There have been people studying Ar in basaltic glasses by EPMA. You might want to check out these papers for more information and maybe the authors can provide more details.
This study used the virtual standard feature in PFE as John suggests and peaked on Ar-bearing materials they had synthesized:
Jackson, C.R., Williams, C.D., Du, Z., Bennett, N.R., Mukhopadhyay, S. and Fei, Y., 2021. Incompatibility of argon during magma ocean crystallization. Earth and Planetary Science Letters, 553, p.116598.
Here they used a calibration curve approach (if only they had PFE)
:
Fabbrizio, A., Bouhifd, M.A., Andrault, D., Bolfan-Casanova, N., Manthilake, G. and Laporte, D., 2017. Argon behavior in basaltic melts in presence of a mixed H2O-CO2 fluid at upper mantle conditions. Chemical Geology, 448, pp.100-109.
No information on EPMA standardization. The Fabbrizio paper states that they used one of their materials as standard:
Schmidt, B.C. and Keppler, H., 2002. Experimental evidence for high noble gas solubilities in silicate melts under mantle pressures. Earth and Planetary Science Letters, 195(3-4), pp.277-290.
The biggest problem I see is getting your hand on such an Ar-bearing material to at least peak on unless the abundance is high enough in the sample already.