نتایج جستجو برای: contamination factor cf
تعداد نتایج: 920367 فیلتر نتایج به سال:
Background and Objectives: The aim of the present study was to assess the probable heavy metals contamination in topsoil surrounding Venarj mine in Qom province using contamination indices and artificial neural networks method. Material and methods: in order to evaluate the contamination status around Venarj mine in Qom province, 70 soil samples were collected in an area of 22 Km2, and the to...
The objective of this study was to establish contamination level for, Pb, Zn, Cu, Ni, Cr, As, Hg, Sb, Co, and Cd in soils around the old Hg mine area central part Turkey. 34surface samples from were collected. Samples digested metals determined by ICP-OES assess metal using Enrichment factor (EF), (Cf), Geoaccumulation index (Igeo), hazard quotient (HQ) (individual metal), (Cd), modified (mCd),...
A three-year study, designed to record the level of potentially toxic elements within urban complex in city Volos, Greece, was carried out between 2018 and 2020. For needs aforementioned 62 surface (0–15 cm) soil samples were collected each year (i.e., 186 total) from an area 3.65 km2, average value pseudo-total metal concentration measured. Soil pollution indices, such as contamination factor ...
This research aimed at assessment of the levels, speciation, risk indices and seasonal variation heavy metals (Cd Cu) in water sediments from Hunki Ox-bow Lake Awe L.G.A Nasarawa State, using Atomic Absorption Spectrophotometer (AAS), during dry wet seasons. The mean concentration Cd samples both seasons was higher than that Cu, but Cu on whole (raw) sediment samples. baseline levels (mg/L) wer...
Recently, due to rapid industrialization and urbanization, many studies have focused on the assessment of soil metal contamination. The present research aimed investigate concentration potentially hazardous elements (Al, Cr, Cu, Fe, Mg, Mn, Ni, Pb, V Zn) in three different areas (forest, wildfire forest urban) Mediterranean region. Contamination levels were further assessed calculating indices:...
We assessed the spatial and temporal variations of pollution indicators and geochemical and trace metal parameters (23 in total) from water and sediment (144 samples) of three different eco-niches (beach, fishing harbor, and estuary) in larger coastal cities of southern India (Cuddalore and Pondicherry) for one year. A total of 120 marine Pseudomonas isolates were challenged against different c...
Soil pollution by some heavy metals including: Cr, Mn, Fe, Ni, Cu, Zn, As, Mo, Cd and Pb from northern industrial area of Erbil City was assessed. The contamination indices geoaccumulation (Igeo), factor (CF), enrichment (EF), degree (Cdeg), load index (PLI) element (ECI) were applied to assess soil in North Industrial at three sites (for both surface sub-surface soils). Maximum Fe value 34243....
The levels of heavy metals in soil samples from selected major roads under construction, burrow sites (a place where was obtained for road filling) and two use have been investigated. Soil were collected digested using standard methods. digests analyzed Ni, Cr, Zn, Cd, Cu Pb Atomic Absorption Spectrophotometer. data subjected to descriptive statistics, non linear regression one way analysis var...
This article aims to analyze the contamination of water and bottom sediment at Arroio Moinho (Mill Stream), in Porto Alegre (Rio Grande do Sul, Brazil). From two sample collections, a series diagnostic measurements were carried out, such as: a) physical-chemical biological analysis water; b) quality index (WQI); c) metal contamination, granulometric mineralogical analyses sediment; d) total org...
soil contamination significantly reduces environmental quality and affects human health. to investigate and assess the effects of land use on the concentrations of some heavy metals in surface soils of golestan province, 227 soil samples (0-60 cm) were collected from three types of land uses including agricultural lands, natural, and industrial areas. the total metals and metalloids (cr, se, as...
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