mass spectrum chronography, among other things.

Temperament

Temperature

Temperate

Temperance

Chronic

Chronicle

Chronological

Chronography

"Chrono-" is the most usual prefix for time (also "chron-"):

chronic, chronicle, chronobiology, chronography, chronology, chronometry, chronoscope, chronotron

etc.

R. W. Burgess has written:

'Velocette motor cycles'

'Studies in Eusebian and Post-Eusebian chronography' -- subject(s): Chronology, Greek Chronology, History

This looks to me like a confusion with "chromatography". Say you put some liquid substance on a piece of paper. Some molecules will move (diffuse) faster than others; thus, the substance becomes separated.