Measurement specificity, nitrogen species

This chapter focuses on several specific current challenges in the measurement of the nitrogen species. Examples of past results are included to give an indication of the insights into atmospheric processes that are potentially realizable from field studies. Many laboratories around the world are involved in these studies. The examples are drawn disproportionately from our laboratory simply for convenience. Although other examples can be cited, the ones included here are to a great extent representative of the field s results. 

Specific surface area measurements and nitrogen isotherm adsorptions were determined on a Micromeritics ASAP 2405, with a pretreatment of 3 h at 150°C under secondary vacuum, to avoid thermal degradatation of grafted ligands. Castaing microprobe analyses were recorded on a JEOL JXA 8800 in order to confirm homogeneous distribution of ligands and active species. 

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