i am doing a STB on MHRB using toluene as my non polar solvent , so giving it a non polar wash with sodium carbonate before evaporating.
will this result in the loss of N oxide and jungle ? as i want these in my spice

SWIM's fairly sure there shouldn't be N-Oxides in there at all. The jungle should remain. SWIM's never really known anyone to do a wash on toluene or xylene, as usually used to get a whiter product with naphtha. Evaping toluene is a fairly nasty route. The preferable manner of using xylene or toluene is with the FASA method.

It shouldn't, because as the freebase they should be insoluble in basic water. Evaporating off toluene or any other solvent will leave you with a heap of shit. Do FASA, a freeze precip, anything but leaving the shit to dry to an oily contaminated mess.