Eluent for ion chromatography for measuring alkaline earth...

Details Eluent for ion chromatography for measuring alkaline earth... Eluent for ion chromatography for measuring alkaline earth...

2007-01-09

2007-01-09

Therkorn, Ernest G. (Department: 1723)

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

C210S656000, C210S198200, C436S161000

Reexamination Certificate

active

10675976

ABSTRACT:
An eluent for ion chromatography for analyzing divalent cations, which comprises an acid and at least one amino acid selected from the group consisting of histidine, lysine and arginine.

REFERENCES:
patent: 3732146 (1973-05-01), Heimburger
patent: 4259447 (1981-03-01), Hafeli
patent: 4381346 (1983-04-01), Huasin
patent: 4673733 (1987-06-01), Chandra
patent: 4978620 (1990-12-01), Morii
patent: A-6-1850 (1994-01-01), None
patent: 6213881 (1994-08-01), None
patent: A-8-257419 (1996-10-01), None
Hajos: Histidine as a dipolar eluent component in cation chromatography,Journal of Chromatography A, 789 (1997) pp. 141-148.
Hajos et al: “Histidine as a dipolar eluent component in cation chromatography II. Prediction of retention data for alkaline and alkaline-earth ions,”Journal of Chromatography A, 920 (2001) pp. 23-30.
Schomburg et al, “Ion chromatography of alkali and alkaline earth metal ions”,Am. Lab. (Fairfield Conn.), vol. 21, No. 5, May 1989, pp. 92-101.

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