As part of the casting process, foundries create sand molds and cores to hold the molten metal to specific dimensional tolerances. Although most of the waste foundry sands (WFSs) from this process are land filled, there is great interest in diverting them for use in agricultural and geotechnical applications. One potential limitation to their beneficial use is concern that the WFSs will leach h...

The micro-EDXRF (energy dispersive X-ray fluorescence) method was applied to the screening of Pb in micrometer-area samples, such as a Cu contact in electrical components that had been coated by Pb-free Sn-Ag-Cu solder. The reliability of the screening method was evaluated by a comparison with a scanning electron microscope (SEM) observation and a precious chemical analysis method of inductivel...

 In a complementary field study, the concentrations of some metals (Cu, Ag, Pb, Zn, Ni, Co, Mn, Fe, As, Cd, Cr, Mg and Ba) were measured in clam Solen dactylus, sediments and water collected at two stations (Park-e-Qadir, 56° 20/ E, 27° 11/ and Nakhl-e-Nakhoda, 56° 23/ E, 27° 10/ N) of Bandar Abbas coastal waters of the Persian Gulf in November 2008 and February 2009 showing different contamina...

Reference values for 26 elements, namely Al, Ba, Be, Bi, Ca, Cd, Co, Cr, Cu, Fe, Hg, Li, Mg, Mn, Mo, Ni, Pb, Sb, Si, Sn, Sr, Tl, V, W, Zn and Zr are proposed in serum and blood of 110 healthy adults of the urban area of Rome. They were included in the study on the basis of strict criteria of eligibility and exclusion. With the exception of Ba, Bi, Co, Cr, Ni, Sb, Sn Tl in serum, and Bi, Hg, Si,...

Groundwater samples were collected from wells in Cross River State (Nigeria) and analysed for trace elements including Ba, Co, Cr, Cu, Fe, Li, Mn, Mo, Ni, Pb, Rb, Sr and Zn. The primary aim of the study was to determine the baseline concentrations of these metals, while the secondary aim was to assess the present level of pollution, as a basis for future impact of human and industrial activitie...

Waste molding and core sands from the foundry industry are successfully being used around the world in geotechnical and soil-related applications. Although waste foundry sands (WFSs) are generally not hazardous in nature, relevant data is currently not available in Argentina. This study aimed to quantify metals in waste molding and core sands from foundries using a variety of metal-binder combi...

Teeth are good indicators of environmental exposure to heavy metals and of nutritional status. Inductively coupled plasma-mass spectrometry (ICP-MS) was used to compare the content of trace elements in primary and permanent teeth. For this purpose, primary teeth were collected from 64 children and 112 permanent teeth were collected from 40to 60-year-old adults. The data were assessed statistica...

Abstract The impact of Ba-modified peanut shell biochar (Ba-PSB) on Pb(II) removal was studied and BaCl2 used as a modifier. It shown that the PSB obtained at 750 °C had best adsorption effect, Ba-PSB larger specific surface area good effect Pb(II). At pH = 5, concentration 400 mg/L, time 14 h, temperature 55 °C, loading amount black (BPSB), red (RPSB), Ba-BPSB, Ba-RPSB reached 128.050, 98.217,...

taknar polymetal (cu-zn-au-ag-pb) deposit: a new type magnetite-rich vms deposit, northeast of iran