"OBJECTIVE: A variety of charcoal-containing devices are purported to minimize problems with odoriferous rectal gas. We objectively evaluated the ability of these devices to adsorb two malodorous, sulfide gases (hydrogen sulfide and methylmercaptan) instilled at the anus.Even without a medical research degree, I feel well qualified for a career in this kind of work, if some research employer would just give me a (wind) break.
METHODS: Via a tube, 100 ml of nitrogen containing 40 ppm of sulfide gases and 0.5% H(2) was instilled at the anus of six healthy volunteers who wore gas impermeable Mylar pantaloons over their garments. The fraction of the sulfide gases removed could be determined from the concentration ratio of sulfide gas: H(2) in the pantaloon space.
RESULTS: Measurements with no device in place showed that subjects' garments removed 22.0 +/- 5.3% of the sulfide gases. Pads worn inside the underwear removed 55-77% of the sulfide gases. The only product that adsorbed virtually all of the sulfide gases was briefs constructed from an activated carbon fiber fabric.
For comparison, most cushions are relatively ineffective, adsorbing about 20% of the gases."
Wednesday, March 3
A colleague in the gas physics department referred me to yet another interesting abstract from a professional journal.
Posted by rob at 16:24