Procedure and agent for the determination of nitrate ions

Details Procedure and agent for the determination of nitrate ions Procedure and agent for the determination of nitrate ions

1991-03-07

1993-08-17

Housel, James C.

Chemistry: analytical and immunological testing

Nitrogen containing

Nitrite or nitrate

436166, 436 18, G01N 2178

Patent

active

052368483

ABSTRACT:
The invention relates to a procedure and agent for the colorimetric determination of nitrate ions in aqueous solutions by mixing the sample which is to be investigated with resorcinol and a mixture of sulfuric acid and phosphoric acid, characterized in that at least 2 g/l, preferably about 10 to 30 g/l chloride ions are also added.

REFERENCES:
patent: 4003706 (1977-01-01), Szekely
Velghe et al., "Rapid Spectrophotometric Determination of Nitrate in Mineral Waters with Resorcinol," Analyst, vol. 110, pp. 313-314 (Mar. 1985).
Heil, "Entwicklung einer neuen Methode zuf schnellen Bestimmung von Nitrat in Oberflachenwasser, Grundwasser und Trinkwasser," Gewasserschutz, Wasser, Abwasser (GWA), vol. 79, pp. 74-87 (1985).

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