نتایج جستجو برای: pollution load index pi

تعداد نتایج: 641799  

Journal: :Journal of Geoscience and Environment Protection 2022

Gold mining is now widely acknowledged as one of the significant sources soil pollution in developed countries. In developing countries, and levels contamination have not been thoroughly addressed. Thus, this study was intended to determine source level active closed gold areas. The research paper presents load heavy metals (lead-Pb, chromium-Cr, cadmium-Cd, copper-Cu, arsenic-As, manganese-Mn,...

2018
M. Tholkappian R. Ravisankar A. Chandrasekaran J. Prince Prakash Jebakumar K.V. Kanagasabapathy M.V.R. Prasad K.K. Satapathy

The concentration of some heavy metals: Al, Ca, K, Fe, Ti, Mg, Mn, V, Cr, Zn, Ni and Co in sediments from Pulicat Lake to Vadanemmeli along Chennai Coast, Tamil Nadu has been determined using EDXRF technique. The mean concentrations of Mg, Al, K, Ca, Ti, Fe, V, Cr, Mn, Co, Ni, and Zn were found to be 1918, 25436, 9832, 9859, 2109, 8209, 41.58, 34.14, 160.80, 2.85. 18.79 and 29.12 mg kg-1 respec...

Farshid Majnoni , Gholamreza Banagar , Hossein Alipour, Majid Ajorlo , Mehdi Hassanpour ,

Background: This study aimed to evaluate the pollution levels of surface water with heavy metals including Pb, Cd and Cr in Gheshlagh River, western Iran. Methods: Water and sediment were sampled in five monitoring stations with three replicates in time along the river. The concentration of Cr, Pb and Cd in both water and sediment samples were measured with graphite furnace atomic absorption ...

Journal: :iranian journal of mathematical chemistry 2010
a. d. manikpuri s. aziz p. e. john p. v. khadikar

the sadhana index (sd) is a newly introduced cyclic index. efficient formulae for calculatingthe sd (sadhana) index of linear phenylenes are given and a simple relation is establishedbetween the sd index of phenylenes and of the corresponding hexagonal sequences.

Journal: :Turkish journal of analytical chemistry 2022

This study aimed to investigate the risk of element/heavy metal pollution caused by listvenitization. In this context, heavy listvenite-derived soils in region where listvenitized ultrabasic rocks are present as a result hydrothermal alterations vicinity Alakeçi (Bayramiç Çanakkale/Western Türkiye) was investigated with index, geoaccumulation index and integrated parameters. For purpose, Cu, Zn...

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...

Journal: :iranian journal of environmental sciences 0
gurumoorthi k faculty of marine sciences, annamalai university, parangipettai - 608 502, india venkatachalapathy r department of physics, annamalai university, annamalai nagar - 608 002, india

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...

A Talebi A Zare Gariz,

In this study, the process-based watershed model, Soil and Water Assessment Tool (SWAT), was used for simulating hydrology and sediment transport in the Gharesou watershed and for identifying critical areas of soil erosion and water pollution. After model calibration and uncertainty analysis using SUFI-2 (Sequential Uncertainty Fitting, ver. 2) method, the outputs of the calibrated model were u...

Water and sediment samples have been collected from five different stations, located along Djendjen River between February and June, 2016 so that the concentrations of Cd, Ni, Zn, and Cu could be determined. The extent of the sediment pollution has been assessed, using the multiple pollution indices, namely Contamination Factor (CF), Pollution Load Index (PLI), and the geoaccumulation index (Ig...

Journal: Pollution 2018

Water and sediment samples have been collected from five different stations, located along Djendjen River between February and June, 2016 so that the concentrations of Cd, Ni, Zn, and Cu could be determined. The extent of the sediment pollution has been assessed, using the multiple pollution indices, namely Contamination Factor (CF), Pollution Load Index (PLI), and the geoaccumulation index (Ig...

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