Ngwaahịa a bụ ihe na-acha ọcha na-acha ọcha, nke na-adịghị egbu egbu, enweghị ụtọ, na-adịghị edozi na mmiri na ethanol. Ngwaahịa AG-MS nwere ike dị elu, obere iyi akwa, nha nwere ike ịgbanwe, olu pore, mpaghara elu akọwapụtara, oke njupụta na njirimara ndị ọzọ, enwere ike ịhazi ya dị ka ihe ndị a chọrọ n'ihe ngosi niile, nke a na-ejikarị na adsorbent, hydrodesulfurization catalyst carrier, hydrogenation denitrification ihe na-ebu ibu, CO sọlfọ na-eguzogide mgbanwe ihe na-ebu ibu na ubi ndị ọzọ.