Cesium is the heaviest stable alkali metal (with only one isotope – 133Cs) and it occurs mainly as a potassium-substituting cation. It an important trace element in rocks typical for Earth crust, its content biomass also relatively high compared to those abiogenic elements which are little soluble. Low-cost analytical methods like X-Ray Fluorescence inadequate quantify cesium natural samples, s...

The atmospheric particulate matter of industrialised cities have become a mixture of potentially basic substances whose concentration have to be monitored to assess the pollution levels. Anthropogenic elements, particularly trace metal, are part of these pollutants and the knowledge of their total concentration in the air is necessary to evaluate the pollution risk in term of maximum levels and...

The application of comparator instrumental neutron activation analysis (INAA) combined with the internal standard method was considered to analyze solid volumetric samples different rocks, 15–20 g mass, for Au content. Fe used as its mass fraction determined by X-ray fluorescence (XRF) help a laboratory energy dispersive XRF spectrometer RLP-21T, Kazakhstan. puck-like about 29 mm across diamete...

The paper looked at the sources and levels of concentration of metal pollutants in Kubanni dam, Zaria, Nigeria. The main sources of data for the study were sediment from four different sections of the long profile of the dam. The samples were prepared in the laboratory according to standard methods and the instrumental Neutron Activation Analysis (INAA) technique was adopted in the analysis usi...

Abstract Inland water resources on Rote Island are more than 80 lakes and ponds. One of them is Dead Sea Lake Oemasapoka. Based previous research, this lake showed its uniqueness in high salinity values (40 - 42 ppt). The purpose study was to reveal heavy metal concentrations. We conducted an analysis parameters using neutron activation analysis. Sample irradiation carried out the Rabbit system...

Lisbon is the largest urban area in the Western European coast. Due to this geographical position the Atlantic Ocean serves as an important source of particles and plays an important role in many atmospheric processes. The main objectives of this study were to (1) perform a chemical characterization of particulate matter (PM2.5) sampled in Lisbon, (2) identify the main sources of particles, (3)...

Forty two male Wistar rats were exposed to manual metal arc (MMA) stainless steel (SS) welding fumes generated by an automatic welding device for "nose-only" exposure. The exposure simulated an actual MMA/SS welding environment as closely as possible. For the retention study, the duration of exposure was one hour per workday for one, two, three, of four weeks and for the clearance study four we...