نتایج جستجو برای: soils trace elements

تعداد نتایج: 377361  

2015
Veronica M. Ngole-Jeme Georges-Ivo E. Ekosse Paul B. Tchounwou

This study compared the granulometric properties, mineralogical composition and concentrations of major and trace element oxides of commonly ingested soils (geophagic soil) collected from different countries with a view of understanding how varied they may be in these properties and to understand the possible health implications of ingesting them. Soil samples were collected from three differen...

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 ...

Journal: :International journal of phytoremediation 2013
P Madejón L Ciadamidaro T Marañón J M Murillo

Phytostabilization aims to immobilize soil contaminants using higher plants. The accumulation of trace elements in Populus alba leaves was monitored for 12 years after a mine spill. Concentrations of As and Pb significantly decreased, while concentrations of Cd and Zn did not significantly over time. Soil concentrations extracted by CaCl2 were measured by ICP-OES and results of As and Pb were b...

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...

Journal: :The Journal of the Association of Physicians of India 1992
A Mehta S R Joshi

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