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Re: Organic Chemisty class

From: Katya (anonymous@obgyn.net)
Fri, 28 Feb 2003 10:55:21 -0600 (CST)


Dear SB,

Yes, working in the hood would actually help because the density of vapors from the reaction you are running will be greater than that of neighboring reactions. The hood will suck most of those vapors up - especially valuable is you spill something. Thus, working in the hood, you are eliminating the primary exposure threat.

Also, since most students will not be working in hoods, you will be further away from them, and concentration of chemicals from a point source is inversely proportional to the distance in the third power because molecules can diffuse in any direction, and most will diffuse away from you.

Hmmm... let me write an equation, that will make more sense:

[concentration where you are] = [initial concentration]/(distance)^3

Another thing you want to be very careful with is the mercury thermometers if you use any. Ask your TA to show you safe handling technique. They tend to be fragile. I had a student who cut himself with a broken mercury thermometer, thus injecting some mercury into his bloodstream. No big deal for an adult as long as exposure is minimal, but a very different situation for a pregnant woman.

Best wishes and I think you'll be fine as long as you are open with your TA/staff and careful.

:)

--
Katya

At Fri, 28 Feb 2003, SB wrote: > >Thanks Katya and Julie. I wasn't sure if I would get the answers on >this forum so I am really glad you replied. Would experimenting under >hood benefit since other students in the class will be performing the >same experiment?




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