Electrically Polarized Ion-Exchange Beds in Ion Chromatography: Eluent Generation and Recycling

Analytical Chemistry

Volumn 70, Issue 17, 1998, Pages 3629-3635

  Small, Hamish ^a   Liu, Yan ^b   Avdalovic, Nebojsa ^b  

^a HSR   (United States)

^b DIONEX CORPORATION   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0000048699     PISSN: 00032700     EISSN: None     Source Type: Journal    
DOI: 10.1021/ac980268x     Document Type: Article

References (14)

1. Strong, D. L.; Dasgupta, P. K. J. Membr. Sci. 1991, 57, 321-336.
2. Strong, D. L.; Dasgupta, P. K.; Friedman, K.; Stillian, J. R. Anal. Chem. 1991, 63, 480-486.
3. Strong, D. L.; Dasgupta, P. K. Anal. Chem. 1989, 61, 939-945.
4. Rabin, S. A.; Stillian, J. R.; Barreto, V.; Friedman, K.; Toofan, M. J. Chromatogr. 1993, 640, 97-109.
5. Stillian, J. R.; Barreto, V. M.; Friedman, K. A.; Rabin, S. A.; Toofan, M. U.S. Patent 5, 248, 426, issued September 28, 1993.
6. Small, H.; Riviello, J. Anal. Chem. 1998, 70, 2205-2212.
7. Small, H. Some Electrochemical Properties of an Ion Exchanger. M.Sc. Thesis, Queen's University of Belfast, Belfast, 1953.
8. Sauer, M. C.; Southwick, P. F.; Spiegler, K. S.; Wyllie, M. R. J. Ind. Eng. Chem. 1955, 47, 2187-2193.
9. Because resins are conducting current, the best choice of resin is usually the resin with the best conductivity, providing no other factor overrides that choice. Potassium form resin is approximately twice as good a conductor as the sodium form.
10. Small, H. Ion Chromatography; Plenum Press: New York, 1989; p 170.
11. Small, H.; Riviello, J.; Pohl, C. A. U.S. Patent, 5, 597, 734, issued January 28, 1997.
12. A current of 11.9 mA is equivalent to 0.714 C/min, that is, (0.714 × 1000)/96500 (Faraday constant) = 0.0074 mequiv of NaOH generated per minute. At a flow rate of 2 mL/min of water, the generator will therefore deliver NaOH at a concentration of 0.0037 M.
13. Jackson, P. E.; Pohl, C. A. TrAC, Trends Anal. Chem. 1997, 16, 393-401.
14. However, used with capillary separators, generators of these capacities will have much longer lifetimes because the eluent flow rates are much lower. So generators of these dimensions may be very appropriate for capillary systems.