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Colour Reaction of Dibromo-p-chloro-chlorophosphonazo with Magnesium(II) and Analytical Application
Corresponding Author(s) : Qing-Zhou Zhai
Asian Journal of Chemistry,
Vol. 25 No. 7 (2013): Vol 25 Issue 7
Abstract
Using a complex colour reaction of DBC-chlorophosphonazo with magnesium(II), a spectrophotometric method for the determination of magnesium(II) has been developed. The apparent molar absorptivity of method is e620 nm = 2.03 × 104 L·mol-1·cm-1. Beer's law is followed over the range of 0-1.2 μg/mL for magnesium(II). Its regression equation is: A = 0.1604C (C:μg/mL) + 0.0079, with a correlation coefficient of r = 0.9993. The method has been satisfactorily applied to the determination of magnesium(II) in tobacco samples.
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- Q. Huang, H. Liang and F.P. Du, Stud. Trace Elements Health, 22, 61 (2005).
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- J.H. Wang, F. Ma, W.X. Su and Y.P. Liang, Shandong Metallurgy, 29, 50 (2007).
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References
Q. Huang, H. Liang and F.P. Du, Stud. Trace Elements Health, 22, 61 (2005).
Y.T. Gao and A.P. Yin, Guangdong Trace Elements Sci., 10, 20 (2003).
F. Lian, Sichuan Nonferrous Metals, 2, 33 (2010).
J.Y. Yin, Z.Y. Liu and Z.J. Gao, Guangdong Trace Elements Sci., 16, 30 (2009).
S.B. Qiao, C.M. Jiao and Q.D. Wang, PTCA (Part B: Chem. Anal.), 45, 719 (2009).
X.B. Ma, L.P. Zhang and T. Liu, Fujian Anal. Test., 17, 15 (2008).
D.L. Li, Q.B. Huang, M. Li, H.T. Li, J.Y. Yin and Q.F. Hu, Arid Environ. Monit., 18, 5 (2004).
H.J. Liu, J. Jinzhou Normal Coll. (Nat. Sci. Ed.), 21, 48 (2000).
J.H. Wang, F. Ma, W.X. Su and Y.P. Liang, Shandong Metallurgy, 29, 50 (2007).
J.M. Pan, Z.J. Li, Q.Y. Zhang and G.Z. Fang, New Chromogenic Reagents and Their Application in Spectrophotometry, Beijing:Chemical Industry Press, p. 35 (2003).
Q.Z. Zhai and X.X. Zhang, PTCA (Part B: Chem. Anal.), 43, 114 (2007).