Author/Authors :
Brewer، نويسنده , , Paul J. and di Meane، نويسنده , , Elena Amico and Vargha، نويسنده , , Gergely M. and Brown، نويسنده , , Richard J.C. and Milton، نويسنده , , Martin J.T.، نويسنده ,
Abstract :
We have developed a dynamic reference standard of gaseous formaldehyde based on diffusion of the sublimate of trioxane and thermal conversion to formaldehyde in the gas phase. We have also produced a gravimetric standard for formaldehyde in a nitrogen matrix, also by thermal conversion of the sublimate of trioxane. Analysis of the gravimetric standard with respect to the dynamic standard has confirmed the comparability of the static and dynamic gravimetric values.
Keywords :
Gas metrology , Formaldehyde standards , dynamic methods , Trioxane
