نتایج جستجو برای: geoaccumulation index (igeo)

تعداد نتایج: 396189  

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...

2014
Ni Zhao Xinwei Lu Shigang Chao

Concentrations of the environmentally sensitive elements (ESEs) As, Co, Cu, Mn, Ni, Pb, V and Zn in smaller than 100 μm street dust particles from Xining were measured using X-ray fluorescence spectrometry and their contamination levels were assessed based on enrichment factor (EF), geoaccumulation index (Igeo) and pollution load index (PLI). The concentrations of As, Co, Cu, Mn, Ni, Pb, V and ...

2012
M. A. Ashraf M. J. Maah I. Yusoff

The chemical speciation of heavy metals (arsenic, chromium, copper, lead, zinc and tin) in the sediments of former tin mining catchment Bestari Jaya, Peninsular Malaysia was determined by using the latest version of the Community Bureau of Reference, usually called the BCR 3-step sequential extraction procedure. Furthermore, a fourth step was introduced for digestion and analysis of the residue...

Journal: :international journal of environmental research 2012
m.m. serbaji c. azri k. medhioub

eight selected heavy metals (cu, zn, pb, cd, cr, mn, fe and al) in surface and sub-surfacesediments in the northern coast of sfax (tunisia) were studied in order to assess the sediment quality and tohighlight the anthropogenic contributions to heavy metal distributions in the two study sediment levels.multiple chemometric approaches based on geographic information system (gis), enrichment facto...

2016
Yongfu Wu Xinwei Lu Xiufeng Han Yan Zhou

The objective of this study was to investigate the concentration and spatial distribution patterns of six potentially toxic heavy metal elements (Mn, Zn, Cr, Pb, Cu and Ni) in bus station dusts in the Xifeng district of Gansu province, NW China. The contents were analyzed for Mn, Zn, Cr, Pb, Cu and Ni by using S8 TIGER Brochures wavelength dispersive X-ray fluorescence spectrometry. Geoaccumula...

Journal: :international journal of environmental research 0
m.m. serbaji université de sfax, ecole nationale d’ingénieurs de sfax - larsen, ur « etude et gestion des environnements côtiers et urbains », route soukra, km 3,5, bp 1173, 3038 sfax, tunisie c. azri université de sfax, faculté des sciences de sfax, département des sciences de la terre, ur « etude et gestion des environnements côtiers et urbains », route soukra, km 3,5, pb 1171, 3000, sfax, tunisie k. medhioub université de sfax, institut préparatoire aux etudes d’ingénieurs de sfax, ur « etude et gestion des environnements côtiers et urbains », route menzel chaker, km 1,5, bp 805, 3018 sfax, tunisie

eight selected heavy metals (cu, zn, pb, cd, cr, mn, fe and al) in surface and sub-surfacesediments in the northern coast of sfax (tunisia) were studied in order to assess the sediment quality and tohighlight the anthropogenic contributions to heavy metal distributions in the two study sediment levels.multiple chemometric approaches based on geographic information system (gis), enrichment facto...

Journal: :Marine pollution bulletin 2013
Guogang Li Bangqi Hu Jianqiang Bi Qinuan Leng Chunqiao Xiao Zhongcheng Yang

Selected heavy metals (Cr, Cu, Ni, Pb and Zn) in surface sediments from the coastal Shandong Peninsula (Yellow Sea) have been determined to evaluate the spatial distribution and potential ecological risk. Results showed that heavy metal concentrations in the sediments generally met the criteria of China Marine Sediment Quality. However, both the enrichment factor (EF) and geoaccumulation index ...

Journal: :iranian journal of toxicology 0
محمدرضا وصالی ناصح mohammad reza vesali naseh , university of tehran, tehran, iran. عبدالرضا کرباسی abdolreza karbassi , university of tehran, tehran, iran. فریدون غضبان fereydoon ghazaban , university of tehran, tehran, iran. اکبر باغوند akbar baghvand , university of tehran, tehran, iran.

background: evaluation of heavy metals as toxic pollutants in environment has a significant importance in environmental pollution studies. surficial sediments of water resources have a high potential in releasing heavy metals to the upper water environment, hence sediment analysis presents guidelines to the authorities for monitoring the environmental systems. methods: in this study, total and ...

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