NF EN 16136

Automotive fuels - Determination of manganese and iron content in unleaded petrol - Inductively coupled plasma optical emission spectrometry (ICP OES) method

Le présent document spécifie une méthode spectrométrique d'émission optique par plasma à couplage inductif pour la détermination des teneurs en manganèse, de environ 0,5 mg/l à environ 7,5 mg/l, et en fer, de environ 1,4 mg/l à environ 6,0 mg/l dans l'essence sans plomb contenant jusqu'à 3,7 pourcent (m/m) d'oxygène. Les teneurs en fer et en manganèse sont calculées par comparaison avec des solutions d'étalonnage préparées à partir de composés de manganèse et de fer appropriés. Un étalon interne est utilisé pour corriger les effets de viscosité et de pression de vapeur.

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