EnigmaticBiker

any info on how this is done, im guessing reacting with oxalic acid, is seperation from the oxalic acid straight forward or a little tricky?

Wikipedia suggests it should be easy, given its' low solubility in water (~0.0067 g/l) versus oxalic acid (~143 g/l) at room temps.

BTW Barium Carbonate is not nearly as hazardous as Barium Nitrate due to its insolubility in H20; although Barium Nitrate produce a more brilliant green than carbonate.

I disagree, at a guess, the 0.1M HCl present in stomach juices should be strong enough to dissolve an appreciable amount of BaCO3. This is why the sulphate is used for X-ray investigations.
The dose absorbed from the ingestion of BaCO3 will be less than that of an equivalent amount of Ba(NO3)2 but still enough to cause illness.

I'm not sure if S.T.A.L.K.E.R. Shadow of Chernobyl counts as an RPG, it is an attempt at a hybrid between RPG and FPS. It allows free-ish movement within the zone, trading with others, wildlife and mutants, different factions etc.

Fantastic atmosphere and realistic landscape (much of the scenery and buildings are rendered from photographs) and the AI is pretty good.

Buggy as hell though, patches MUST be applied. The user forums are essential with many fixes and add-on features.

Ok well here is a little lesson I uploaded for you all. Watch out 1.03 in to the clip just over his right shoulder for what looks like someone testing 1gram BP Either that or it was filmed before the smoking ban! Enjoy.

Pity there isn't more of it.

Like other composting, digesting processes it's quite complex, involving a chain of different bacteria and their enzymes. Some of the bacteria capable of producing nitrates are amongst the earliest creatures on the planet.
I suspect that, as energy becomes more expensive, some of these old processes will be used again on an industrial scale.

I'm notsurei would be too keen on the tasting of the manure heap to see how it was progressing!

Bet that is an acquired taste.

I'm not surprised with the method, in 'ye olde chemistrie' it was probably common to taste and handle stuff to analyse it.