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Experimental Verification for Standard Analysis Procedure of 241Am in Food |
LIU Qing-fen, LIU Shu-tian1, PAN Jing-shun2, et al |
Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peijing Union Medical College, Tianjin 300192 China |
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Abstract Objective The briefly experimental verification for 《determination of 241Am in food》 has been described. Methods The overall recovery, the MDL of method and decontamination experiment has been done by standard analysis procedure. Results The overall recovery is 76.26 ±4.1%, The MDL is 3.4×10-5 Bq/g ash, decontamination factor is higher than 103 for Po, 102 for U, Th, Pu and 60 for 237Np. Conclusion The results showed that the overall recovery is quite high and reliable, the MDL of method is able to meet examining 241Am limited values in foods. The obtained decontamination factors of recommended procedure can meet analysis of 241Am in food examination. Verifying results of the procedure are satisfied by using 243Am spike and 241Am standard reference material.
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Received: 15 April 2005
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