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  • 1
    Electronic Resource
    Electronic Resource
    Body Burden of Caesium-137 in Japan (1967)
    [s.l.] : Nature Publishing Group
    Nature 214 (1967), S. 133-135 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A monthly monitoring programme at the National Institute of Radiological Sciences, Chiba, Japan, has recorded changes in the body burden of caesium-137 and of other radioactive isotopes. Caesium and potassium appear to be correlated in ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/214133a0
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  • 2
    Electronic Resource
    Electronic Resource
    Monoterpene glucosides from Berchemia racemosa
    Amsterdam : Elsevier
    Phytochemistry 27 (1988), S. 2869-2871 
    Details
    ISSN: 0031-9422
    Keywords: 2D-NMR ; Berchemia racemosa ; Rhamnaceae ; angelicoidenol glucoside ; bornanediol glucoside ; isoarborinol ; monoterpene glucoside
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(88)80678-2
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  • 3
    Electronic Resource
    Electronic Resource
    Determination of rare earth elements, U and Th in the standard rock GS-N by neutron activation analysis
    Amsterdam : Elsevier
    Inorganica Chimica Acta 140 (1987), S. 285-287 
    Details
    ISSN: 0020-1693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0020-1693(00)81105-6
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  • 4
    Electronic Resource
    Electronic Resource
    A comparative study of some nuclear methods for235U/238U isotopic ratios determination (1987)
    Springer
    Journal of radioanalytical and nuclear chemistry 113 (1987), S. 357-370 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract In the present work, a comparative study is made among nuclear methods for235U/238U ratios determination: activation analysis followed by high-resolution gamma-ray spectrometry, delayed neutron counting, passive gamma-ray and alpha spectrometry. Activation analysis followed by high-resolution gamma-ray spectrometry yielded a relative standard deviation down to 0.1% and a relative error of about 1% for standards of uranium enriched to 14%. Passive gamma-ray spectrometry using Ge(Li) detectors yielded a relative error down to 0.1% for enriched uranium and values even lower for the standard deviation. Passive gamma-ray spectrometry using Low Energy Photon Detector (LEPD) yielded a precision of 0.2% and a still better accuracy for enriched standards. In the case of alpha spectrometry, a relative error down to 0.5% and a precision of about 1% were obtained, also for enriched uranium standards. Delayed neutron counting allowed a relative standard deviation of about 7% and a relative error of about 2%, for standards of depleted uranium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02050508
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  • 5
    Electronic Resource
    Electronic Resource
    Analysis of Brazilian snake venoms by neutron activation analysis (1991)
    Springer
    Journal of radioanalytical and nuclear chemistry 151 (1991), S. 271-276 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Instrumental neutron activation analysis (INAA) has been applied to multielemental determinations of Brazilian snake venoms from the species: Bothrops jararacussu, Crotalus durissus terrificus and Bothrops jararaca. Concentrations of Br, Ca, Cl, Cs, K, Mg, Na, Rb, Sb, Se and Zn have been determined in lyophilized venoms by using short and long irradiations in the IEA-RI nuclear reactor under a thermal neutron flux of 1011 to 1013 n0 ·cm−2·s−1. The reference materials NIST bovine Liver 1577 and IUPAC Bowen's Kale were also analyzed simultaneously with the venoms to evaluate the accuracy and the reproducibility of the method. The concentrations of the elements found in snake venoms from different species were compared. The Crotalus durissus terrificus venoms presented high concentration of Se but low concentrations of Zn when these results are compared with those obtained from genera Bothrops venoms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02035485
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  • 6
    Electronic Resource
    Electronic Resource
    Determination of rare earth elements in the biological reference materials Pine Needles and Spruce Needles by neutron activation analysis (1998)
    Springer
    Journal of radioanalytical and nuclear chemistry 233 (1998), S. 59-61 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Instrumental neutron activation analysis was applied to determine La, Ce, Nd, Sm, Eu, Tb, Yb, Lu and Sc in two biological reference materials: NIST 1575 Pine Needles and BCR-CRM 101 Spruce Needles. The purpose was to contribute to the reference data for these two reference materials. The results were obtained with a good precision (relative standard deviations less than 15%). For the Pine Needles reference material there are already some proposed values and our results showed, in general, a good agreement with the data published. The contribution of uranium fission products to La, Ce, Nd and Sm was evaluated and considered in the determination of these elements. Interferences in the determination of rare earth elements in biological materials are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02389648
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  • 7
    Electronic Resource
    Electronic Resource
    Solvent extraction studies using tetracycline as a complexing agent (1989)
    Springer
    Journal of radioanalytical and nuclear chemistry 130 (1989), S. 111-119 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A chemical procedure has been developed for the separation of U, Th, Fe, Sc, Na, Ta and Mo, which interfere in neutron activation analysis of the lanthanide elements in rocks. This methods in based on the extraction of interferents, before irradiation of the samples, using a solution of tetracycline in benzyl alcohol. The lanthanide elements remain in the aqueous phase and are coprecipitated with calcium oxlate or ferric hydroxide for irradiation and subsequent determination by gamma-ray spectrometry. Conditions for the separation of these interferences are examined determining the extraction curves. The chemical separation procedure was applied in the analysis of lanthanides in geological materials and the results showing the accuracy and the reproducibility of the method are presented. The sensitivity for all the lanthanides was determined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02037705
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  • 8
    Electronic Resource
    Electronic Resource
    Copper, cadmium, and zinc concentrations in aquatic food chains from the upper sacramento river (california) and selected tributaries (1995)
    Springer
    Archives of environmental contamination and toxicology 29 (1995), S. 484-491 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract Metals enter the Upper Sacramento River above Redding, California, primarily through Spring Creek, a tributary that receives acid-mine drainage from a US EPA Superfund site known locally as Iron Mountain Mine. Waterweed (Elodea canadensis) and aquatic insects (midge larvae, Chironomidae; and mayfly nymphs, Ephemeroptera) from the Sacramento River downstream from Spring Creek contained much higher concentrations of copper (Cu), cadmium (Cd), and zinc (Zn) than did similar taxa from nearby reference tributaries not exposed to acid-mine drainage. Aquatic insects from the Sacramento River contained especially high maximum concentrations of Cu (200 mg/kg dry weight in midge larvae), Cd (23 mg/kg dry weight in mayfly nymphs), and Zn (1,700 mg/kg dry weight in mayfly nymphs). Although not always statistically significant, whole-body concentrations of Cu, Cd, and Zn in fishes (threespine stickleback, Gasterosteus aculeatus; Sacramento sucker, Catostomus occidentalis; Sacramento squawfish, Ptychocheilus grandis; and chinook salmon, Oncorhynchus tshawytasch) from the Sacramento River were generally higher than in fishes from the reference tributaries.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00208378
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  • 9
    Electronic Resource
    Electronic Resource
    Neutron activation analysis of medicinal plant extracts (1995)
    Springer
    Journal of radioanalytical and nuclear chemistry 195 (1995), S. 185-193 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Instrumental neutron activation analysis was applied to the determination of the elements Br, Ca, Cl, Cs, Fe, K, La, Mg, Mn, Na, Rb and Zn in medicinal extracts obtained fromCentella asiatica, Citrus aurantium L., Achyrolcline satureoides DC, Casearia sylvestris, Solano lycocarpum, Zingiber officinale Roscoe, Solidago microglossa andStryphnondedron barbatiman plants. The elements Hg and Se were determined using radiochemical separation by means of retention of Se in HMD inorganic exchanger and solvent extraction of Hg by bismuth diethyldithiocarbamate solution. Precision and accuracy of the results were evaluated by analyzing biological reference materials. The therapeutic action of some elements found in plant extracts analyzed is briefly discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02036488
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  • 10
    Electronic Resource
    Electronic Resource
    Determination of trace elements in lichens by instrumental neutron activation analysis (1997)
    Springer
    Journal of radioanalytical and nuclear chemistry 217 (1997), S. 111-115 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Instrumental neutron activation analysis has been applied to analyze epiphytic specimens of the lichenCanoparmelia texana. Samples collected from the barks of the trees were previously cleaned, lyophilized and ground to be irradiated under a thermal neutron flux in the IEA-R1 nuclear reactor. Elements Al, As, Br, Ca, Cd, Cl, Co, Cr, Cs, Fe, Hf, K, La, Ce, Nd, Sm, Eu, Tb, Yb, Lu, Mg, Mn, Na, Rb, Sb, Sc, Se, Th, Ti, U, V and Zn were determined quantitatively by using short and long irradiations. Comparisons were made between the results for washed and unwashed samples as well as those collected in two different years, from individual palm trees and also from different sites of São Paulo State. The precision and the accuracy of the method were evaluated by analyzing NIST 1572a Citrus Leaves, IAEA 336 Lichen and USGS W-1 Rock reference materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02055358
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