[Comparison of various technics for determining nitrates in soil and vegetables].
In order to compare results obtained from various analytical techniques, nitrate determinations in soils and vegetables were made by four usual methods. These are a selective electrode, an autoanalyser with dialyser that determines nitrites following a nitrate reduction step by hydrazine sulfate, another autoanalyser that reduces nitrates with cadmium metal, and the usual DEVARDA method. Interferences and limitations of these techniques are discussed.
D001322:Autoanalysis; D009566:Nitrates / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D014675:Vegetables / Q000032:analysis*
D009566:Nitrates; D012987:Soil
Comparaison de différentes techniques de dosage des nitrates dans les sols et dans les végétaux.