RE: Distillation of urine

["Jean-Francois, Stephane" <stephane_jeanfrancois@merck.com>]

Have you tried building a color quench curve for your LSC machine ? This is
also an avenue you should explore. We built that curve for urine analysis
using a Health Canada protocol. You may contact them at:
http://www.hc-sc.gc.ca/ehp/ehd/rpb/index.htm

Stephane Jean-Francois, Eng. CHP,

Specialiste en radioprotection/Radiation Safety Specialist,
Gestion des risques/Risk Management
Merck Frosst Canada & Co.
tel: 514.428.8695
FAX: 514.428.8670
email:stephane_jeanfrancois@merck.com




-----Original Message-----
From: Wes Van Pelt [mailto:vanpeltw@idt.net]
Sent: Wednesday, December 06, 2000 2:01 PM
To: Multiple recipients of list
Subject: RE: Distillation of urine



Paul,
If you want to eliminate the time and effort of distillation, I would
suggest using more ls solution per vial, using more urine per vial, and
counting each vial longer.
This should keep you above the lower end of your detection limit.
Regards,
Wes
Wesley R. Van Pelt, PhD., CIH, CHP
Wesley R. Van Pelt Associates, Inc.
Consulting in Health Physics and Environmental Radioactivity.
 mailto://vanpeltw@idt.net

We have been performing analysis of some human urine samples for
levels of tritium that are at the lower end of our LSC to measure. We
have been distilling the urine to rid it of the color and chemicals
other than water. This distillation process is more than a burden.
Does anyone use a process that would eliminate the distillation
process?

Thanks,

Paul Lavely
UC Berkeley
lavelyp@uclink4.berkeley.edu
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