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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 48 (1976), S. 1443-1445 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 52 (1993), S. 399-405 
    ISSN: 1432-0827
    Keywords: Rhesus monkey ; Bone ; Diet ; Age ; Sex ; Bone mineral
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary The effect of diet, age, and sex on the mineral content of primate bones was determined for free-ranging rhesus monkeys (Macaca mulatta) from the Caribbean Primate Research Center. Monkeys in this study were of known age and sex and had been provided with either a low protein (15%) or a high protein (25%) diet for most of their lives. Instrumental neutron activation analysis was used to assess bone mineral content. Results showed that diet had no significant effect on the bulk mineral composition of Ca, Mg, Br, and Cl in the bones. Of the minerals analyzed, only Na and Mn showed significant diet-related effects. The bone Ca content was found to be lower in females than in males when controlled for age. Finally, Ca content was found to be higher in young adults, lower at middle age, and higher in old age in both male and female monkeys. In conclusion, this study has shown that increasing protein content in the diet does not change the bulk mineral content of primate bones. The nondietary effect that Ca content of monkey bones is lower during middle age has not been previously reported.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0827
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract To evaluate the accuracy of bone mineral composition determination by electron microprobe analysis (EDX) the measurements have been compared to instrumental neutron activation analysis (INAA) and chemical analysis (ICPES). Bone specimens from five femoral heads were used. The trabecular content of calcium (Ca) and phosphorus (P) was analyzed by the three different methods. The FDX method allows for a microstructural analysis of intact, methylmetacrylate-embedded, undecalcified bone and the measuring points can thus be distinctly identified centrally in each trabecula. The analysis yielded 25.8±0.7 wt% Ca and 10.5±0.1 wt % P, compared with 22.2±0.5 and 23.0±1.0 wt % Ca, and 9.83±0.21 and 10.02±0.44 wt % P for INAA and ICPES, respectively. The EDX analysis was calibrated by consecutive measurements of a hard, pressed tablet of hydroxyapatit of known content. The mean Ca content deviated with-0.38 wt % from the given content and P with-0.89 wt %. We could not verify any particular interference from the embedding procedure, however, it is possible that the relatively lower P content still may reflect this. The magnesium (Mg) concentration was 0.31±0.02 wt % by EDX and 0.26±0.02 wt % by INAA. The EDX analytical method provides a useful tool for simultaneous elemental quantification in bone. It has the advantage of permitting the use of cation bone biopsy material and thus allowing for a unique microstructural evaluation of the degree of mineralization. By comparison with other established methods, the assessment of accuracy and reliability indicates that the measurements are well in range for the major constituents, Ca and P, whereas INAA is more sensitive in determining trace elements.
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of radioanalytical and nuclear chemistry 148 (1991), S. 81-92 
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Concentrations of major, minor and trace elements were measured in four soil profiles from south-central Ontario. The mean concentration values reported are probably representative of elemental levels in soils formed from sediments reworked by lacustrine and fluvial processes and weathered over the last 12 000 years. The older soils in the sequence (R12, R15 and BRIM1) show declining Na, K, and Al, mainly from Ca dilution, especially in the lower horizons. Iron and Mg levels were not affected by the variations in the Ca concentrations. Arsenic, Br, and Sb concentrations did not increase appreciably in surface A horizons, indicating no measurable airfall influx of industrial pollutants. The relative increase in Mn/Al in the lower horizons of the older soils may be related to leaching by soil or ground water movement.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of radioanalytical and nuclear chemistry 148 (1991), S. 285-294 
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A stratigraphic and geochemical study of alpine soils, which formed in later Pleistocene (late glacial) and Neoglacial deposits in the Wind River Mountains of western Wyoming, indicates that these soils have been affected by air-fall influx of inorganic pollutants. Arsenic, bromine, and antimony appear to have been deposited in surface soils by incorporation of aeolian materials which were presumably transported by prevailing winds from industrial sources, including coal-burning operations. Because vanadium was not found in surface soils at concentrations above site-specific background levels, oil-fired energy generating stations were not deemed to be significant sources of surface soil pollution in the region. Acid-rain effects were not observed in the soils.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of radioanalytical and nuclear chemistry 114 (1987), S. 393-401 
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Ninety-two samples of ceramics from Kommos in south-central Crete, covering the Middle Minoan periods MMI to MMIII have been analyzed by instrumental neutron activation using the SLOWPOKE reactor at the University of Toronto. The sherds represented three basic fabric types: a fine buff fabric, a stone tempered buff fabric, a coarse, stone tempered red fabric. Also included in the study were three sherds from nearby archaeological sites and six Kommos sherds which were archaeologically assessed as exhibiting atypical fabrics. The three fabric types were sortable into two distinct chemical groups, and two similar groups. Little temporal variation in chemical composition was found in the fine buff wares, and the atypical fabrics fitted neatly into three of the chemical groups.
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  • 7
    ISSN: 1573-2983
    Keywords: Airborne pollutants ; soils ; northwestern China ; palaeosols
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Medicine
    Notes: Abstract Surface palaeosols in two tills and a diamicton from an area in northwestern China were analysed for geochemical pollutants. Elevated levels of Br, As and Sb indicate that pollution from coal-burning and/or coal-fired electricity generating stations is delivered by aeolian transport into palaeosols dating from the last glaciation. Because the climate in the field area is sub-humid (precipitation 〈760 mm) the relative movement of soluble elements in palaeosols dating from early and late stades of the last glaciation is not expected to be high. The glacial and aeolian parent materials of the palaeosols indicate differences that are probably related to their source areas and to the incorporation of geochemical pollutants.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of radioanalytical and nuclear chemistry 110 (1987), S. 283-291 
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract For more than a decade, archaeometrists have been analyzing archaeologically recovered human bones in an attempt to relate their trace element contents to diet. Although the problems of diagenesis have been recognized, the variable effects have been difficult to establish. In this paper, an assessment is made of the analytical reliability of the INAA determination of major and trace elements, using their short-lived radioisotopes in both regular and defatted modern cancellous bone, and in modern cortical bone. This modern bone information is then compared with analytical data for bones from Egyptian mummies ranging in age from ≈2000 to ≈3700 BP, and with normallyburied 11 th century French bones. Diagenetic effects may readily be detected by the measurement of elevated quantities of V, Mn, and Al in soil-contaminated bones. The Ca to P concentration ratios and the organic content may also be used to separate bone from diagenetically altered archaeological specimens.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of radioanalytical and nuclear chemistry 110 (1987), S. 293-302 
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Archaeological reconnaissance in the Yemen Arab Republic produced samples of mediaeval Islamic ceramics in a 100 km2 region centred at Zabid. The ceramics dated from 700 A. D. to 1750 A. D. and initial research indicated that they were all locally made products. Twelves types of ceramics were selected for sampling on the basis of stylistic decoration; nine types were red bodied and three types were white bodied. Six laboratory samples of each type were subjected to neutron activation analysis for the short-lived isotope producing elements using the SLOWPOKE reactor at the University of Toronto. The results showed very tight sherd groupings, with all the red wares of discrete composition and all the white wares of a different discrete composition. Hence the same two clay sources have been utilized over a thousand years. However, a comparison of both ware types with Nile alluvium red ware and Aswan white ware from Egypt, tested for the same elements, produced unexpected results. Although the white wares from Egypt and Yemen were quite different chemically, the red wares showed remarkable chemical similarity. In order to subject the data to a more rigorous statistical testing, a multivariate discriminate analysis programme was applied. The analysis confirmed that the Yemeni and Egyptian white wares could easily be separated. The Yemeni red and Nile alluvium red wares were also separated into the two groups with a very high prediction rate, in spite of the fact that, on visual inspection of the data, no substantial differences were evident. It is clear, therefore, that artifact analysis must be conducted with due respect given to the archaeological context, the elemental chemistry, and sound statistical procedures.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of radioanalytical and nuclear chemistry 131 (1989), S. 289-298 
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract During the course of field work in the Chamonix-Argentière area of the Western Alps of France, low pH's (by field testing) were measured in soils of later Pleistocene and Holocene age. Subsequently, data derived from laboratory investigations showed high electrical conductivities (mainly from high SO 4 2− ) and pH values as low as 3.9 in epipedons of Inceptisols and Spodosols. Proximity to coal-fired electrical generating stations and industrial activity in le Fayet and Sallanches (20 km to Northwest) may generate considerable output of SO 4 2− ions which, along with arsenic, antimony and bromine, survive transport up valley by anabatic wind systems. Because the country rock in the Chamonix area is largely an acidic crystalline complex of granite and gneiss, the tendency for lower pH's in the surface soils may have a disastrous effect on the coniferous forests in the area.
    Type of Medium: Electronic Resource
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