Numéro de référence
ISO 8916:1988
ISO 8916:1988
© ISO 2024
ISO 8916:1988
Éthylène à usage industriel — Dosage des traces de composés polaires — Préparation d'échantillons concentrés par piégeage cryogénique
Edition 1
1988-12
1988-12
Annulée
Résumé
Specifies a method of sampling by scrubbing at dry ice temperature (195 K). Permits the concentration of traces of all the less volatile polar compounds (water, alcohols, esters, acids, amines, etc.) in a small amount of liquid phase practically without any interference due to adsorption phenomena on the relatively small internal surfaces of the scrubbing absorber. This sampling technique permits the exact determination of all these polar compounds at contents greater than 0.01 mg/m^3, at normal temperature and pressure. Is also applicable to the determination of hydrocarbons with a higher boiling point (for example traces of oil in ethylene).