منابع مشابه
Migration of trace elements from pyrite tailings in carbonate soils.
In the carbonate soils contaminated by a toxic spill from a pyrite mine (Aznalcóllar, southern Spain), a study was made of a thin layer (thickness = 4 mm) of polluted soil located between the pyrite tailings and the underlying soil. This layer, reddish-yellow in color due to a high Fe content, formed when sulfates (from the oxidation of sulfides) infiltrated the soil, causing acidification (to ...
متن کاملBaseline Concentrations of 15 Trace Elements in Florida Surface Soils
The objective of this study was to establish baseline concentrations for 15 potentially toxic elements (Ag, As, Ba, Be, Cd, Cr, Cu, Hg, Mn, Mo, Ni, Pb, Sb, Se, and Zn) based on 448 representative Florida surface soils using microwave assisted HNOrHCI-HF digestion. Baseline concentrations of those elements were (mg kg-I): Ag 0.072.50, As 0.02-7.01, Ba 1.67-112, Be 0.04-4.15, Cd 6-0.33, Cr 0.89-8...
متن کاملPhytostabilization—Management Strategy for Stabilizing Trace Elements in Contaminated Soils
Contamination of soil by copper (Cu) has become a serious problem throughout the world, causing the reduction of agricultural yield and harmful effects on human health by entering the food chain. A glasshouse pot experiment was designed to evaluate the potential use of halloysite as an immobilizing agent in the aided phytostabilization of Cu-contaminated soil, using Festuca rubra L. The content...
متن کاملConcentrations of trace elements in soils: The three keys
Taxonomic categories of the highest level (e.g. the RSG of the World Reference Base for soil resources) are not adequate when dealing with trace element concentrations in soils. This does not however mean that pedology, its basic concepts and knowledge accumulated over more than a century, are of no use in this domain. Examples of the role of soil forming processes on trace element contents in ...
متن کاملDetermination of Trace Elements Bound to Soils and Sediment Fractions
This paper presents an overview of methods for chemical speciation analysis of elements in samples of sediments and soils. The sequential leaching procedure is thoroughly discussed, and examples of different applications are shown. Despite some drawbacks, the sequential extraction method can provide a valuable tool to distinguish among trace element fractions of different solubility related to ...
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ژورنال
عنوان ژورنال: Proceedings of the Nutrition Society
سال: 1960
ISSN: 0029-6651,1475-2719
DOI: 10.1079/pns19600040