Neutron Activation Analysis to Probe the Air Pollution Using Plant Biomonitoring in Egypt (original) (raw)
Related papers
Radiation Physics and Chemistry, 2001
ABSTRACT 14 MeV neutron activation analysis was used to determine air polluting elements in samples of mosses, lichens and tree barks, collected from different regions in Morocco. The analysis of spectra shows clearly that the elements Mg, Al, Si, Cl, J, Ca, Ti and Fe can easily be determined by 14 NAA with good precision, while results for Zn, Rb, Sr, Ba and La are less precise. Curves showing correlation between Al and Mg concentrations are given for different sites.
… PROJECT ON VALIDATION AND APPLICATION OF …
Due to low population density, total air pollutant emissions in Argentina are still low if compared with highly industrialised countries. Although a significant deterioration of air quality has been obsewed for a long time, air monitoring did not begin until the 90's and only in a few cities. The use of air pollution biomonitors represents an important contribution to Argentina, as measurements of air pollutants in large areas would require especial technical equipment not easily available and operated. In this project, two lichen species (Ramalina ecklonii (Spreng) Mey & Flot and Usnea amblyoclada (Müll. Rg.) Zahlbr.) and a Bromeliaceae (Tillandsia capillaris) are used as biomonitors of air pollution at a 50,000 km 2 area in Córdoba province (central Argentina). AAS andlNAA have been applied for the analysis of samples, determining As,
Ecological Chemistry and Engineering. S = Chemia i Inżynieria Ekologiczna. S
Biomonitoring of multielement atmospheric deposition using terrestrial moss is a well-established technique in Europe. In October 2006 30 moss samples of Hylocomium splendens and Pleurozium schreberi were collected around the town of Opole, capital of the agricultural Opole Region, situated between two industrial regions of Poland: the Silesia-Krakow region in the east and the Legnica-Glogow Copper Basin in the west. A total of 34 elements including a number of toxic metals and rare earths were determined by instrumental neutron activation analysis using epithermal neutrons at the IBR-2 reactor of FLNP JINR. The interpretation of the obtained results points to pronounced contamination of the sampled area with element pollutants such as As, Sb, V, Ni, Mo, etc. at levels similar to those in the neighboring industrial regions. It is an evidence of regional atmospheric transport of pollutants in addition to local pollution sources.
Analytical Letters, 2010
Neutron Activation Analysis (NAA) is a sensitive analytical technique useful for performing both qualitative and quantitative multi-element analysis of major, minor, and trace elements in samples from almost every conceivable field of scientific or technical interest. The NAA method was applied to estimate the atmospheric air quality assessment based on the analytical investigation of rainwater composition in comparison to a moss biomonitoring study performed in selected urban areas of Gdań sk, Poland, during the half-year of exposure. The main objectives of this project were: comparison of dry and alive moss abilities to bioaccumulate inorganic pollutants; and, detection and identification of natural and anthropogenic pollutant sources in this region. An impact of Gdansk Phosphatic Fertilizer Plant ''Fosfory,'' Poland, on occupational staff and citizens living near the plant has also been examined. The elements,
Journal of Atmospheric Chemistry, 2004
Data of 34 elements, including heavy metals, halogens, rare earth elements, U, and Th in 139 moss samples, collected in Central Russia in 2000-2002 in the Tver and Yaroslavl regions and in the northern part of the Moscow region, are presented. Factor analysis with VARIMAX rotation was applied to identify possible sources of the elements determined in the mosses. The seven resulting factors represent crust, vegetation and anthropogenic components. Some of the factors were interpreted as being associated with ferrous smelters (Fe, Zn, Sb, Ta); combination of non-ferrous smelters and other industries (Mn, Co, Mo, Cr, Ni, W); an oil-refining plant, and oil combustion at the thermal power plant (V, Ni). The geographical distribution patterns of the factor scores are also presented. Dependency equations of elemental content in mosses versus distance from the source were derived.
Asia-Pacific Journal of Atmospheric Sciences, 2018
Atmospheric deposition of trace elements in three cities of Vietnam including Hue, Hoi An and Ho Chi Minh in Central and South of Vietnam has been studied in this work by moss technique. Thirty samples of the local moss Barbula indica were collected in these cities and the concentrations of thirty heavy elements were determined by neutron activation analysis at the reactor IBR-2 of the Frank Laboratory of Neutron Physics of the Joint Institute for Nuclear Research located in Dubna, Russia. Concentrations of thirty elements were determined in each sample. Factor analysis has been applied to the concentration data and five main factors, which characterized five possible sources of the air pollution affecting the investigated areas have been identified. The correspondence between the research results and the reality of the air pollution in the studied sites has proved high possibility of the method for studying air pollution in Vietnam.