CompuServe Messages

Hi, Jim– Welcome to the forum/section! Thanks for the info. I am pleased to hear there is a lot of watering of the eyes and other symptoms to drive one away before the danger gets severe, provided one does not generate too much H2S too fast. It suggests to me I am not being crazy when I heat a small specimen in my apartment, though I will continue to make sure the fan is on and the windows open when I do such things. Anyone care to figure roughly how big a specimen of sulfide ore would have to be to endanger one's life before one could be driven out of a room by the smell and irritation? Let's say 0 to 500 ppm in a minute is too fast, or 11 liters/minute is too fast (see Michael's post in this topic). How much sulfide ore can make 11 liters of H2S gas (at room temperature/pressure)? Without a ready supply of acid, and assuming there is not a lot of bisulfide in the ore, it may be quite large. Anyway, dripping a bit of HCl on a specimen and smelling the bubbles for H2S cannot be producing enough unless they are _very large_ bubbles. –Doug