scholarly journals EVALUATION OF BIOLOGICAL ABSORPTION COEFFICIENT OF TRACE ELEMENTS IN PLANTS FROM THE PITINGA MINE DISTRICT, AMAZONIAN REGION

2014 ◽  
Vol 35 (1) ◽  
Author(s):  
Maria do Carmo Lima e Cunha ◽  
Lauro Valentim Stoll Nardi ◽  
Vitor Paulo Pereira ◽  
Artur Cezar Bastos Neto ◽  
Luiz Alberto Vedana
Keyword(s):  
Trace Elements ◽  
Absorption Coefficient ◽  
Biological Absorption Coefficient ◽  
Amazonian Region

Correlations between the elemental composition of grapes, soils of the viticultural area and wine

2021 ◽  
Vol 87 (11) ◽  
pp. 11-18
Author(s):  
Z. A. Temerdashev ◽  
A. G. Abakumov ◽  
A. A. Khalafyan ◽  
N. M. Ageeva
Keyword(s):  
Absorption Coefficient ◽  
Elemental Composition ◽  
Inductively Coupled Plasma ◽  
Statistical Modelling ◽  
Atomic Emission ◽  
Emission Spectrometry ◽  
Grape Variety ◽  
Plasma Atomic Emission Spectrometry ◽  
Mobile Forms ◽  
Biological Absorption Coefficient

Study of the elemental composition of the soil-grape-wine chain and correlation relationships between the chain links is presented. The objects of the study were grapes of the Muscat, Cabernet and Merlot varieties, wine samples produced from them and soils of the viticultural areas. Concentrations of Li, Mg, Al, K, Ca, V, Mn, Fe, Ni, Co, Cu, Zn, Rb, Cd, Pb, Ba, Na, Ti and Sr in soils, grapes and wines were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). Relationships between the elemental composition of the objects under study were assessed by statistical modelling using the STATISTICA software. The character of metal distribution in the soil-grape chain was studied for three forms of the element extraction from soils. We determined their gross content, the content of acid-soluble and mobile forms. The degree of absorption of mobile forms of metals by grapes was estimated using «biological absorption coefficient»., Values of the biological absorption coefficient (BAC) of different metals depend on the grape variety. High BAC values are observed for Rb, Ti, Mg, Zn, Cu, Na, Fe, Al, and Sr in Merlot grapes; K, Pbm and Ni in Muscat; and for V and Mn in Cabernet. The lowest BAC values were observed for Co, Ba, and Ca in all grape varieties under study. Each grape variety formed its own individual elemental image due to the different nature of absorption of the studied metals. The transfer of metals from grape to wine for all considered varieties was accompanied by a decrease in the concentrations of Mg, Al, K, Ca, Mn, Ni, Cu, Zn, Rb, Ba, Ti, and Sr and by an increase in the content of V, Fe, Co, Pb, and Na. Discriminant analysis revealed the metals with the highest identification properties, considering their form present in the soil. The results obtained can be used when setting markers determining the varietal and regional origin of wines.

scholarly journals Soil and Leaf Mineral Element Contents in Mediterranean Vineyards: Bioaccumulation and Potential Soil Pollution

2022 ◽  
Vol 233 (1) ◽  
Author(s):  
R. Jiménez-Ballesta ◽  
S. Bravo ◽  
J. A. Amorós ◽  
C. Pérez-de-los-Reyes ◽  
J. García-Pradas ◽  
...  
Keyword(s):  
Trace Elements ◽  
Absorption Capacity ◽  
Anthropogenic Contamination ◽  
Central Spain ◽  
Potential Toxicity ◽  
X Ray ◽  
La Mancha ◽  
Biological Absorption Coefficient ◽  
Vineyard Soils ◽  
High Concentrations

Abstract The study reported here concerns the geochemical distributions of macro- and trace elements (including potentially toxic elements, PTEs) in the vineyard soils of Alcubillas, which is one of the oldest, albeit not world-renowned, wine-growing areas in La Mancha (Central Spain). Soil and leaf samples were analyzed by X-ray fluorescence spectrometry to ascertain the levels of various elements in the soil and the plant. The potential toxicity of the elements was assessed with regard to the development of the vineyard. Despite the fact that fertilizers and pesticides are employed in the vineyards in this area, the results showed that the levels of trace elements in the soil samples did not exceed the reference values according the pedogeochemical values for the region and Spain. This finding suggests that the study area is not polluted, and therefore, there are hardly any traces of anthropogenic contamination. The Biological Absorption Coefficient (BAC) was calculated to assess the assimilation of various elements from the soil to the leaves, and differences were found in the element absorption capacity of the vines. Some elements were not taken up by Vitis vinifera despite elements like Zr and Rb being present in relatively high concentrations in the soil. The production in these soils does not represent a threat to human health or the ecosystem, because the farmers in this area are extremely careful to preserve the environment and they only farm to achieve moderate yields of grapes per hectare.

scholarly journals Analysis of Heavy Metals Accumulation in Vegetation (as exemplified in Vladimir region)

10.12737/317 ◽  
2013 ◽  
Vol 2 (2) ◽  
pp. 15-20
Author(s):  
Самылина ◽  
E. Samylina ◽  
Бирюков ◽  
I. Biryukov
Keyword(s):  
Heavy Metals ◽  
Absorption Coefficient ◽  
Hypogymnia Physodes ◽  
Environment Monitoring ◽  
Natural Sources ◽  
Heavy Metals Accumulation ◽  
Central Russia ◽  
Vladimir Region ◽  
Biological Absorption Coefficient ◽  
Metals Accumulation

This paper is devoted to research of heavy metals accumulation by vegetation in Vladimir region (central Russia). The biological absorption coefficient was used for assessment of cumulative ability related to various heavy metals with regard to Picea abies, Vaccinium myrtillus, Hypogymnia physodes. Possible ways of heavy metals migration in the ecosystem, as well as their possible anthropogenic and natural sources have been considered. The special attention is directed on successful application of plants in environment monitoring.

Study on the Phytoavailability of Heavy Metal Lead, Copper, Zinc in Ilex Kudingcha C. J. Tseng Soil

2013 ◽  
Vol 807-809 ◽  
pp. 144-148
Author(s):  
Yang Yang He ◽  
Sheng Xu Luo ◽  
Hui Yan ◽  
Yu Jie Xiao ◽  
Yang Yu
Keyword(s):  
Heavy Metal ◽  
Absorption Coefficient ◽  
Extraction Method ◽  
Strong Absorption ◽  
Pot Experiment ◽  
Characterization Methods ◽  
Single Extraction ◽  
Copper Solution ◽  
Biological Absorption Coefficient ◽  
Copper Zinc

Pot experiment was conducted with the cutting seedlings of Ilex kudingcha C. J. Tseng. By adding lead, copper solution and self-exist zinc in soil, we conducted the research for the phytoavailability of heavy metal in the different soil situation. The characterization methods of the phytoavailability were investigated. Results show that lead, copper and zinc are the strong absorption elements from BAC (Biological Absorption Coefficient) averages of 13 groups experiment. The order of BAC averages is lead > copper > zinc. 0.05mol/L EDTA-2Na can be used as the extracting agent of lead or copper, 0.1mol/L HCl can be used as the extracting agent of zinc. They can be used for the characterization methods about the phytoavailability of lead, copper, zinc in soil by the single extraction method. 0.1mol/L HC1 is adopted to extract soil, and weighted ion impulse of the lead, copper, zinc in the extraction fluid is calculated, which can well simultaneously characterize the phytoavailability of heavy metal lead, copper, zinc in kudingcha soil.

scholarly journals Agropyron cristatum (L.) Beauv. as a possible indicator of heavy metal contamination

2020 ◽  
Vol 9 (2) ◽  
pp. 60-66
Author(s):  
Yuliya M. Kanibolotskaya ◽  
Yelena F. Krasnopyorova ◽  
Ainagul B. Kalieva ◽  
Sholpan M. Zhumadina
Keyword(s):  
Absorption Coefficient ◽  
Heavy Metal Contamination ◽  
Negative Impact ◽  
Active Species ◽  
Agropyron Cristatum ◽  
Anthropogenic Factors ◽  
Industrial Enterprises ◽  
Biological Absorption Coefficient ◽  
Research Goal ◽  
State Of The Environment

Due to the increasing negative impact of anthropogenic factors on the state of the environment in man-made regions, the possibility of using Agropyron cristatum (L.) Beauv. to detect contamination of industrial areas Ti, Mn, Cr, Fe, Ni, Cu, Zn, Pb, Sr is being considered. To achieve the research goal the authors have analyzed the content of these metals in vegetable (A. cristatum) and soil samples, taken in the suburbs of Pavlodar (the Pavlodar Region, Kazakhstan) at various distances from the operating industrial enterprises with application of the standard techniques. Geobotanic studies have been carried out using classical methods. Agropyron cristatum, being a digressive-active species, under human-induced conditions mostly becomes a dominant or subdominant in plant communities, including areas where it has historically been represented in little abundance. The underground organs of A. cristatum are characterized by high values of Zn biological absorption coefficient at most points; very high values of АCr and АPb at multiple points. For the above-ground organs of A. cristatum, Zn biological absorption coefficient is also quite high; it is appreciably lower for Mn, but higher than for Ni, Cu, Sr, Ti and Fe. A. cristatum can be used as an indicator of environmental pollution by Zn, Cr, Pb and Mn for the area under investigation and in similar conditions for other regions, especially those in the area of metallurgical enterprises.

Is there a “universal” MAC equation?

1990 ◽  
Vol 48 (2) ◽  
pp. 228-229
Author(s):  
Robert E. Ogilvie
Keyword(s):  
Absorption Coefficient ◽  
Atomic Absorption ◽  
Atomic Number ◽  
X Ray ◽  
Time Period ◽  
Image Position

The search for an empirical absorption equation begins with the work of Siegbahn (1) in 1914. At that time Siegbahn showed that the value of (μ/ρ) for a given element could be expressed as a function of the wavelength (λ) of the x-ray photon by the following equationwhere C is a constant for a given material, which will have sudden jumps in value at critial absorption limits. Siegbahn found that n varied from 2.66 to 2.71 for various solids, and from 2.66 to 2.94 for various gases.Bragg and Pierce (2) , at this same time period, showed that their results on materials ranging from Al(13) to Au(79) could be represented by the followingwhere μa is the atomic absorption coefficient, Z the atomic number. Today equation (2) is known as the “Bragg-Pierce” Law. The exponent of 5/2(n) was questioned by many investigators, and that n should be closer to 3. The work of Wingardh (3) showed that the exponent of Z should be much lower, p = 2.95, however, this is much lower than that found by most investigators.

Microanalytical Identification of a New Zr-Nb-Fe Phase

1990 ◽  
Vol 48 (2) ◽  
pp. 132-133
Author(s):  
O.T. Woo ◽  
G.J.C. Carpenter
Keyword(s):  
Trace Elements ◽  
Cold Rolling ◽  
Proportionality Factor ◽  
Tube Material ◽  
X Ray ◽  
Metal Foils ◽  
Arc Melting ◽  
Intermetallic Particles ◽  
Intermetallic Precipitates ◽  
Cold Worked

To study the influence of trace elements on the corrosion and hydrogen ingress in Zr-2.5 Nb pressure tube material, buttons of this alloy containing up to 0.83 at% Fe were made by arc-melting. The buttons were then annealed at 973 K for three days, furnace cooled, followed by ≈80% cold-rolling. The microstructure of cold-worked Zr-2.5 at% Nb-0.83 at% Fe (Fig. 1) contained both β-Zr and intermetallic precipitates in the α-Zr grains. The particles were 0.1 to 0.7 μm in size, with shapes ranging from spherical to ellipsoidal and often contained faults. β-Zr appeared either roughly spherical or as irregular elongated patches, often extending to several micrometres.The composition of the intermetallic particles seen in Fig. 1 was determined using Van Cappellen’s extrapolation technique for energy dispersive X-ray analysis of thin metal foils. The method was employed to avoid corrections for absorption and fluorescence via the Cliff-Lorimer equation: CA/CB = kAB · IA/IB, where CA and CB are the concentrations by weight of the elements A and B, and IA and IB are the X-ray intensities; kAB is a proportionality factor.

XRMF applications of a monolithic, polycapillary, focusing x-ray optic

1996 ◽  
Vol 54 ◽  
pp. 240-241
Author(s):  
D. A. Carpenter ◽  
Ning Gao ◽  
G. J. Havrilla
Keyword(s):  
Trace Elements ◽  
Point Source ◽  
Focal Spot ◽  
Fluorescence Analysis ◽  
X Rays ◽  
Focal Distance ◽  
Spot Diameter ◽  
X Ray ◽  
Focal Spot Diameter

A monolithic, polycapillary, x-ray optic was adapted to a laboratory-based x-ray microprobe to evaluate the potential of the optic for x-ray micro fluorescence analysis. The polycapillary was capable of collecting x-rays over a 6 degree angle from a point source and focusing them to a spot approximately 40 µm diameter. The high intensities expected from this capillary should be useful for determining and mapping minor to trace elements in materials. Fig. 1 shows a sketch of the capillary with important dimensions.The microprobe had previously been used with straight and with tapered monocapillaries. Alignment of the monocapillaries with the focal spot was accomplished by electromagnetically scanning the focal spot over the beveled anode. With the polycapillary it was also necessary to manually adjust the distance between the focal spot and the polycapillary.The focal distance and focal spot diameter of the polycapillary were determined from a series of edge scans.

Trace Elements and Iron in Human Metabolism

1979 ◽  
Vol 7 (6) ◽  
pp. 1330-1331
Author(s):  
E. D. WILLS
Keyword(s):  
Trace Elements ◽  
Human Metabolism

Meat and Meat Products Consumption in Italy: Contribution to Trace Elements, Heme Iron and selected B Vitamins supply

2004 ◽  
Vol 74 (4) ◽  
pp. 247-251 ◽  
Author(s):  
Lombardi-Boccia ◽  
Lanzi ◽  
Lucarini ◽  
Di Lullo
Keyword(s):  
Trace Elements ◽  
Daily Intake ◽  
Meat Products ◽  
Heme Iron ◽  
B Vitamins ◽  
Zinc Intake ◽  
Consumption Frequency ◽  
Iron And Zinc ◽  
Iron Heme ◽  
Daily Intakes

This study was undertaken to estimate the contribution of meat and meat products consumption to the daily intakes of trace elements (Fe, Zn, Cu, Se), heme iron, and selected B vitamins (thiamine, riboflavin, niacin) in Italy. Meat and meat products were selected on the basis of their consumption frequency reported by the most recent nationwide dietary individual survey carried out in Italy (INN-CA study). The daily intakes of total iron and heme iron were 1.65 and 1.13 mg/person/day. Zinc intake was 3.65 mg/person/day. Beef made the main contribution to iron, heme iron, and zinc daily intakes. Copper daily intake was 107.3 mug/person/day, with meat products provided the highest contribution (40 mug/person/day). Daily intake of selenium (7.14 mug/person/day) was provided mainly by poultry consumption. Thiamine intake was 228 mug/person/day, and meat products were the main source (110 mug/person/day). Riboflavin intake was 136 mug/person/day, with both beef and meat products as the main contributors (40 mug/person/day). Niacin intake was 7.53 mg/person/day, and poultry was the main source (2.28 mg/person/day). Meat and meat products were a valuable source of micronutrients, supplying 47, 48, and 24% of zinc, niacin, and thiamin daily requirements, respectively, and over 10% of iron, copper, selenium, and riboflavin daily average requirement values of the italian RDAs calculated for the population involved in the survey (INN-CA study).

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