 No. 1 (2013): Vol 25 Issue 1
Abstract
In this work, p-acetylchlorophosphonazo (CPApA) and lead(II) form a blue complex in a pH 3.5 CH3COOH-CH3COONa buffer solution. A new method has been established for the determination of lead by spectrophotometry. The maximum absorption peak of Pb(II)-CPApA complex locates at 606 nm. The absorbance is linearly related over the range of 0.1-4.0 μg mL-1 at the wavelength. The apparent molar absorptivity of method is e606 nm = 2.56 × 104 L mol-1 cm-1. The method has been used to determine lead in potato. The relative standard deviation was 1.05-2.05 % for thirteen replicate determinations. The recovery of the standard addition was 99.1-105.0 %.
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- N. Jin and W.Z. Yin, Non-ferrous MiningMetal, 22, 114 (2006).
- J.H. He, Q. Xu and Z.R. Song, Metal. Anal., 30, 34 (2010).
- Z.Y. Guo, J. Peng and Y.Q. Fan, Chem. Anal. Meterage, 19, 79 (2010).
- J. Chen, B.L. Lu, J. Zheng and L. Lin, Phys. Test. Chem. Anal., Part B: Chem. Anal., 45, 1401 (2009).
- W.Q. Li, S.Y. Shan and H. Zhu, Phys. Test. Chem. Anal., Part B: Chem. Anal., 45, 1417, 1421 (2009).
- Y. Shan, X.Y. Yang, S.F. He, M. Xiong and C.X. Liu, Chin. J. Spectrosc. Lab., 26, 1531 (2009).
- Z.Y. Li, Food Sci., 23, 93 (2002).
- T.P. Hao, H.L. Li, Z.X. Qi, C.M. Sun and C.M. Ma, Metal. Anal., 12, 48 (1992).
- M.S. Yang, S. Wang and G.L. Chen, Rock Miner. Anal., 14, 292 (1995).
- J.M. Pan, Z.J. Li, Q.Y. Zhang and G.Z. Fang, New Chromogenic Reagents and Their Application in Spectrophotometry. Beijing: Chemical Industry Publishing House, pp. 34-35 (2003).
References
N. Jin and W.Z. Yin, Non-ferrous MiningMetal, 22, 114 (2006).
J.H. He, Q. Xu and Z.R. Song, Metal. Anal., 30, 34 (2010).
Z.Y. Guo, J. Peng and Y.Q. Fan, Chem. Anal. Meterage, 19, 79 (2010).
J. Chen, B.L. Lu, J. Zheng and L. Lin, Phys. Test. Chem. Anal., Part B: Chem. Anal., 45, 1401 (2009).
W.Q. Li, S.Y. Shan and H. Zhu, Phys. Test. Chem. Anal., Part B: Chem. Anal., 45, 1417, 1421 (2009).
Y. Shan, X.Y. Yang, S.F. He, M. Xiong and C.X. Liu, Chin. J. Spectrosc. Lab., 26, 1531 (2009).
Z.Y. Li, Food Sci., 23, 93 (2002).
T.P. Hao, H.L. Li, Z.X. Qi, C.M. Sun and C.M. Ma, Metal. Anal., 12, 48 (1992).
M.S. Yang, S. Wang and G.L. Chen, Rock Miner. Anal., 14, 292 (1995).
J.M. Pan, Z.J. Li, Q.Y. Zhang and G.Z. Fang, New Chromogenic Reagents and Their Application in Spectrophotometry. Beijing: Chemical Industry Publishing House, pp. 34-35 (2003).