2007•Food Science and Technology InternationalRequires access
Determination of nitrate and nitrite in foods by flow injection analysis
Xiao Jing-ze
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Abstract
Using flow injection analysis method detection nitrate and nitrite in foods. The liner range of nitrate was 20.0～2000.0μg/L (r≥0.999). The detection limit of nitrate was 1.1μg/L. The relative standard deviation was 0.97% and the sample throughput of nitrate was 22samples/h. The recovery of nitrate was 94%～106%. The liner range of nitrite was 2.0～200.0μg/L(r≥0.999). The detection limit of nitrate was 0.4μg/L. The relative standard deviation was 0.35% and the sample throughput of nitrate was 27samples/h. The recovery of nitrate was 91%～109%. The method is simple, rapid and has been used to the determination of nitrate and nitrite in food samples with satisfactory results.