Abstract In the present paper, authors attempt to explain importance of pH in soil environment studies and show what mistakes avoid when measuring interpreting results obtained. The tests conducted (i.e., extraction aqua regia , buffer capacity determination, impact acidification on amount heavy metals extracted from soils) demonstrated how pollution affect pace extracting cadmium (Cd), lead (Pb) zinc (Zn) cations heavily polluted unpolluted soils following gradual acidification. It was...

This study proposes using the network of urban gardens to grow vegetables and monitor air quality, it also evaluates whether food grown on a clean substrate in an environment is safe for consumption. For this purpose, lettuces were exposed different degrees pollution five locations city Copenhagen, plus reference site. Six specimens placed at each site and, after exposure period, half sample was washed. Subsamples then digested by total extraction method bioaccessible method, concentration...

Abstract The authors discuss the geochemical behavior of arsenic (As), antimony (Sb), and selenium (Se) in urban gardens human health implications associated with agriculture. A total 42 samples from 7 Madrid, Spain, were collected top 20 cm soil. Concentrations As, Sb, Se main soil properties (i.e., iron, pH, texture, calcium carbonate, organic matter) determined. significant correlation was found between As Sb indicating possibility surface adsorption or ligand exchange carbonate group....

The radon-deficit technique has proven to be a valuable tool for environmental site characterization, particularly in detecting subsurface organic contamination. This work highlights its successful application two contaminated sites, validated by consulting firms and supported independent data collection campaigns. In the first case study, effectively identified previously undetected DNAPL (Dense Non-Aqueous Phase Liquid) accumulations optimized placement of monitoring wells. Similarly,...

Abstract This study applies a Screening-Level Ecological Risk Assessment (SLERA) to evaluate the potential impact of trace elements on vegetation in an abandoned As–Cu mining area northern Spain. A total 27 soil samples were analyzed for pseudo-total ( aqua regia ) and phyto-available (EDTA 0.05 M) content As, Cd, Co, Cr, Cu, Ni, Pb Zn. Contamination ecotoxicological risk indices used identify pollution hotspots contaminants ecological concern (COPEC). Arsenic, Co Zn pose across site....

This study explores the feasibility of using transmission tomographic images based on attenuation measures in to detect and estimate most common materials that are embedded concrete, reinforcements natural artificial voids. A limited set concrete specimens have been made which cylindrical objects such as bars/tubes steel, PVC aluminium analyse effect size material. The methodology scope this is presented numerical simulations carried out optimize emitter-receiver configuration understand...

A blind field test with 136 independent measurements of radon (222Rn) in soil air retrieved from a depth 0.8 m decommissioned lindane (γ-hexachlorocyclohexane) production plant was undertaken to evaluate the performance 222Rn-deficit technique as screening methodology for location and delineation subsurface accumulations complex mixtures organic contaminants. Maps 222Rn iso-concentrations were drawn interpreted before direct analytical information regarding concentrations...

The performance of the radon (222Rn)-deficit technique has been evaluated at a site in which complex DNAPL mixture (mostly hexachlorocyclohexanes and chlorobenzenes) contaminated all four layers (from top to bottom: anthropic backfill, silt, gravel marl) soil profile. Soil gas samples were collected two depths (0.8 m 1.7 m) seven field campaigns total 186 222Rn measurements performed with pulse ionization detector. A statistical assessment influence parameters on results revealed that...

The occurrence of a total eclipse at Tartagal, Argentina, on November 12, 1966, prompted rocket sounding experiment to determine temperature, wind, and ozone perturbations in the stratosphere caused by eclipse. Soundings were made 65- 30-km region atmosphere before, during, after Twelve rockets successfully fired; nine instruments designed measure temperature three concentration atmosphere. Wind speed was determined for each from trajectory radar-reflective parachute.

This study evaluates the results of characterization air pollution in urban green areas using edible plants. To this purpose, we examined effect location (i.e., three different levels pollution), substrate (peat moss and vermiculite), plant species (oilseed rape [ L.] kale L.]) on accumulation trace elements leaves. A total 36 samples unwashed leaves were digested with HNO-HO analyzed for 27 by inductively coupled plasma mass spectrometry. Considering location, plants exposed next to road...

Abstract Human Health Risk Assessment (HHRA) is a widely applied method to make decisions about the environmental status of sites affected by toxic substances. Its conclusions are variability and uncertainty input variables in HHRA model. The aim this work apply an algorithm based on 2D Monte Carlo simulations integrate exposure factors, concentration, bioaccessibility, reported various information sources, assess compare their influence risk outcome. specific case study children arsenic...

The radon-deficit technique is a powerful tool to detect and delineate sub-surface accumulations of organic contaminants. Field measurements 222Rn in soil air, however, are affected by several confounding factors that can lead the misinterpretation results. Among most influential are: vertical lateral changes lithology, fluctuating contaminant saturations with depth, varying water saturation ratios along profile atmospheric (and, therefore, soil) thermal oscillations. To evaluate minimize...

An openly accessible cellular automaton has been developed to predict the preferential migration pathways of contaminants by surface runoff in abandoned mining areas. The site where validation results Contaminant Mass Transfer Cellular Automaton (CMTCA) carried out is situated on steep flank a valley Spanish northwestern region Asturias, at foot which there village with 400 inhabitants, bordered stream that flows into larger river just outside village. Soil samples were collected from mine...

Students start university with a high heterogeneity, both in knowledge and abilities to cope the different subjects. Traditional teaching methods are based on unidirectional transmission of knowledge, from teachers students, causing problems when aforementioned heterogeneity is high. Some new try homogenize students before course. As an innovative approach, this study tries use improve final learning. Continuous assessment, collective intelligence web 2.0 have been applied encourage...

F. Barrio-ParraM. Izquierdo-DíazD. BolonioY. Sánchez-PalenciaL.J. Fernández-Gutiérrez Del ÁlamoL.F. Mazadiego