pslyde, I have no Idea what you are using this ammonia on, or why, so it is hard to give any advice
Except that ammonia and metals can create explosives, for this reason you should have a very good understanding of the reactions you use it in, also ammonia waste should always be kept separate from other waste for this very reason.
surfactants are usually soaps, surely you can find some more pure ammonia solution, and boiling is a good way to put ammonia in the air as gas, depending on concentration you could just be boiling off ammonia gas, just wasting what ammonia you have, ammonia has a very low boiling point.
ammonia is a gas its boiling point is -33.3 deg C. or -28 deg F.
ammonium hydroxide's boiling point can be below the boiling point of water.
25% NH4OH boiling point 37.7 deg C. or 99.8 deg F.
32% NH4OH boiling point 24.7 deg C. or 764 deg F.
I do not see how you could boil and clean out the soap or whatever the surfactant is unless you are talking about distilling, and even that would not make much sense to me.
Surfactants are usually organic compounds that are amphiphilic, meaning they contain both hydrophobic groups and hydrophilic groups Therefore, a surfactant contains both a water insoluble (or oil soluble) component and a water soluble component. Surfactants will diffuse in water and adsorb at interfaces between air and water.
There are also metal anionic surfactants with: sulfate, sulfonate, phosphate, and carboxylates. alkyl sulfates, ammonium lauryl sulfate, sodium lauryl sulfate as well as others.
Refining is dangerous enough, ammonia in refining is extremely dangerous, but adding organic Surfactants to this could really case a dangerous situation in my opinion.
Look for clear household ammonia, try a different store, the Grocery stores, Wall-mart Bi-mart, True Value hardware, Lowe's or other hardware stores, you may even have it at the dollar store.