نتایج جستجو برای: index enrichment factor

تعداد نتایج: 1241533  

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...

2016
M. C. Ong F. M. Fok K. Sultan B. Joseph

Geochemical sediment of the tropical Pinang River, Malaysia was carried out with the aim at documenting elemental concentrations and pollution level assessment. Concentration of selected heavy metals (Cu, Cd, Cr, Pb, Zn and Mn), rare earth elements, TOC and grain size distribution of sediments were determined at 100 m sampling interval along the river. Sediment size showed a positive correlatio...

Mohammad Elyas Moslempour Sara Shahdadi

20 soil samples collected from the vicinity of the Khash Cement plant, Iran, were analyzed for As, Cd, Co, Cr, Cu, Mn, Mo, Ni, Pb and Zn using ICP-OES. The results revealed that the metal distribution were in a fluctuating manner considering various distances and direction from the cement facility. However, it was observed that the mean concentration of the soil samples has no special trend wit...

Azizi, Sajad, Besharati, Pouya, Parsinezhad, Shahrzad, Zamani, Pedram Masoud,

Many elements such as Arsenic (As), Cadmium (Cd), Copper (Cu), Chromium (Cr), Lead (Pb), Zinc (Zn), and others are major environmental problems due to their toxic nature, nonbiodegradability and accumulative behaviors. There are anthropogenic or geogenic sources that accumulate or rotate elements in sediments. Sediments served as excellent indicator of metal pollution in coastal environments as...

2012
Chiu - Wen Chen Chih - Feng Chen Cheng - Di Dong

The distribution, enrichment, accumulation, and potential ecological risk of copper (Cu) in the surface sediments of northern Kaohsiung Harbor, Taiwan were investigated. Sediment samples from 12 locations of northern Kaohsiung Harbor were collected and characterized for Cu, aluminum, water content, organic matter, total nitrogen, total phosphorous, total grease and grain size. Results showed th...

Journal: :محیط شناسی 0
فرشته دست گشاده کارشناس ارشد شیمی تجزیه، رئیس ادارۀ امور آزمایشگاه ها، ادارۀ کل حفاظت محیط زیست استان البرز امیدرضا تونی کارشناس ارشد اقتصاد محیط زیست، رئیس ادارۀ نظارت و پایش، ادارۀ کل حفاظت محیط زیست استان البرز سیما مقدم شیخ جان کارشناس ارشد مهندسی کشاورزی، کارشناس ادارۀ امور آزمایشگاه ها، ادارۀ کل حفاظت محیط زیست استان البرز گیتی تقی نژاد کارشناس ارشد شیمی کاربردی، کارشناس ادارۀ امور آزمایشگاه ها، ادارۀ کل حفاظت محیط زیست استان البرز نرگس همتیان کارشناس شیمی کاربردی، کارشناس ادارۀ امور آزمایشگاه ها، ادارۀ کل حفاظت محیط زیست استان البرز رقیه حاتمی کارشناس آلودگی محیط زیست، کارشناس مسئول ادارۀ امور آزمایشگاه ها، ادارۀ کل حفاظت محیط زیست استان البرز

air pollution is today a major problem for modern societies. it has long been recognized as a potentially lethal form of pollution. increasing pollution levels due to rapid urbanization and growth in emission related to vehicular transportation are now caused major concern. the mobilization of heavy metals into the biosphere by human activities has become an important process in the geochemical...

Journal: :global journal of environmental science and management 2016
h. janadeleh a. hosseini alhashemi s.m.b. nabavi

the major aim of the present study was to investigate element (fe, ni, pb, v, zn) concentrations in sediment and different tissues of phragmities australis and typha latifolia in hor al-azim wetland southwest iran. sampling of sediments and aquatic plants was carried out during spring and summer 2014. results showed that the mean  concentrations of elements in phragmities australis  in root and...

The current paper determines heavy metals in sediments of six freshwater wetlands of greater Dhaka district from November 1999 to September 2000. The sampling took place in summer, rainy season, and winter, wherein for each season five soil samples were collected from the wetland at a depth of 0 – 15 cm. To assess the status of heavy metal pollution in the sediments, geo-accumulation factor (Ig...

Journal: Pollution 2018

The current paper determines heavy metals in sediments of six freshwater wetlands of greater Dhaka district from November 1999 to September 2000. The sampling took place in summer, rainy season, and winter, wherein for each season five soil samples were collected from the wetland at a depth of 0 – 15 cm. To assess the status of heavy metal pollution in the sediments, geo-accumulation factor (Ig...

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