RE: C14 Natural abundance

["Broseus, Roger" <rbroseus@exchange.nih.gov>]

This topic has been covered before on radsafe.  You might wish to refer
to archives.  Be sure to see: "Carbon-14 in the Environment."

NCRP Report No. 81 is one in a series covering various radionuclides
which are perceived as having potential impact on the exposure of man.
The Report summarizes the available information on carbon-14 in terms of
its physical properties, sources, distribution in the environment,
sampling and analysis, biology, projected impact, dosimetry, and waste
management. The Report also considers and evaluates the importance of
carbon-14 as a potential source of local and world-wide radiation
exposure.

See www.ncrp.com.

-- Roger
   301-496-2253
   Email: RogerB@nih.gov


	----------
	From: 	Jean-Michel Mure[SMTP:jm.mure@andra.fr]
	Reply To: 	radsafe@romulus.ehs.uiuc.edu
	Sent: 	Friday, December 19, 1997 4:45 AM
	To: 	Multiple recipients of list
	Subject: 	C14 Natural abundance

	Hi,

	I would like to work out what is  the amount of activity due to
C14 in the
	human body.
	Can someone tell me what is the natural abundance of C14.

	Thanks,

	JM


	***************************************************
	Jean-Michel MURE
	ANDRA
	DSU/SR/Radiological Protection and Environmental Surveillance
	Parc de la Croix Blanche
	1-7, rue Jean Monnet
	92298 CHATENAY MALABRY Cedex
	FRANCE
	****************************************************
	Tel : 01 46 11 83 74
	Fax : 01 46 11 80 13
	****************************************************
	Email : jm.mure@andra.fr
	****************************************************