Nitrite is an important intermediate in the biological nitrogen cycle
and is present in soils and surface waters. Nitrite leads to the production
of carcinogenic nitrosamine when it reacts with secondary amines in
the stomach. In addition, nitrite is known to cause methemoglobinemia
(oxygen deficiency) in infants[1]. Nitrite is also an important water
pollutant and excess concentration of nitrite in drinking water is
hazardous to health, especially to pregnant women[2]. Nitrite has
many applications in different industries such as food preservation,
fertilizers, detergent, wood pulp, dye and synthetic fiber and hence
could enter the environment causing serious pollution problems. Nitrite
may also be produced in distribution system through the activities of
microorganisms on ammonia[3]. Determination of nitrite at trace levels
plays an important role since it is being used in food-stuff as a
protecting agent. Therefore simple and sensitive methods are required
in order to provide a way to monitor the legal recommended limits of
this additive in foods
Nitrite is an important intermediate in the biological nitrogen cycleand is present in soils and surface waters. Nitrite leads to the productionof carcinogenic nitrosamine when it reacts with secondary amines inthe stomach. In addition, nitrite is known to cause methemoglobinemia(oxygen deficiency) in infants[1]. Nitrite is also an important waterpollutant and excess concentration of nitrite in drinking water ishazardous to health, especially to pregnant women[2]. Nitrite hasmany applications in different industries such as food preservation,fertilizers, detergent, wood pulp, dye and synthetic fiber and hencecould enter the environment causing serious pollution problems. Nitritemay also be produced in distribution system through the activities ofmicroorganisms on ammonia[3]. Determination of nitrite at trace levelsplays an important role since it is being used in food-stuff as aprotecting agent. Therefore simple and sensitive methods are requiredin order to provide a way to monitor the legal recommended limits ofthis additive in foods
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