Geogenic background
WebSep 5, 2013 · The bend (distinct change of the slope at arrow position) cuts data set into two parts: geogenic background concentration set and anthropogenically effected concentration set (Matschullat et al., 2000). The elemental concentration at the bend (the upper limit of background content) is defined as GBL (Matschullat et al., 2000). WebFor sites needing assessment of whether metals and metalloids may be present due to natural geologic processes (geogenic), an effort based solely on sampling of site media and the subsequent statistical analysis of results to determine background concentrations and to establish the presence and extent of contamination may well prove inadequate ...
Geogenic background
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WebMar 21, 2024 · A dominant contributor to the naturally occurring geogenic background material throughout Butler County is the pervasive glacial till, a result of the Wisconsin glaciation (~ 75–11 ka), and which underlies approximately 90% of the county (Ohio Department of Natural Resources). The glacial till of Butler County therefore makes an … WebOct 1, 2013 · The findings point to a potential health risk from Cd in areas with high geogenic background concentrations of this metal. Previous article in issue; Next article in issue. 1. Introduction. Cadmium is a non-essential and toxic trace metal to human beings, animals and plants. Cadmium generally ...
WebApr 14, 2024 · The geogenic radon potential is primarily controlled by the geological characteristics of the site, such as the rock type and structural elements, as well as the permeability of the soil. Depending on the scope of the survey, the geogenic radon potential can be mapped based on measurements conducted in the field at various resolutions. … What is the natural geogenic background for southwestern Ohio? For this study, the background was characterized as an abundant near surface geologic material which shows no anthropogenic influence. It is acknowledged here that other potential background candidate materials do exist in the area (the … See more From both a geochemical and a mineralogical perspective, the glacial till sampled is relatively homogenous. As documented, for … See more The µCT results presented here indicate a wide range of particle volumes in each of the samples, though distributions were all skewed towards the … See more Comprehensive studies in the peer-reviewed literature which focus on the mineralogy of bedrock or glacial tills in southwestern Ohio are lacking. The entire Ordovician section of … See more Reflective spectroscopy enables rapid characterization and can be used to compare tills that may be mineralogically similar. The features observed in reflective spectra are consistent with the mineralogical and … See more
WebAug 1, 2024 · Cadmium Background Levels in Groundwater in an Area Dominated by Agriculture Andreas Kubier,*† Kay Hamer,† and Thomas Pichler† †Department of Geosciences, University of Bremen, Bremen, Germany ABSTRACT Cadmium is a highly toxic trace metal, which can be of geogenic or anthropogenic origin, for example, … Webpretation. From these, the geogenic background is deter-mined, mainly as a fixed value (mean or median). This determination requires expert knowledge about the geo-chemical …
WebSep 1, 2006 · The main aim of this research was to establish a reliable method to determine the local geogenic background concentration in case of areas characterized by natural enrichment for some trace ...
WebGeogenic concentrations are defined as those concentrations that represent the natural background without any anthropogenic influence. The paper describes a statistical method for determining geogenic metal … ray pajatsoWebproduction of plastics since the 1950s) and the absence of geogenic background lev els, due to the purely anthropogenic 45 production of the materials (Zalasiewicz et al., 2016; Dong et al., 2024) . Potential impacts from plastics in general , but especially MP particles on soil s, comprise influences on soil structure , material rayo zaragozaWebJan 20, 2024 · Assessing natural background levels of geogenic contaminants in groundwater of an urbanized delta through removal of groundwaters impacted by … rayovac ultra proWebJan 8, 2024 · These cannot be determined in the case of plastic contamination, as the geogenic background content of plastic in soils must be zero due to its purely anthropogenic origin. Against this background, the results of the present study show that in floodplain soils, a low-to-moderate risk can be expected solely by heavy metal … dr. zeinab hijaziWebJan 20, 2024 · 1. Introduction. Natural background levels (NBLs) of chemical components are usually compared with their concentrations in groundwater to serve as an early warning of groundwater contamination, so that taking measures in time to protect groundwater resources (Griffioen et al., 2008).Here, the NBL in groundwater is defined as the … dr zeifang jamedaWebNatural geogenic sources of soil pollution. Contaminants such as trace elements, radionuclides, asbestos and other contaminants occur naturally in soils due to geological and pedological processes without anthropogenic influence (ISO, 2015; Tian et al., 2024).In this instance, their concentration in the soil, at a given place and time, is called the … dr zeba faroquiWebJun 18, 2024 · The geogenic background of several Mexican aquifers (mainly by arsenic and fluoride) is a well-known problem that is favored by the complex geological context of the country, as well as by its active tectonic setting (Armienta and Segovia 2008). ray pasinski romark