Instrumental analysis of phosphorus in organic material using high energy beta-counting after photoactivation (IPAA)

C, N, O, F and P can be analyzed by instrumental photon activation analysis (IPAA) including decay curve analysis. The interference of 30 P ( T 1/2 = 149.9 s) by 15 O ( T 1/2 = 122.2 s) can be ruled out by direct positron measurement making use of the largely different maximum β + -energies of both...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2008-04, Vol.276 (1), p.251-255
Main Authors: Goerner, W., Haase, O., Ostermann, M., Segebade, Chr
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
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Summary:C, N, O, F and P can be analyzed by instrumental photon activation analysis (IPAA) including decay curve analysis. The interference of 30 P ( T 1/2 = 149.9 s) by 15 O ( T 1/2 = 122.2 s) can be ruled out by direct positron measurement making use of the largely different maximum β + -energies of both nuclides (3.24 MeV and 1.73 MeV, respectively). Interference by carbon ( 11 C) can be avoided by sub-threshold activation with 17 MeV bremsstrahlung. The short half-life of 30 P allows a high productivity of the method. Reliability was demonstrated in the range of 0.2%–2% P (detection limit = 40 μg/g). Analysis of a certified reference material (BCR-CRM 063) yielded excellent agreement with the certified data.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-007-0441-5