TABLE 2: Beta Particle and Electron Capture Solution Standards


Radionuclide SRM Approx. Reference Expanded Solution Chemical Number Bq·g-1


Time Uncertainty Mass (%)


Barium-133 * 4251C 500,000 Sep 1993 Carbon-14


4222C 50,000 4943 10,000 Sep 1990


Cesium-137 * 4233E 300,000 Sep 2005 Chlorine-36 Cobalt-60 *


4915F 60,000


Europium-152* 4370C 90,000 Holmium-166m* 4274 Hydrogen-3† Hydrogen-3 Hydrogen-3 Hydrogen-3


4361C 4926E


20,000 2


5,000


Iodine-129* 4949C 3,500 Iron-55


Lead-210 Nickel-63*


9,000


4929F 50,000 4337


Dec 1984 Nov 2005 Feb 1987


0.5 5


Feb 2006 0.81-2.4 Sep 1998 Sep 1998


1.1 1.1


Plutonium-241* 4340B Radium-228 4339A Strontium-90* 4239 Strontium-90* 4919I


4927F 600,000 Sep 1998 4947C 300,000 Mar 1987 Mar 1993 Nov 2005 June 2006 Nov 2005 June 2007 #


4226C 45,000 250 200


50,000 4,000


Dec 2006 Dec 2006


Technetium-99 4288B 30,000 May 2008


5 3 5 5 5


BaCl2


500 20


0.5 0.5 0.7


4 5 5 5 5 5 5 5 5 5


CsCl NaCl CoCl2 EuCl3 HoCl3 H2 H2


Solution Notes


Form Composition (g)


1 M HCl


0.8 5n-Hexadecane n-Hexadecane 0.7 0.8 0.5 1.1


1 M HCl H2


O


1.1 5H2 1.2 0.7 1.7 2.4 0.9 3.8 #


OH2 OH2 OH2


Toluene NaI


FeCl3


Pb (NO3 NiCl2


Pu(NO3 Ra(NO3 SrCl2 SrCl2


)2


)6 )2


1 M HCl 1 M HCl 1 M HCl O O O


Toluene


0.01 M NaOH 1 M HCl


1 M HNO3 1 M HCl


3 M HNO3 1 M HNO3 1 M HCl 1 M HCl


KTcO4 0.001 M KOH


* License Certification is required by NIST for this material. # Material in preparation. † This standard is not radioactive material for licensing or shipping purposes.


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