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Determination of Trace Chromium(VI) with 3-Methoxy-Azomethine H in Surface-Active Agents
Corresponding Author(s) : Wen-Bin Chen
Asian Journal of Chemistry,
Vol. 26 No. 1 (2014): Vol 26 Issue 1
Abstract
In the presence of microemulsion cetyltrimethyl ammonium bromide and CH3COOH-CH3COONa buffer at pH 6.2, the condition of colour reaction of chromium(VI) with 3-methoxy-azomethine H was studied and a new spectrophotometric method for the determination of micro chromium(VI) has been established. Results showed that in the presence of CH3COOH-CH3COONa, the maximum absorption wavelength and apparent molar absorptivity are 480 nm and 8.5 × 104 L mol-1 cm-1, respectively. Beer’s law is obeyed in the range of 0.08-15.0 μg for chromium(VI) in 10 mL solution. The detection limit is 0.02 μg/10 mL. The recovery was 102.3-103.8 %. The method has been applied to the determination of trace chromium(VI) in natural water and the result was in accordance with that of the standard spectrometry method.
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- Q.U. Wei, C.-Y. Zhou and L.-L. Cai, Chem. Anal., 852, 48 (2012) (in Chinese).
- J.M. Eckert, R.J. Judd, P.A. Lay and A.D. Symons, Anal. Chim. Acta, 255, 31 (1991); doi:10.1016/0003-2670(91)85083-5.
- Y. Zhang and X.-Y. Chen, Appl. Chem. Ind., 852, 48 (2012) (in Chinese).
- Y.-L. Cao and S.-H. Chen, Physical Testing Chem. Anal., 177, 30 (1994) (in Chinese).
- Y. Zhang, J. Liu and D.-H. Yu, Metallurg. Anal., 57, 19 (1999) (in Chinese)..
- S. Subrahmanyam and M.C. Eshwar, Mikrochim. Acta, 66, 579 (1976); doi: 10.1007/BF01220116.
- G.A. Parker and D.F. Boltz, Anal. Chem., 40, 420 (1968); doi: 10.1021/ac60258a047.
- S. Fu-Sheng, Talanta, 30, 446 (1983);doi:10.1016/0039-9140(83)80105-2.
References
Q.U. Wei, C.-Y. Zhou and L.-L. Cai, Chem. Anal., 852, 48 (2012) (in Chinese).
J.M. Eckert, R.J. Judd, P.A. Lay and A.D. Symons, Anal. Chim. Acta, 255, 31 (1991); doi:10.1016/0003-2670(91)85083-5.
Y. Zhang and X.-Y. Chen, Appl. Chem. Ind., 852, 48 (2012) (in Chinese).
Y.-L. Cao and S.-H. Chen, Physical Testing Chem. Anal., 177, 30 (1994) (in Chinese).
Y. Zhang, J. Liu and D.-H. Yu, Metallurg. Anal., 57, 19 (1999) (in Chinese)..
S. Subrahmanyam and M.C. Eshwar, Mikrochim. Acta, 66, 579 (1976); doi: 10.1007/BF01220116.
G.A. Parker and D.F. Boltz, Anal. Chem., 40, 420 (1968); doi: 10.1021/ac60258a047.
S. Fu-Sheng, Talanta, 30, 446 (1983);doi:10.1016/0039-9140(83)80105-2.