  The Alice far-UV imaging spectrograph (700-2050 A) acquired over 70,000
spectral images during Rosetta's 2-year escort mission, including over 20,000
in the months surrounding perihelion when the comet activity level was highest.
We have developed automated software to fit and remove ubiquitous H, O, C, S,
and CO emissions from Alice spectra, along with reflected solar continuum and
absorption from gaseous H2O in the comet's coma, which we apply to a "grand
sum" of integrations taken near perihelion. We present upper limits on the
presence of one ion and 17 neutral atomic species for this time period. These
limits are compared to results obtained by other Rosetta instruments where
possible, as well as to CI carbonaceous chondrites and solar photospheric
abundances.
