[Nitrates and nitrites in plant tissues. Analytical methods].

Abstract

Different methods for nitrites and nitrates determination are described. Each step is considered separately, extraction, purification, determination of nitrate. During the last step, we examine the different analytical possibilities. Expecting for electrochemical methods, especially polarography, give satisfaction, the retained methods is that used as reference method for nitrate determination in meat and meat based products: Norme Afnor V04 - 409 et 410.