Y. Kawamura et al., DETERMINATION OF LEVELS OF NO3-, NO2- AND NH4+ IONS IN LEAVES OF VARIOUS PLANTS BY CAPILLARY ELECTROPHORESIS, Plant and Cell Physiology, 37(6), 1996, pp. 878-880
Levels of NO3-, NO2- and NH4+ ions in leaves of six plant species were
determined by capillary electrophoresis. Levels of NO3- ions differed
by a factor of more than 350 in the six species. NO2- and NH4+ ions w
ere detected in all species examined but at lower and more similar res
pective levels than NO3- ions.