+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Can default ICRP f1 values be applied to determine radiation dose from the intake of diet-incorporated thorium?

, : Can default ICRP f1 values be applied to determine radiation dose from the intake of diet-incorporated thorium?. Radiation Protection Dosimetry 113(4): 403-407

Data on the daily urinary excretion of thorium (Th) was obtained from 15 non-exposed adult German subjects. A radiochemical neutron activation analysis method was developed and standardised especially for this purpose. The daily urinary excretion of 232Th was found to be in the range 1.9-14.9 micro Bq d-1 with a mean (+or-SD) value of 6.5 (+or-4.3) micro Bq d-1. Using this excretion value and reported data on dietary intake of Th for a similar German population, the gastrointestinal absorption factor (f1 value) proposed by the International Commission on Radiological Protection (ICRP) was tested. Although the daily excretion of 232Th observed in the present study was comparable to some of the currently reported values in certain other countries, it was higher than the excretion value calculated by applying the biokinetic model of Th proposed by ICRP for the dietary intake values. The study showed that the default ICRP values of the f1 factor for diet-incorporated Th may not be applicable.


PMID: 15797920

DOI: 10.1093/rpd/nch482

Other references

Matera, P.A., 2008: Relying on your H&P. Are we losing the art of clinical medicine to technology?. Jems 33(3): 60-70

Wingenfeld, K.; Hill, A.; Adam, B.; Driessen, M., 2007: Dexamethasone suppression test in borderline personality disorder: impact of PTSD symptoms. The purpose of the present study was to investigate the impact of post-traumatic stress disorder (PTSD) symptoms on hypothalamic-pituitary-adrenal axis feedback regulation in 18 female patients with borderline personality disorder (BPD) and 21 hea...

Wu, L.Y., 1968: Dactylotylenchus crassacuticulus, a new genes and new species (Tylen-chlnaei Nematoda). Several males and females were found in soil around grass not far from Peyto Lake in the Rocky Mountains of Alberta.

Kwan, J.T.C.; Almond, M.K.; Beer, J.; Cunningham, J., 1992: Evidence for tolerance to pulsed oral calcitriol in hemodialysis patients. Journal of the American Society of Nephrology 3(3): 697

Wang, Q.; Zhou, S.; Wang, L.; Lei, M.; Wang, Y.; Miao, C.; Jin, Y., 2013: ALDH2 rs671 Polymorphism and coronary heart disease risk among Asian populations: a meta-analysis and meta-regression. Mitochondrial aldehyde dehydrogenase-2 (ALDH2) is the principal enzyme involved in alcohol metabolism in humans. Emerging evidence has shown that the common rs671 G>A (Glu504Lys) polymorphism in the ALDH2 gene might play a critical role in incr...

Litonjua, A.A.; Carey, V.J.; Burge, H.A.; Weiss, S.T.; Gold, D.R., 2001: Exposure to cockroach allergen in the home is associated with incident doctor-diagnosed asthma and recurrent wheezing. A study was conducted to determine the relationship of exposure to indoor allergens and the development of doctor-diagnosed asthma in this children. 199 familes were recruited between 1994 and 1996 within 48 h of the birth of the index child at a...

Timon, C.; Reilly, K., 2006: Head and neck mucosal squamous cell carcinoma: results of palliative management. Objective: To document the outcome of patients deemed at initial diagnosis to be appropriate for palliative care.Materials and methods: Over a five-year period, all patients with head and neck mucosal squamous cell carcinoma (HNMSCC) were referred...

Arullani, P.; Caprilli, R.; Spaziani, G., 1967: pH changes in the different segments of the small and the large intestine: continuous recording by means of an endoradioprobe. Archivio Italiano Delle Malattie Dell'apparato Digerente 34(3): 279-289

Luo, Y.; Chen, Z.; Zhu, D.; Tu, H.; Pan, S.Quan., 2016: Yeast Actin-Related Protein ARP6 Negatively Regulates Agrobacterium-Mediated Transformation of Yeast Cell. The yeasts, including Saccharomyces cerevisiae and Pichia pastoris, are single-cell eukaryotic organisms that can serve as models for human genetic diseases and hosts for large scale production of recombinant proteins in current biopharmaceutical...

Staude E.; Jorisch W.; Ansorge W., 1982: Reactions with enzymes covalently bonded to heterogeneous ultra filtration membranes. Journal of Membrane Science 11(3): 289-296