نتایج جستجو برای: heavy trace elements

تعداد نتایج: 449046  

2010
M. Shahabuddin Dilder Hossain S. M. Hossain Monzurul Hoque Mamun Mollah M. A. Halim

In this paper, the contamination level of fourteen elements (Al, Ca, Mg, V, Ti, Na, Mn, As, Br, La, Sm, Sc, U, Yb) from different soil samples of the nuclear reactor surrounding areas in Savar, Bangladesh was investigated with instrumental neutron activation analysis (INAA) method. Generally, neutron activation is most reliable tool for determining the concentration of the trace elements and he...

Journal: :Chemosphere 2006
Kurunthachalam Kannan Tetsuro Agusa Emily Perrotta Nancy J Thomas Shinsuke Tanabe

Infectious diseases have been implicated as a cause of high rates of adult mortality in southern sea otters. Exposure to environmental contaminants can compromise the immuno-competence of animals, predisposing them to infectious diseases. In addition to organic pollutants, certain trace elements can modulate the immune system in marine mammals. Nevertheless, reports of occurrence of trace eleme...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2013
Matthew J Kohn Randolph J Moses

Diffusion rates of numerous trace elements in bone at 20 °C were determined using laser-ablation inductively coupled plasma mass spectrometry analysis of experimentally induced diffusion profiles. Diffusivities are about 1 order of magnitude slower than current semiquantitative geochemical views and about 1.5 orders of magnitude faster than indirect radiotracer estimates. Intrabone volume diffu...

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...

This study was carried out for the purpose of investigating the issue of tailings dams as a potential source of contamination by trace elements in soils at the Sidi Bou Othmane mine in the Marrakech Region, Morocco. Soil samples taken from depths of up to 15 cm and within a radius of 50 m from the tailings dams, were analyzed for Cd, Cu, Pb and Zn using atomic absorption spectrometry. Average c...

Journal: Pollution 2016

This study was carried out for the purpose of investigating the issue of tailings dams as a potential source of contamination by trace elements in soils at the Sidi Bou Othmane mine in the Marrakech Region, Morocco. Soil samples taken from depths of up to 15 cm and within a radius of 50 m from the tailings dams, were analyzed for Cd, Cu, Pb and Zn using atomic absorption spectrometry. Average c...

Journal: :iranian journal of pharmaceutical research 0
naficeh sadeghi department of drug and food control, school of pharmacy, medical sciences/university of tehran, tehran, iran mohammad reza oveisi adepartment of drug and food control, school of pharmacy, tehran university of medical sciences, tehran, iran behrooz jannat food and drug laboratory research center, ministry of health and medical education, tehran, iran. mannan hajimahmoodi department of drug and food control, school of pharmacy, tehran university of medical sciences, tehran, iran. abdolazim behfar 1,.food and drug laboratory research center, ministry of health and medical education, tehran, iran.2.cfood sciences and medical hydrology department, school of pharmacy, ahvaz jundishapur university of medical sciences, ahvaz,iran. masoomeh behzad department of drug and food control, school of pharmacy, tehran university of medical sciences, tehran, iran

apart from the breast milk, infant formula and baby weaning food have a special role in infant diet. infants and young children are very susceptible to amount of trace elements. copper and zinc are two elements that add in infant food. lead and cadmium are heavy metals that enter to food chain unavoidably. dpasv is a benefit and applicable method for measurement of trace elements in food produc...

1997

There are many chemical constituents that enter the municipal waste stream that are of potential concern for human health. These substances include organic chemicals, inorganic trace elements (such as cadmium and lead), and nitrogen. Conventional agricultural practices, such as the use of commercial fertilizers, also have the potential to introduce additional chemical constituents to soil. Howe...

Alavi, , Moayyed, , Yadegari, ,

The study area is located in the south of Qushadagh mountain range, in the north of Asbkhan village, Heris township. In terms of structural geology of Iran, this area is located in the main zone of Central Iran and Alborz-Azerbaijan sub-zone. The geological units of the region are including Eocene igneous and pyroclastic rocks with combination of andesitic, trachyandesitic, basaltic, tuffic and...

Journal: :Phosphorus Research Bulletin 2004

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