نتایج جستجو برای: accumulation igeo

تعداد نتایج: 149890  

Journal: :Sustainability 2023

Urban ares are subjected to intensive pollution due continuous anthropogenic activity. In order assess the influence of thermal power plants and waste incineration on City Moscow recreational areas, mass fractions 37 major trace elements were determined using instrumental neutron activation analysis in soil samples collected at two different depths vicinity more potential contamination sources....

Journal: :Atmosphere 2023

For the pollution assessment and quantitative source apportionment of heavy metals in surface dust, a total 52 dust samples were collected from bus stops Tianshui City. The geoaccumulation index (Igeo) potential ecological risk (RI) used to analyze levels caused by metals. Positive Matrix Factorization (PMF) receptor modeling geo-statistics employed results as follows. ① Except for Mn, Co V, me...

ژورنال: سلامت و محیط زیست 2017

Background and Objective: Street dust is considered as one of the important sources of particulate matters and heavy metals in the atmosphere. The goal of this study was to assess the heavy metals pollution in street dust of Tehran and evaluate their ecological risk. Materials and Methods: The sampling of street dust was carried out in two areas at the east and west of Tehran. After preparatio...

ژورنال: علوم آب و خاک 2018

Dust particles are suspended particles created from various natural and anthropogenic sources. Dust particles contain toxic metals, such as mercury (Hg), which can have harmful effects on the human health. In this study, to investigate the contamination level of Hg in the street dust in Ahvaz, 95 dust samples were collected from the pavements in the main streets. The concentration of Hg in the ...

Journal: :Water 2021

Polluted sediments limit the useful and biotic life of a water reservoir. Therefore, classification verification contamination pollution levels reservoirs are essentials for preservation biota to organize actions environmental management. Thus, aim this study is determine concentrations potentially toxic metals [lead (Pb), zinc (Zn), nickel (Ni), copper (Cu), cadmium (Cd)] in sediment samples c...

Journal: :Minerals 2023

Previously conducted studies have established that soil contamination by trace elements (TEs) around coal mines affects ecological biodiversity and human health. One of the ways to protect health surrounding population mine sites is through assessment impacts accurate procedures for establishment relevant reclamation plan. The aim study develop an applied methodological approach easily assess q...

Journal: :Turkish Journal of Agricultural and Natural Science 2023

Erzurum ili İspir ilçesi Ulutaş köyünde yapılan bu çalışmada, tabanda yer alan metamorfik birimin üzerinde volkanik ve sedimanter kayaçlar diskordanslı bir şekilde almıştır. ilçesinin 20 km kuzeyinde köyü yakın çevresinde Cu - Zn cevherleşmesinin çevre topraklardaki metal birikimlerini, kirliliğini metallerin neden olduğu kirlilik kaynaklarını araştırmak amacıyla toprak örneği alınmıştır. Bu ka...

Journal: :Marine pollution bulletin 2011
Erwan Tessier Cédric Garnier Jean-Ulrich Mullot Véronique Lenoble Mireille Arnaud Michel Raynaud Stéphane Mounier

This study presents trace elements levels in surface and deep sediments of the Toulon bay (SE France) subjected to anthropogenic inputs (navy base, harbors, etc.). The studied elements (As, Cd, Cr, Cu, Hg, Ni, Pb, Zn) are defined as priority contaminants in aquatic systems. Fifty-five points scattered on the entire bay were sampled, allowing the determination of contaminants distribution with a...

2015
Deming Dong Xiaoxue Liu Zhiyong Guo Xiuyi Hua Yulong Su Dapeng Liang

The objectives of this study were to investigate the seasonal and spatial variations of heavy metal pollution in the overlying water and surface sediments of the Tiaozi River, a tributary of the Liao River, which is one of the seven major rivers and one of the most heavily-polluted rivers in China. Water and sediment samples were collected over four seasons, analyzed for heavy metals (Pb, Cu, N...

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