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Portable Flow-Injection Analyzer for Nitrite and Nitrate in Natural Water

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Abstract

A portable flow-injection analyzer with solid-state spectrophotometric detection for the determination of nitrite and nitrate is described. It utilizes the Griess-Saltzman reaction. The instrument comprises a two-channel peristaltic pump, two six-port injection valves and a mini cadmium column between them. The sample loops were connected serially. The detection limits of the method were less than 7 μg l−1 for NO2− and 10 μg l−1 for NO3−.

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Authors and Affiliations

  1. Marine Resources and Environment, National Institute of Advanced Industrial Science and Technology (AIST), 2-2-2 Hiro-suehiro, Kure, 737-0197, Japan

    Sathrugnan Karthikeyan & Tasuku Kajiya

  2. Graduate School, Kinki University, 1 Takaya-Uminobe, Higashi-Hiroshima, 739-2116, Japan

    Tasuku Kajiya

Authors
  1. Sathrugnan Karthikeyan
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  2. Tasuku Kajiya
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Correspondence to Sathrugnan Karthikeyan.

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Karthikeyan, S., Kajiya, T. Portable Flow-Injection Analyzer for Nitrite and Nitrate in Natural Water. ANAL. SCI. 20, 567–569 (2004). https://doi.org/10.2116/analsci.20.567

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  • DOI: https://doi.org/10.2116/analsci.20.567

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