Abstract
A simple, rapid, low cost and accurate determination using flow injection spectrophotometry with a home made flow cell detector, in combination with green LED and photodiode, had been developed for nitrite based on the Griess-Saltzman reaction, measuring the absorbance at 525 nm. The proposed system is able to monitor nitrite in freshwater samples at a throughput of 60 samples per hour with a relative standard deviation (%RSD) of less than 2.4% and a detection limit of < 7 µg dm-3. The calibration graph was linear between 0.010 - 1.0 mg dm-3.
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Hirata, S., Amma, B.V., Karthikeyan, S. et al. Determination of Nitrite by Flow Injection Spectrophotometry Using a Home-made Flow Cell Detector. ANAL. SCI. 19, 1687–1689 (2003). https://doi.org/10.2116/analsci.19.1687
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DOI: https://doi.org/10.2116/analsci.19.1687