نتایج جستجو برای: Bioaccumulation factor (BAF)

تعداد نتایج: 847799  

2017
Ellen Besseling Edwin M Foekema Martine J van den Heuvel-Greve Albert A Koelmans

It has been hypothesized that ingestion of microplastic increases exposure of aquatic organisms to hydrophobic contaminants. To date, most laboratory studies investigated chemical transfer from ingested microplastic without taking other exposure pathways into account. Therefore, we studied the effect of polyethylene (PE) microplastic in sediment on PCB uptake by Arenicola marina as a model spec...

Journal: :global journal of environmental science and management 2015
d. sivakumar j. nouri

this study was focused on removal of various parameters in paper mill effluent using a method called bioremediation by azolla caroliniana.  the experimental investigations have been carried out using azolla caroliniana for conducting the sorption study with various dilution ratios (2, 4, 6, 8, and 10), ph (3, 4, 5, 6, 7, 8 and 9) and biomass (200, 400, 600, 800 and 1000 g). the maximum removal ...

2014
A. H. Bu-Olayan B. V. Thomas

Our study was based on the recent increase in wastewater pollution and its deleterious effects to the marine ecosystem. Using numerical simulation (DESCAR3.2 software program), we investigated the orientation and quantification of trace metals in wastewater discharges from permanent and semi-permanent drain outfalls constructed along the Kuwait Coastline encompassing six Kuwait Governorates (GI...

Journal: :Ecotoxicology and environmental safety 2016
Maria do Carmo Bittencourt-Oliveira Micheline Kézia Cordeiro-Araújo Mathias Ahii Chia João Dias de Toledo Arruda-Neto Ênio Tiago de Oliveira Flávio dos Santos

The use of microcystins (MCs) contaminated water to irrigate crop plants represents a human health risk due to their bioaccumulation potential. In addition, MCs cause oxidative stress and negatively influence photosynthetic activities in plants. The present study was aimed at investigating the effect of MCs on photosynthetic parameters and antioxidative response of lettuce. Furthermore, the bio...

2016
Sandip Singh Bhatti Vasudha Sambyal Avinash Kaur Nagpal

Berseem (Trifolium alexandrinum) is one of the main fodder crops of Punjab, India. But due to the heavy metal contamination of agricultural soils by anthropogenic activities, there is rise in metal bioaccumulation in crops like Berseem. In addition to human influence, heavy metal contents in soil are highly dependent on soil characteristics also. Therefore a study was conducted in areas having ...

2012
James H. Lindsay

5 Previous investigations on the military relevant metal, tungsten (W), have paved the way for further 6 exploration of its relevant environmental and biological pathways. This investigation presents the most 7 robust known trophic transfer study of W between plant and animal models. Steady state of W in 8 cabbage (Brassica oleracae) was reached at 114-days with a bioaccumulation factor (BAF) o...

ژورنال: اکوبیولوژی تالاب 2015
ابراهیم پور کاسمانی, محمد, بابایی, هادی, برامکی یزدی, رحیمه, رضایی, محمد رضا, پورخباز, علیرضا,

امروزه مطالعه در مورد جذب فلزات سنگین در موجودات آبزی به دلیل افزایش این فلزات در اثر فعالیت‌های انسانی و سرازیر شدن آن به محیط‌های آبی تشدید شده است. درک اثرات سمی فلزات بر ماهیان مشکل است به این دلیل که ماهیان مهاجرت طولانی دارند، بنابراین غلظت و طول دوره در معرض قرار گرفتن به فلزات، در سیکل زندگی ماهیان متفاوت می‌باشد. هدف از این تحقیق بررسی مقایسه فاکتور انباشتگی زیستی  فلزات (کادمیوم، مس، ...

Journal: :international journal of environmental research 0

rapid industrialization, installation of mega-desalination plants and suspected trace metals discharges in the kuwait marine environment instigated us to determine the trace metals toxicity on the body structures (first dorsal fin, otolith and scales) of the commercially relished mullet fish, liza klunzingeri. 96 h toxicity test with fe, cd, ni, as, showed the body structure of l. klunzingeri t...

Journal: :محیط زیست طبیعی 0
مریم زارع دانشجوی کارشناسی ارشد، گروه محیط زیست، دانشکده منابع طبیعی دانشگاه تهران، ایران امیرحسین حمیدیان استادیار گروه محیط زیست، دانشکده منابع طبیعی دانشگاه تهران، ایران هادی پورباقر استادیار گروه شیلات، دانشکده منابع طبیعی دانشگاه تهران، ایران سهراب اشرفی استادیار گروه محیط زیست، دانشکده منابع طبیعی دانشگاه تهران، ایران لیلا وزیری دانشجوی کارشناسی، گروه محیط زیست، دانشکده منابع طبیعی دانشگاه تهران، ایران

industrial activities lead to an increase in heavy metal burden in rivers. sediment and algae (spirogyra sp.) samples were collected from the shoor river to investigate their heavy metal concentrations. dry and ashed samples of algae and sediment were digested using concentrated nitric acid. heavy metals (as, fe, zn and cr) concentration measured using an icp-oes instrument (perkinelmer, usa). ...

2009
Marius GHEJU Ionel BALCU Mihaela CIOPEC

Concentration levels of hexavalent chromium in contaminated soil and in Zea mays plant parts were determined and Cr(VI) bioaccumulation and bioconcentration capacity of this plant were discussed. Zea mays seeds were sown in 40 mg Cr(VI)/kg dw polluted soil. After harvesting it was observed that hexavalent chromium concentrations in plant organs decreased in the following order: roots > stems > ...

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