نتایج جستجو برای: trace elements and heavy metals

تعداد نتایج: 16889651  

Journal: :Chemosphere 2003
Diego A Moreno Gemma Víllora Juan M Ruiz Luis Romero

Soils contaminated with low levels of heavy metals and other trace elements are now frequently used for vegetable growing. In this situation, heavy metals and trace elements from these polluted soils may accumulate in the agricultural plants being grown in them and thereby enter the human food chain. The objectives of this study are to elucidate the effects of growth conditions, manipulated by ...

A Hajati F Ghadimi M Ghomi M Ranjbar

Measurements of Pb, Cu, Zn, As, Ni, Hg, and Fe heavy metals and major elements and components such as Ca, HCO3, SO4, Na, K, Mg and Cl in soluble rain fractions were performed on rainwater collected at Arak plain during the rainy seasons of 2012. Concentrations of the heavy metals in the soluble fractions decreased for Fe, Pb, Zn, Ni, Cu, As and Hg, respectively and the major elements and compon...

Meysam Alizamir, Soheil Sobhanardakani,

Background: The effects of trace elements on human health and the environment gives importance to the analysis of heavy metals contamination in environmental samples and, more particularly, human food sources. Therefore, the current study aimed to predict arsenic and heavy metals (Cu, Pb, and Zn) contamination in the groundwater resources of Ghahavand Plain based on an artificial neural network...

Atieh Makhlough, Maryam Shaliji, Mohammad Shokrzadeh, Siyavash Abedi ,

Background: Accumulation or deficiency of trace elements can occur in hemodialysis patients and it increases risk of cardiovascular or other organs disorders. Special ions levels such as sodium and bicarbonate in dialysis fluid are accurately regulated but the remaining elements are not regularly measured. Aluminum and lead belong to the biologic performance free heavy metals .They also has a t...

2012
Semra Çoruh Sermin Elevli Feza Geyikçi

Copper flotation waste is an industrial by-product material produced from the process of manufacturing copper. The main concern with respect to landfilling of copper flotation waste is the release of elements (e.g., salts and heavy metals) when in contact with water, that is, leaching. Copper flotation waste generally contains a significant amount of Cu together with trace elements of other tox...

2005
Arturo Massol-Deyá Dustin Pérez Ernie Pérez Manuel Berrios Elba Díaz

Plants are good environmental sensors of the soil conditions in which they are growing. They also respond directly to the state of air. The tops of plants are collectors of air pollutants, and their chemical composition may be a good indicator for contaminated-areas when it is assessed against background values obtained for unpolluted vegetation. Both, aquatic and terrestrial plants are known t...

2015
Mehmet Melek Halit Demir Fatih Caglar Celikezen Nesrin Ceylan Salim Bilici Ismet Alkis Ufuk Cobanoglu Tugba Gur Canan Demir Nihat Demir

Received: 13 Oct. 2014, Revised 15 Oct. 2014, Accepted 22 Oct. 2014, Available Online 25 Oct. 2014 Yuzuncu Yil University, Faculty of Medicine, Department of Pediatric Surgery, Van. Turkey. Yuzuncu Yil University, Faculty of Science, Division of Biochemistry, Department of Chemistry, Van. Turkey. Bitlis Eren University, Faculty of Art and Science, Division of Biochemistry, Department of Chemist...

Journal: :Environmental Health Perspectives 1994
J G Penland

Although the trace element boron has yet to be recognized as an essential nutrient for humans, recent data from animal and human studies suggest that boron may be important for mineral metabolism and membrane function. To investigate further the functional role of boron, brain electrophysiology and cognitive performance were assessed in response to dietary manipulation of boron (approximately 0...

2016
Kurniawan R. Trijatmiko Conrado Dueñas Nikolaos Tsakirpaloglou Lina Torrizo Felichi Mae Arines Cheryl Adeva Jeanette Balindong Norman Oliva Maria V. Sapasap Jaime Borrero Jessica Rey Perigio Francisco Andy Nelson Hiromi Nakanishi Enzo Lombi Elad Tako Raymond P. Glahn James Stangoulis Prabhjit Chadha-Mohanty Alexander A. T. Johnson Joe Tohme Gerard Barry Inez H. Slamet-Loedin

More than two billion people are micronutrient deficient. Polished grains of popular rice varieties have concentration of approximately 2 μg g(-1) iron (Fe) and 16 μg g(-1) zinc (Zn). The HarvestPlus breeding programs for biofortified rice target 13 μg g(-1) Fe and 28 μg g(-1) Zn to reach approximately 30% of the estimated average requirement (EAR). Reports on engineering Fe content in rice hav...

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