Document Detail


Organically bound tritium (OBT) formation in rainbow trout (Oncorhynchus mykiss): HTO and OBT-spiked food exposure experiments.
MedLine Citation:
PMID:  23208241     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In order to determine the rate of organically bound tritium (OBT) formation, rainbow trout (Oncorhynchus mykiss) were exposed to tritiated water (HTO) or OBT-spiked food. The HTO (in water) exposure study was conducted using a tritium activity concentration of approximately 7000Bq/L and the OBT (in food) exposure study was conducted using a tritium activity concentration of approximately 30,000Bq/L. Fish in both studies were expected to be exposed to similar tritium levels assuming 25% incorporation of the tritiated amino acids found in the food. Four different sampling campaigns of HTO exposure (Day 10, 30, 70, 140) and five different sampling campaigns of OBT-spiked food exposure (Day 9, 30, 70, 100, 140) were conducted to measure HTO and OBT activity concentrations in fish tissues. OBT depuration was also evaluated over a period of 30 days following the 140d exposure studies. The results suggested that the OBT formation rate was slower when the fish were exposed to HTO compared to when the fish were ingesting OBT. In addition, the results indicated that OBT can bioaccumulate in fish tissues following OBT-spiked food exposure.
Authors:
S B Kim; C Shultz; M Stuart; E McNamara; A Festarini; D P Bureau
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-17
Journal Detail:
Title:  Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine     Volume:  72C     ISSN:  1872-9800     ISO Abbreviation:  Appl Radiat Isot     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-12-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9306253     Medline TA:  Appl Radiat Isot     Country:  -    
Other Details:
Languages:  ENG     Pagination:  114-122     Citation Subset:  -    
Copyright Information:
Crown Copyright © 2012. Published by Elsevier Ltd. All rights reserved.
Affiliation:
Environmental Technologies Branch, Chalk River Laboratories, AECL, Chalk River, Ontario, K0J 1J0 Canada. Electronic address: kimsb@aecl.ca.
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