Determination of N-Heptyl Pyridine Tetrafluoroborate in Acetonitrile Using UV–Spectrum

Abstract:

Ionic Liquids is called also room temperature molten salt, its performance is mainly dependent on composition of cation and anion, and through molecular design the adjustment. And the traditional organic solvent, water, supercritical fluid and chemical reaction than solvent, ionic liquid in the following several aspects to show its prominent advantages. N-heptyl-pyridine tetrafluoroborate is prepared by the double decomposition reaction of HEPB and NaBF4. The ionic liquid at room temperature used in the experiment has a significant absorption determined by UV spectrum within the range of 200-400nm, the maximum absorption wavelength of HEP-BF4 ionic liquid in acetonitrile is 240nm. The standard working curve of HEP-BF4 ionic liquid is y=0.04518+0.03124X (R=0.99963). The linear range of HEP-BF4 ionic liquids in the acetonitrile is 1-75 mg/L. The recovery rate of HEP-BF4 ionic liquid which is between 95.9% and 102%, is measured by standard addition method in acetonitrile.

• Periodical: Applied Mechanics and Materials (Volume 707)
• Pages: 12-15
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.707.12
• Online since: December 2014
• Authors: Tao Huang*, Peng Tian
• Keywords: Acetonitrile, HEP-BF₄, UV-Spectrum

References

[1] Y.A. Gao S.B. Han B.X. Han G.Z. Li,D. Shen Z.H. Li,J.M. Du,W.G. Hou, Langmuir 2005, 21, 5681.

[2] S. Oh, J. Kizling, K. Holmberg, A . Colloid Surf 1995, 97, 169.

[3] M. Spiro, de Jesus, D. M. Langmuir 2000, 16, 2464.

[4] M. Bonini,U. Bardi,D. Berti, C Neto,.; Baglioni, P. J. Phys. Chem. B 2002, 106, 6178.

[5] F F Lv, L Q Zheng, C H Tung. Phase behavior of the microemulsions and the stability of the chloramphenicol in the microemulsion-based ocular drug delivery system[J]. International journal of pharmaceutics, 2005, 301(1): 237-246.

DOI: 10.1016/j.ijpharm.2005.06.006

[6] A . Martino, E . Kaler, J .W. Phys. Chem. 1990, 94, 1627.

[7] S . Peng, X . An, W. J. Shen, Colloid Interface Sci. 2005, 287, 141.

[8] R.D. Falcone, N M Correa, M A Biasutti, et al. Properties of AOT aqueous and nonaqueous microemulsions sensed by optical molecular probes[J]. Langmuir, 2000, 16(7): 3070-3076.

DOI: 10.1021/la9909446

[9] S. Ray S.P. Moulik. Dynamics and thermodynamics of aerosol OT-aided nonaqueous microemulsions[J]. Langmuir, 1994, 10(8): 2511-2515.

DOI: 10.1021/la00020a005

[10] C A T Laia, P López-Cornejo, S M B Costa, et al. Dynamic light scattering study of AOT microemulsions with nonaqueous polar additives in an oil continuous phase[J]. Langmuir, 1998, 14(13): 3531-3537.

DOI: 10.1021/la9709047

[11] K.V. Schubert K.M. Lusvardi E.W. Kaler. Polymerization in nonaqueous microemulsions[J]. Colloid and Polymer Science, 1996, 274(9): 875-883.

DOI: 10.1007/bf00654746

[12] T. Welton, Chem. ReV. 1999, 99, (2071).