نتایج جستجو برای: contamination factor and geo
تعداد نتایج: 16949835 فیلتر نتایج به سال:
The ratio of cosmogenic 10 Be and its stable isotope 9 has been used as a proxy long-term continental weathering fluxes denudation rates, but transport processes these isotopes from river water to estuarine seawater, well interference potential anthropogenic source on natural Be/ around populated estuaries are not constrained. Here, we present results concentrations dissolved reactive particula...
This study evaluated the concentration of toxic elements in soil samples from agricultural fields districts Sachaca, Socabaya, Hunter, Quequeña, Yarabamba, Characato and Tiabaya city Arequipa, Peru. The ecological risk, enrichment factor (EF), geo-accumulation index (Igeo) integrated risk (RI) were estimated, while health was determined with hazard coefficient (HQ) (HI) values. Seven collected ...
The Al-Salam Lagoon is one of the recreational sites along Jeddah coast, showing environmental impacts urbanization coast. A sediment core (220 cm) was collected from intertidal zone to evaluate heavy metals (Fe, Mn, Cr, Ni, Cu, Zn, and Pb) geochemical indices (contamination factor, geo-accumulation index, pollution load index). In organ-ic-rich muddy sediments (0–100 cm), there a high content ...
The main objective of the present study is to assess level contamination, source identification, and health risk assessment heavy metals in industrial soils Aurangabad. A total 15 Soil samples were collected with a sampling density 3–5 composite soil from 0–10 cm surface soil, analyzed (Ni, Pb, Cd, Zn, Cr, Mn, Fe, Cu) using atomic absorption spectroscopy. geographical information system (GIS) t...
The spatial and temporal distributions, contamination evaluation, source apportionment of Cu, Zn, As, Pb, Cd, Cr in the sediments Hulun Lake were explored this work. pollution characteristics six heavy metals assessed by single factor index (PI) geo-accumulation (Igeo). sources surface analyzed positive definite matrix factorization (PMF) Pearson correlation analysis. sedimentary records core r...
objectives the aim of this study was to assess soils of khorramabad metropolis in order to establish the concentration of lead and develop a contamination factor map. materials and methods soil samples were collected from 25 different urban parks in khorramabad, iran. the mean pb contents in the urban topsoil samples were compared with mean concentrations for other cities around the world. a sp...
The concentration of selected trace metals (Fe, Cd, Cu, Pb, and Zn) in 30surface sediments were measured using Atomic Absorption Spectrometer to investigatethe spatial and seasonal variations of trace metals along Kanyakumari coast, India. Toassess the environmental risk of trace metals, enrichment factor, geo-accumulation index,pollution load index, and ecological risk index have been calculat...
The concentration of selected trace metals (Fe, Cd, Cu, Pb, and Zn) in 30surface sediments were measured using Atomic Absorption Spectrometer to investigatethe spatial and seasonal variations of trace metals along Kanyakumari coast, India. Toassess the environmental risk of trace metals, enrichment factor, geo-accumulation index,pollution load index, and ecological risk index have been calculat...
This study reports the presence of heavy metals (Cr, Ni, Cu, Cd, Pb) in sediment and water column Köyceğiz Lagoon Estuary System (KLES) (South-West Anatolia). The mean metal concentrations (µg L-1) were found as Cr: 3.72-8.36, Ni: 6.51-9.48, Cu: 1.29-11.88, Cd: ND-0.08, Pb: ND-0.34. samples to be below internationally acceptable limits. (mg kg-1) 1.75-4.25, 5.24-12.69, 0.25-0.51, <0.01, ...
Soil-Transmitted Helminths (geo-helminths) are intestinal parasites causing human infections that soil-borne. The study assessed the level of soil contamination with geo-helminths ova and also evaluated compliance to WASH policies in some selected public private schools Akure North Owo Local Government Areas Ondo state, respectively. was conducted major districts two towns.
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