Results 31 to 40 of about 15,173 (194)

Bioavailability in soils [PDF]

open access: yes, 2011
The consumption of locally-produced vegetables by humans may be an important exposure pathway for soil contaminants in many urban settings and for agricultural land use.
A Göthberg   +164 more
core   +2 more sources

Método Mehlich 3 como substituinte ao HCl para extração de Cobre e Zinco em solos com alto teor de matéria orgânica do sul do Brasil Mehlich 3 method as substituent to the HCl method for extraction of Copper and Zinc in soils from Southern Brazil with high levels of organic matter

open access: yesCiência Rural, 2012
No presente trabalho, foram comparados dois métodos de extração de cobre (Cu) e zinco (Zn) em solos com teor de matéria orgânica (MO) maior que 50g kg-1.
Evandro Luiz Schoninger   +2 more
doaj   +1 more source

Extraction capacity and the optimal order of extraction [PDF]

open access: yesJournal of Environmental Economics and Management, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Assessment of micronutrient extractants from soils of Paraná, Brazil

open access: yesRevista Brasileira de Ciência do Solo, 2011
In Brazil, plant-available micronutrients in the soil can be determined by several chemical extractants, the most common of which are dilute acid and chelating solutions. The purpose of this study was to assess the extractants 0.1 mol L-1 HCl, Mehlich-1,
Marcos Vinicius Mansano Sarto   +2 more
doaj   +1 more source

Use of isotope dilution method to predict bioavailability of organic pollutants in historically contaminated sediments. [PDF]

open access: yes, 2014
Many cases of severe environmental contamination arise from historical episodes, where recalcitrant contaminants have resided in the environment for a prolonged time, leading to potentially decreased bioavailability.
Bao, Lian-Jun   +4 more
core   +2 more sources

Azocalixarene. 5: p-Substituted Azocalix4arenes as Extractants for Dichromate Anions [PDF]

open access: yesPakistan Journal of Analytical & Environmental Chemistry, 2008
In this article, chromium(VI) extraction properties of two azocalix4arene based receptors (L4 and L6) are reported. A preliminary evaluation of the binding efficiencies of p-substituted azocalix4arene derivatives L4 and L6 was carried out by solvent ...
Hasalettin Deligöz   +3 more
doaj  

The contents of risk elements, arsenic speciation, and possible interactions of elements and betalains in beetroot (Beta vulgaris, L.) growing in contaminated soil [PDF]

open access: yes, 2010
The effect of enhanced soil risk element contents on the uptake of As, Cd, Pb, and Zn was determined in two pot experiments. Simultaneously, transformation of arsenic and its compounds in beetroot (Beta vulgaris L.) plants was investigated.
Goessler, Walter   +4 more
core   +1 more source

Chelating Extractants for Metals

open access: yesMetals, 2022
In the present review, works on the classes of chelating extractants for metals, compounds with several amide and carboxyl groups, azomethines, oximes, macrocyclic compounds (crown ethers and calixarenes), phenanthroline derivatives, and others are ...
Pavel Yudaev, Evgeniy Chistyakov
doaj   +1 more source

Third molars: To extract or not to extract? [PDF]

open access: yesDental Press Journal of Orthodontics, 2015
showed that general dentists recommend extraction of third molars in 59% of patients, mainly to prevent future problems or because a third molar had an unfavorable orientation or was unlikely to erupt. However, the power to predict third molar eruption is low, and impacted third molars that remain static, with no changes in position or angu -lation ...
openaire   +4 more sources

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