Means and method for the determination of ammonium ions

Details Means and method for the determination of ammonium ions Means and method for the determination of ammonium ions

1995-10-13

1997-04-15

Warden, Jill

Chemistry: analytical and immunological testing

Nitrogen containing

Amine and quaternary ammonium

436108, 436111, 436169, 422 55, 422 56, 435 12, G01N 3300, G01N 2177

Patent

active

056209002

ABSTRACT:
The invention relates to an absorptive support and a method for the determination of ammonium ions in aqueous solutions by the Berthelot method using one absorptive support. The absorptive support is impregnated with a phenol derivative.

REFERENCES:
patent: 3769172 (1973-10-01), Bressler et al.
patent: 4194063 (1980-03-01), Frank et al.
patent: 4223089 (1980-09-01), Rothe et al.
patent: 4507388 (1985-03-01), Tabacco et al.
patent: 4608335 (1986-08-01), Fossati
patent: 4710458 (1987-12-01), Maines
patent: 5258314 (1993-11-01), Skerratt
P.L. Searle, "The Berthelot or Indophenol Reaction and Its Use in the Analytical Chemistry of Nitrogen", The Analyst, vol. 109, pp. 549-568, May 1984.
C.J. Patton et al., "Spectrophotometric and Kinetics Investigation of the Berthelot Reaction for the Determination of Ammonia", vol. 49, pp. 464-469, Mar. 1977.

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