Rapid colorimetric determination of nitrate in plant tissue by nitration of salicylic acid

1975/01/01 by D. A. Cataldo, D.A. Cataldo, M. Maroon +2 · 5 citations
Agricultural and Biological Sciences · #Potato Plant Research

paper · doi:10.1080/00103627509366547

crossref issued 1975/01/01 · crossref published 1975/01/01 · crossref published-print 1975/01/01 · openalex publication_date 1975/01/01 · crossref published-online 2008/11/11 · crossref created 2008/11/12 · crossref deposited 2017/10/17 · openalex created_date 2025/10/10 · crossref indexed 2026/07/31 · openalex updated_date 2026/08/01

Abstract

An analysis is described for the rapid determination of nitrate‐N in plant extracts. The complex formed by nitration of salicylic acid under highly acidic conditions absorbs maximally at 410 nm in basic (pH>12) solutions. Absorbance of the chromophore is directly proportional to the amount of nitrate‐N present. Ammonium, nitrite, and chloride ions do not interfere.

Citations

• The determination of nitrate in soil solutions by ultraviolet spectrophotometry

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