نتایج جستجو برای: contamination factor cf

تعداد نتایج: 920367  

ژورنال: بوم شناسی آبزیان 2022
Amrollahi Biuki, Narges, Safaie, Mohsen, Soleimanirad, Asieh, Taherizadeh, Mohammad Reza,

Sediment samples were collected from 8 sites in the northern areas of Qeshm Island, Iran to determine the total and partial concentrations of heavy metals including copper (Cu), lead (Pb), nickel (Ni), cadmium (Cd), and Iron (Fe), in February 2016. A combination of nitric acid and perchloric acid was used to determine the total concentrations and sequential extraction method was used to analyze...

Background & Aims of the Study: Due to the increased human activities around the Agh Gel wetland, this study aimed to measured accumulations of heavy metals (Ni, Pb and Zn) in the surface sediment samples taken from this wetland. Materials & Methods: Samples were taken from 10 stations and exposed to bulk digestion and chemical partitioning. Finally, Ni, Pb and Zn conce...

Journal: :Frontiers in Environmental Science 2022

The river environment is complex and receives a variety of contaminants from numerous sources that are persistent, bioaccumulative, toxic. distribution, source, contamination, ecological risk status Zn, Pb, Cu, Ni, Cr, Cd were evaluated in the surface sediments at 45 sites on Moyang Jian rivers Western Guangdong, China. Single pollution indices, including contamination factor (CF) enrichment (E...

Journal: :Sustainability 2023

This study examined the spatio-temporality of heavy metal concentrations (Al, Cd, Co, Cr, Fe, Mn, Ni, Pb and Zn) in sediments Lake Bafa, one most important wetlands Turkey’s Aegean region. The evaluated sediment quality according to threshold effect concentration (TEC) probable (PEC) values based on guidelines (SQG), provided a potential ecological risk assessment (PERI) along with indices such...

Journal: :Bulletin de la Société royale des sciences de Liège 2022

Surface waters are usually exposed to industrial, urban, and agricultural wastes. This study assessed the water sediments quality of important primary watercourse in Tunisia principal source domestic irrigation purposes, Medjerda River. Water samples were analyzed for total suspended solids, calcium, magnesium, hardness, carbonates, bicarbonates, residual sodium hazard, magnesium hazard. They c...

Journal: :International scientific and vocational studies journal 2023

Soil samples in Moryayla village located 156 km northeast of Erzurum and Cu mineralization area around it were collected randomly. In these samples, 20 taken order to investigate the metals found pollution limits sources that cause this pollution. The geochemical analyzes (Cd, Cr, Cu, Ni, Pb, Zn Fe) soil made evaluated with parameters. calculation parameters, enrichment factor (EF); geoaccumula...

2016
Mohamed Youssef Abdelbaset El-Sorogy Khaled Al-Kahtany

In order to assess the distribution of mercury along the Tarut coast, Arabian Gulf, Thirty eight (38) sediment samples, twenty six (26) seawater samples, and forty (40) Mollusca specimens were collected from the Tarut coast. The concentrations of Mercury in the sediments of the studied area (average 1⁄4 0.55 mg/g) are generally high comparing to the reported values from the Gulf of Oman, Red Se...

Journal: :Agronomy 2022

Recent decades have witnessed a danger to food security as well human health because of pollutants’ negative impact on crop quality. An accurate estimate the heavy metal concentrations in Egypt’s north Nile Delta is required lower high concentration levels soil means develop remediation strategy that stabilizes metals contaminated soil. Using geo-accumulation index (I-geo), contamination factor...

Journal: :محیط زیست طبیعی 0
رضوان زارع زاده دانشگاه هرمزگان پیمان رضائی دانشگاه هرمزگان

gabrik in the east of hormozgan province is mangrove habitat and one of the important mangrove protected area. this area is located in oman coasts. this zone because of building jagin dam on gabrick river and existence of sand barrier and exposure of pollution, it is possible to destroy or to be important threats of this planet. base on importance of this sea inhabitation some of sedimentology ...

Journal: :Social Science Research Network 2021

The Spatial and temporal variability of soil properties (fluid composition, structure water content) hydrogeological employed for sustainable precision agriculture can be obtained from geoelectrical resistivity methods. For agricultural practices, site-specific information is paramount, especially at the planting season. An integrated one-dimensional (1D) two-dimensional (2D) electrical surveys...

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