Neutron activation analysis of bald eagle feathers: analytical precision and sources of sampling variation

1985 ◽  
Vol 63 (12) ◽  
pp. 2707-2718 ◽  
Author(s):  
Gary R. Bortolotti ◽  
Jon C. Barlow
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Chemical Elements ◽  
The Body ◽  
Bald Eagle ◽  
Haliaeetus Leucocephalus ◽  
Bald Eagles ◽  
Chemical Profiles ◽  
Significant Patterns

Instrumental neutron activation analysis was used to investigate the feather chemistry of wild and captive bald eagles (Haliaeetus leucocephalus). This paper documents variation that may be attributable to method of feather collection, laundering of samples, and precision of the analysis, as well as the variability within and among feathers from different locations on the body of individual birds. For most samples, reliable estimates could be made of the concentrations of bromine, magnesium. manganese, sodium, vanadium, aluminum, chlorine, calcium, and sulphur. Iodine and copper were detected but could not be measured precisely. There were highly significant patterns of variation along the length of a single feather for most chemical elements. The vane and calamus portions of feathers differed in chemical composition and the concentrations of the elements in the two parts were not correlated. Feathers belonging to the same molt but collected several months apart had similar chemical profiles. Variation within an individual feather and among feathers from different parts of the body necessitates rigorous consistency in the method of sampling feathers. Possible explanations for the observed patterns of elemental composition are discussed.

Some sources of variation in the elemental composition of Bald Eagle feathers

1988 ◽  
Vol 66 (9) ◽  
pp. 1948-1951 ◽  
Author(s):  
Gary R. Bortolotti ◽  
Jon C. Barlow
Keyword(s):  
Neutron Activation Analysis ◽  
Instrumental Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Annual Variation ◽  
Bald Eagle ◽  
Haliaeetus Leucocephalus ◽  
Bald Eagles ◽  
Physiological Basis ◽  
Sources Of Variation

Concentrations of Br, Mn, Na, Al, and Cl were measured in back and tail feathers and concentrations of Mg and Ca were measured in tail feathers of wild and captive Bald Eagles (Haliaeetus leucocephalus) using instrumental neutron activation analysis. Feather chemistry of four eagles sampled over 3 years showed considerable annual variation. The profiles of tail feathers, however, appeared distinct for each individual. The mineral profiles of feathers of wild nestlings were usually significantly variable among years. A sex difference was evident for Cl, and perhaps Br and Na, in back feathers of nestlings. Mn and Al concentrations were significantly influenced by the species of prey on which the eaglets had fed. Variation attributable to sex likely has a physiological basis, while much of annual variation can likely be explained by diet.

In vivo measurement of lithium in the body by a neutron activation analysis technique

1986 ◽  
Vol 13 (1) ◽  
pp. 45-49 ◽  
Author(s):  
D. Glaros ◽  
A. F. LoMonte ◽  
K. J. Ellis ◽  
S. Yasumura ◽  
R. W. Stoenner ◽  
...  
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
The Body ◽  
In Vivo Measurement ◽  
Analysis Technique

Determination of chemical elements in magnesium-based materials by neutron activation analysis

2021 ◽  
Vol 9 (1A) ◽  
Author(s):  
Caio Almeida Justino Silva ◽  
Lilian Ninoska Muriel Braguin ◽  
Jesualdo Luiz Rossi ◽  
Isolda Costa ◽  
Mitiko Saiki
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Chemical Elements

Instrumental neutron activation analysis of Marrubium vulgare L., a valuable medicinal herb

2016 ◽  
Vol 104 (4) ◽  
Author(s):  
Bouzid Nedjimi ◽  
Brahim Beladel
Keyword(s):  
Neutron Activation Analysis ◽  
Instrumental Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Chemical Elements ◽  
Medicinal Herb ◽  
Marrubium Vulgare ◽  
Instrumental Neutron Activation

AbstractTwenty two chemical elements were identified by Instrumental neutron activation analysis in

Corn Cultivation for Silage: Evaluation of Elemental Composition in the Soil and Plants by Neutron Activation Analysis

2019 ◽  
pp. 1-9
Author(s):  
Wellington Ferrari Da Silva ◽  
Maria Ângela de B. C. Menezes ◽  
Douglas José Marques
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Neutron Flux ◽  
Technology Development ◽  
Chemical Elements ◽  
Radioactive Isotopes ◽  
Flux Monitor ◽  
Agricultural Pesticides ◽  
Adequate Management

Corn cultivation for silage requires special soil management and constant applications of fertilizers and agricultural pesticides to achieve satisfactory yield levels. This study was carried out on a farm that has grown corn for several years. The soil does not have adequate management in terms of fertility and fertilization. The matrices collected were soil, roots, leaves and grains in a corn silage area to investigate which chemical elements are present and their concentrations. The neutron activation analysis (NAA) by k0-standardization method was applied on elemental concentration determination. In this technique, the sample is submitted to a neutron flux, in order to produce radioactive isotopes of the nuclei present in the original sample. In the k0 method, the sample is irradiated together with a neutron flux monitor, usually gold (Au), in the same irradiation position and standards of the interested element are not necessary. Several samples can be irradiated simultaneously when stacked inside the irradiation vessel, intercalated with neutron flux monitors. The irradiations were carried out in the TRIGA MARK I IPR-R1 research reactor at Nuclear Technology Development Centre/Brazilian Commission for Nuclear Energy (CDTN / CNEN). In the analysis, As, Ba, Br, Ca, Ce, Co, Cr, Cs, Cu, Eu, Fe, Hf, K, La, Mo, Na, Nd, Rb, Sb, Sc, Sm, Ta, Tb, Th, U, Yb and Zn were identified in the samples. Although the site studied lacks adequate management of soil fertility and fertilization, Ca, Cu, K, Mo and Zn were determined and their presences are important because they are essential for corn development. Adequate content for the cultivation of silage corn were verified by assessing these nutrients and their translocation in the plant.

scholarly journals Determination of the Elemental Composition of Aromatic Plants Cultivated Industrially in the Republic of Moldova Using Neutron Activation Analysis

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1011
Author(s):  
Alexandru Ciocarlan ◽  
Gergana Hristozova ◽  
Aculina Aricu ◽  
Ion Dragalin ◽  
Inga Zinicovscaia ◽  
...  
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Chemical Elements ◽  
Major And Trace Elements ◽  
Human Consumption ◽  
Anethum Graveolens ◽  
Transfer Coefficients ◽  
Mineral Contents ◽  
The Republic

The mineral contents of roots, leaves, stalks, and inflorescences of the aromatic plant species Anethum graveolens L., Coriandrum sativum L., Lavandula angustifolia Mill., Levisticum officinale W.D.J. Koch, and Salvia sclarea L. were studied by means of neutron activation analysis. The contents of 36 major and trace elements were determined and biological transfer coefficients were calculated. Among major and minor elements, K with a content in the range of 9230–59,600 mg/kg and Fe in the range of 69–3420 mg/kg were the most abundant elements in the studied plants. The content of the toxicant As ranged between 0.14–0.79 mg/kg; however, in the leaves (1.3 mg/kg) and inflorescences (1.0 mg/kg) of L. angustifolia there was found to be about 1 mg/kg, equal to the guideline maximal level recommended for food by the WHO. By comparing the data to Markert’s Reference Plant, “chemical fingerprints” were identified for each species. High contents of the elements Al, Hf, Se, Sc, Na, Ta, Th were determined in all studied plants. Collocated soil samples from the cultivation field were analyzed to calculate the biological accumulation coefficients for 35 of the elements determined in the plants. Considering the levels of chemical elements, the medicinal herb samples investigated are considered as relatively safe for human consumption.

scholarly journals Determination of twenty chemical element contents in normal and goitrous thyroid using X-ray fluorescent and neutron activation analysis

2021 ◽  
Vol 11 (2) ◽  
pp. 130-146
Author(s):  
Vladimir Zaichick
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Chemical Elements ◽  
Thyroid Tissue ◽  
Nodular Goiter ◽  
Tissue Samples ◽  
X Ray ◽  
Important Health ◽  
Non Destructive

Nodular goiter (NG) is an internationally important health problem. The aim of this exploratory study was to examine the content of silver (Ag), bromine (Br), calcium (Ca), chlorine (Cl), cobalt (Co), chromium (Cr), cooper (Cu), iron (Fe), mercury (Hg), iodine (I), potassium (K), magnesium (Mg), manganese (Mn), sodium (Na), rubidium (Rb), ammonium (Sb), scandium (Sc), selenium (Se), strontium (Sr), and zinc (Zn) in the normal thyroid and in the thyroid tissues with diagnosed colloid NG.. Thyroid tissue levels of twenty chemical elements (ChE) were prospectively evaluated in 46 patients with NG and 105 healthy inhabitants. Measurements were performed using non-destructive energy-dispersive X-Ray fluorescent analysis combined with instrumental neutron activation analysis with high resolution spectrometry of short– and long-lived radionuclides. Tissue samples were divided into two portions. One was used for morphological study while the other was intended for ChE analysis. It was found that during a goitrous transformation the levels of Ag, Br, Cl, Co, Cu, Fe, Hg, Mg, Na, and Sc in thyroid tissue significantly increased, whereas the levels of I and Sr decrease. It was supposed that the changes in levels Ag, Br, Cl, Co, Cu, Fe, Hg, I, Mg, Na, Sc, and Sr in thyroid tissue can be used as NG markers.

scholarly journals Assessment of Metal Pollutants Bioaccumulation in Amaranthus (Amaranthus tricolor) Vegetables in Maiduguri, Nigeria

2020 ◽  
pp. 17-24
Author(s):  
P. H. Bukar ◽  
J. A. Audu ◽  
M. U. Saidu ◽  
M. A. Onoja
Keyword(s):  
Neutron Activation Analysis ◽  
Instrumental Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Health Risk ◽  
The Body ◽  
Amaranthus Tricolor ◽  
Metal Pollutants ◽  
Farmland Soils ◽  
Safe Limit

Assessment of metal pollutants bioaccumulation in amaranthus vegetables cultivated along the bank of river Ngadda and Alau dam was carried out with the aim of establishing the health risk associated with their consumption. Samples of amaranthus vegetables were analyzed for metal pollutants namely: Aluminum (Al), Manganese (Mn), Samarium (Sm), Iron (Fe), Zinc (Zn), Cobalt (CO), Chromium (Cr), Rubidium (Rb), Barium (Ba) Scandium (Sc), Thorium (Th), Antimony (Sb) and Vanadium (V) using instrumental neutron activation analysis (INAA) techniques. Four samples from each study site were collected, analyzed for concentration values and compared with the available values of safe limit given by WHO/FAO. From the result obtained, the maximum concentrations for Al was 1508 ± 018 at sampled site A2, for Mn was 179 ± 1 at sampled site A1, for Mg was 19890 ± 537 at sampled site A3, for Fe was 655 ± 40 at sampled site A4, for Zn was  85 ± 4 at sampled site A3 for Co was 20 ± 3 at sampled site A2, for Cr was 88 ± 21 at sampled site A4, for Rb was 18 ± 1 at sampled site A4, for Sc was 15 ±1 at sampled site A4, for Th was 33 ± 5 at sampled site A4, for Sb was 18 ± 2 at sampled site A2 and for V was 2.3 ± 0.5 at sampled sites A2, A3. The result showed that the maximum concentration of Fe, Cr, Mn and Co exceed the values recommended by FAO/WHO of 425.5, 1.3, 25 and 0.3 ppm respectively. Therefore, the consumption of vegetables cultivated on farmland soils along the bank of river Ngadda and Alau dam may constitute health risk overtime as these metals can accumulate in the body.

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