In my case, I will insert a boat full of sulfur powder into a tube furnace, and I will purge N. So, I want to avoid the gasses contaminate the environment. Thanks in advance.
Sulphur nitrides exist, but none of them is made by direct reaction S + N2 .. most probably you will get sulphur vapour carried by N2 gas. You can trap it with a cold trap or glass-wool, then analyse the gases with GC-MS. Please let me know what you get:)