Pb Analysis Articles & Analysis
12 articles found
This paper evaluates the performance of ATONA amplifiers on the Phoenix TIMS at Princeton University and gauges their suitability for U-Pb geochronology. The authors describe the limitations of the current technique, i.e. the use of a single ion counter requiring peak-hopping routines with subsequent analysis times of 2-5 hours per sample. ...
In this study, the quality of collected rainwater at a downtown middle school rainwater harvesting system was evaluated by measuring physical, chemical, and microbiological parameters such as pH, dissolved oxygen (DO), chemical oxygen demand (COD), total nitrogen (TN), total phosphorus (TP), NO3, PO4, total coliform (TC), Escherichia coli , and some metals (i.e. Al, Cr, Mn, Zn, Cu, As, Cd, ...
Based on exegy analysis, PB is found to be the best fuel with highest exergetic efficiencies 26.02%. However, PD evolves to be best fuel based on economic analysis with its cost rate of product as 0.025 rupees/s. This invites application of thermoeconomic analysis for better justification on selection of the fuel. The ...
The edible clam Venerupis decussata is widely distributed in European aquatic systems, some of them under strong anthropogenic pressure, which can contribute to trophic transfer of xenobiotics to humans. Taking into account this rationale, the present study focused on the tolerance, bioconcentration and bio chemical responses of V. decussata when submitted to ecologically relevant ...
The result of enrichment factors indicated that crustal elements such as Fe, Al, Mn and Cr were originated from the soil dust while Cd, Zn and Pb had significant anthropogenic sources. Factor analysis results suggest that Al, Mn and Fe were predominantly of crustal origin, whereas Cd, Cr, Zn and Pb had important non–crustal sources.Keywords: dry ...
The results of the analyses show that water samples were slightly alkaline to neutral pH. The average concentrations of Pb in all samples for the post-monsoon season were above the WHO's guideline for drinking water. For both seasons, arsenic levels exceeded the drinking water standard in 25% of groundwater samples and lead (Pb) levels exceeded in about 60% ...
X-ray fluorescence analysis can be used to quickly and easily analyze samples in solid, powder, and liquid states nondestructively, and is therefore widely used as a screening technique for compliance with the RoHS/ELV directives. ...
Local blockage is one of the possible severe accidents which may occur in lead (Pb)- or lead-bismuth (Pb-Bi)-cooled fast reactors due to their high melting temperature. ...
Bioaccumulation of the metals by bacteria showed the following trend > Fe >Zn >As > Pb > Mn (Rainy Season) and Zn > Fe > Mn > As > Hg > Pb (Dry season). Statistical analysis using of variance (ANOVA) showed significant differences in concentrations of Pb, Hg, Fe, Zn, As, and Mn level between the sampling zones at Eziama River. ...
Attention to heavy metal contamination associated with highways or motorways has risen in the last decades because of the associated health hazards and risks. The present study analysed the metal content in soil samples of one of the main highways along the western part of the Jordanian border, the North Shuna–Dead Sea–Aqaba Highway. The metals analysed were Pb, Zn, Cd, Co and Ni. In the samples ...
Ambient particulate measurements were carried out using TE-PUF sampling and a Universal Air Sampler between 8 March and 25 April 2001 at Taichung. Samples were collected every 6 hours beginning at 0100 LST (Local Standard Time) each day at two sites, one at a university campus and the other at a roadside. Chemical species (Cl-, NO3-, SO42-, Na+, NH4+, K+, Mg2+, Ca2+, Fe, Zn, Pb, Ni) were analysed ...
Measured water parameters were temperature, pH, conductivity, BOD, HCO3-, Ca2+, Mg2+, Cl-, SO42-, PO43-, NO3-, NH3, Fe, Mn, Zn, Pb, and Cd. Statistical analysis of the data revealed significant differences in water quality. ...