General google search: benzene + "activated charcoal" http://tinyurl.com/2whslt5
Sometimes (methinks) we SERIOUSLY underestimate (or forget about) activated charcoal. The greatest benefit is that it aDsorbs (pulls to itself), and it will pull out of the bloodstream THROUGH the intestines to itself. Hence the benzene goes directly into the charcoal we ingest, then down the toilet with no stress to organs of neutralization/elimination.
Sure, there are some that believe it adsorbs nutrients, but there been at least one study done (on sheep, not humans...from this book:
"Charcoal added to the diet of sheep for six months did not cause a loss of nutrients, as compared with sheep not receiving charcoal. ... A level of 5 % of the total diet was given as charcoal. It did not affect the blood or urinary levels of calcium, copper, iron, magnesium, inorganic phosphorus, potassium, sodium, zinc, creatinine, uric acid, urea nitrogen, alkaline phosphatase, total protein or urine pH."
However (as I understand it), charcoal does adsorb some 'nutrients' in their unnatural/isolated form. But even if it does adsorb a few nutrients, that's nothing compared to safely getting out the benzene!
Apparently (from the Google search above) they sometimes use activated charcoal to determine benzene levels (start with pure activated charcoal, expose it to benzene, then test the benzene levels in the charcoal). SO, it would great for people to have bowls of it sitting around their house, too :)