soil analyzer Articles
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Enrichment of 210Po and 210Pb in the Padubidri environs of Karnataka
The activity concentrations of natural radionuclides, viz 210Po and 210Pb, in soil samples of Padubidri in the coastal Karnataka, the site for the proposed coal-based thermal power station, were measured using a ZnS (Ag) alpha counting system to establish baseline data on radioactivity levels in the environment of the region. Soil samples were collected at different sampling stations and analysed ...
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How good is GLASOD?
The Global Assessment of Soil Degradation (GLASOD), commissioned 20 years ago by the UN Environment Program (Oldeman et al., 1991), collated expert judgments of many soil scientists to produce a world map of human-induced soil degradation. It has been an important source for national and international environmental policy decisions but has been criticized on the grounds that its qualitative ...
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Assessment of cement’s dust impact on the soil using principal component analysis and GIS
To evaluate the impact of the cement’s dust emitted by the eastern Moroccan cement factory (Oujda Holcim) and deposited on the soil of the Ain Lahjar commune, 58 samples of soil were collected around the factory on a radius of 3 km approximately. The physicochemical analyses of the upper 3 cm of the soil surface samples correspond to the pH, electrical conductivity, the chlorides and the oxides ...
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The geostatistical reassessment of soil contamination with lead in metropolitan Warsaw and its vicinity
Soils of urban agglomerations are often exposed to pollution with lead, which high concentrations are frequently observed. The main sources of lead contamination are airborne particulate depositions and exhaust fumes. The study area encompassed Warsaw city, outskirts and fragments of Kampinoski National and Mazowiecki Landscape Parks. The scope of the study was to analyse the spatial distribution ...
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Prominent role for Eijkelkamp Penetrologger in Dutch compaction research - Case Study
During a large-scale research project in the 1990s, Wageningen University & Research (WUR) investigated the presence of organic matter in Dutch soil. Soil samples were taken at no fewer than 1,400 locations. A follow-up study was conducted in late 2018, and the 1,400 locations were revisited. This time not just to measure organic matter but also the penetration resistance. With further ...
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Dynamic Soil Structure Interaction Analyses of North Shore Pump Station - Case Study
Project Description Located near Fisherman’s Wharf in San Francisco, North Shore Pump Station is a part of the North Point Wet-Weather Facility (NPF), which provides primary treatment for disinfection of wastewater. The facility is a two-story building that is completely embedded in soil, and the subsurface conditions include potentially liquefiable sand layers and soft Bay Mud deposits ...
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Flash flooding prediction in regions of northern Vietnam using the KINEROS2 model
Flash flooding (FF) in Vietnam has become an important issue due to increasing loss of property and life. This paper investigates FF prediction using the Kinematic Run-off and Erosion model to perform comprehensive analyses to: (1) evaluate the role of initial soil moisture (θ) conditions using the Bridging Event and Continuous Hydrological model; (2) model the discharge (Q) using different ...
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Warming and drought alter soil phosphatase activity and soil P availability in a Mediterranean shrubland
Abstract We conducted a field experiment simulating the warming and drought in a Mediterranean shrubland dominated by Erica multiflora and Globularia alypum with the aim to simulate the next future climate conditions predicted by the IPCC and ecophysiological models. As P is frequently a limiting nutrient in Mediterranean ecosystems, we investigated the drought and warming effects on soil ...
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Fractionation of uranium and other trace elements in soil samples collected in selected regions of the Republic of Kazakhstan
To determine the specific chemical forms of trace elements and to study of their mobility/availability in soil, samples collected in the Republic of Kazakhstan were analysed using the revised BCR protocol. A study was made with dependence of the mobility of different elements of interest on digestion procedures for collected soil samples and Standard Reference Material. The concentrations of the ...
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Soil geography and geostatistics
Geostatistics, which can be defined as the tools for studying and predicting the spatial structure of georeferenced variables, have been mainly used in soil science during the past two decades. Since now, hundreds of geostatistical papers have been published on soil science issues. The use of geostatistical tools in soil science is diverse and extensive. It can be for studying and predicting soil ...
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Soil and groundwater assessment, south-east England
Project Remediation Strategies were appointed to undertake a soil and groundwater assessment to assist a client in understanding the potential environmental liabilities associated with the shallow soils beneath part of the site. The client was undertaking a phased renewal of the site tank farm areas, which required the excavation and replacement of shallow soils to allow for new bund ...
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Wastewater reuse for irrigation and seawater intrusion: evaluation of salinity effects on soils in Cyprus
Climate change and the continuous population growth increase the demand for water, which in arid and semiarid regions, like the Mediterranean, is considered a limited resource. Future demands will not be met by traditional water resources like surface and groundwater. In order to handle increased water demand, the treated wastewater originating from municipal wastewater treatment plants is ...
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Determination of the feasibility of using a portable x-ray fluorescence (XFR) analyzer in the field for measurement of lead content of sieved soil
Soil samples collected in housing areas with potential lead contamination generally are analyzed with flame atomic absorption spectrometry (FAAS) or other laboratory methods. Previous work indicates that field-portable X-ray fluorescence (XRF) analysis is capable of detecting soil lead levels comparable to those detected by FAAS in samples sieved to less than 125 μm in a laboratory. A ...
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Assessment of Zn, Cu, Pb and Ni contamination in wetland soils and plants in the lake basin
The impact of waste disposal on trace metal contamination was investigated in eleven wetlands in the Lake Victoria Basin. Samples of soil, water and plants were analysed for total Zn, Cu, Pb and Ni concentrations using flame atomic absorption spectrophotometry. The trace metal concentrations in soil were the highest in Katanga wetland with the highest mean concentrations of 387.5±86.5 mg/kg Zn, ...
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Laboratory and Field Calibration of a Neutron Depth Moisture Gauge for Use in High Water Content Soils
In recent years radioisotopes have been increasingly used for determining site values of the density and the water content of soils. Since field measurements obtained by neutron moisture gauges are relative, these instruments must be calibrated. Calibration is usually carried out in the laboratory by plotting neutron counting rates versus known water content values of several soil media, ...
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Monitoring flow of Oude Rijn River after crane accident Alphen aan den Rijn - Case Study
Project Monitoring flow of Oude Rijn River after crane accident Alphen aan den Rijn Client Rijnland District Water Control Board Country The Netherlands Background information constructing monitoring network On the 3rd of August 2015 a new bridge was supposed to be build across the Oude Rijn River in Alphen aan den Rijn, the Netherlands. Instead, a massive accident occurred when two ...
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A method for measuring saturated hydraulic conductivity in Anisotropic soils
Saturated hydraulic conductivity (Ks) is an important soil parameter that is difficult to measure, especially in an anisotropic medium. Many methods for determining Ks have been developed over time, but taking different water flow directions into consideration is possible in only a few of them; furthermore, these few methods cannot be universally applied. The method proposed here allows Ks to be ...
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In-situ moisture content measurement of landfill cover using Time Domain Reflectometry
The amount of methane that vent from landfills is dependent on the physical, chemical and biological components of the soil cover; moisture content and temperature of the soil being the major controlling factors. Previous studies have attempted to correlate moisture content and temperature with methane emission by collecting soil samples from landfill soil covers and analysing it in the ...
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Dry–wet cycles increase pesticide residue release from soil
Soil drying and rewetting may alter the release and availability of aged pesticide residues in soils. A laboratory experiment was conducted to evaluate the influence of soil drying and wetting on the release of pesticide residues. Soil containing environmentally long‐termaged (9–17 years) 14C‐labeled residues of the herbicides ethidimuron (ETD) and methabenzthiazuron (MBT) and the fungicide ...
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TOC Analysis by the Teledyne Tekmar Lotix Solids Sampler in a Variety of Matrices
Abstract The analysis of Total Organic Carbon (TOC) in samples can be difficult due to the variation of matrix types. Soil samples like sand, clay, and humus types can have erratic amounts of water, particle size, minerals, salt, and a large array of different materials depending on the collection location. The new Lotix Solid Sampler (LSS) Module used in conjunction with the Lotix ...
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