Journal ArticleDOI
A baseline study on trace metal elution from diverse soil types
TLDR
In this article, ten soils were leached with a dilute solution of AICI3, and FeCl2 adjusted with HCl to pH 3.0, and the effluents were analyzed for eight trace metals as well as pH, to determine the maximum contribution of the soils to the trace metal burden of the soil solution.Abstract:
Ten soils were leached with a dilute solution of AICI3, and FeCl2 adjusted with HCl to pH 3.0. The effluents were analyzed for eight trace metals as well as pH, to determine the maximum contribution of the soils to the trace metal burden of the soil solution. This contribution was correlated with various soil properties to evaluate the controlling factors on the elution of certain metals. Measurable quantities of Mn, Co, Zn, Ni, Cu, and Cr were found in the soil leachates; Cd and Pb were infrequently detected. The important soil properties describing the amounts of the elements leached were the total metal originally present, the total amount of Mn, and the percentage of free iron oxides.read more
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Journal ArticleDOI
Highway runoff and potential for removal of heavy metals in an infiltration pond in Portugal
TL;DR: Highway runoff from IP 4, a mountain road in the north-east of Portugal, has been monitored using a system integrating a raingauge, a flowmeter and an automatic water sampler, showing a relatively high sorption strength, which means that it is considered reliable, concerning highway runoff treatment and groundwater protection.
Book ChapterDOI
Metals in aquatic and terrestrial systems: sorption, speciation and mobilization.
TL;DR: In this paper, the authors identify the phenomena responsible for retarding the metal fluxes and which are capable of increasing the metal mobility in order to select disposal sites which provide conditions to provoke minimum pollutant dispersion from the point source.
Journal ArticleDOI
Capping efficiency for metal-contaminated marine sediment under conditions of submarine groundwater discharge.
TL;DR: Results indicate that advective flow may lead to significantly higher metal fluxes than those under undisturbed conditions, and capping efficiency decreased relative to that with no SGD.
Journal ArticleDOI
Effects of salinity, light intensity and sediment on growth, pigments, agar production and reproduction in Gracilaria tenuistipitata from Songkhla Lagoon in Thailand
TL;DR: Salinity was the most crucial factor affecting G.’tenuistipitata growth and production and extrapolation of the results from the laboratory study to field conditions indicated that it was possible to obtain two crops of Gracilaria a year in the lagoon, with good yields of agar, from mid‐January to the end of April (dry season), and from mid-July to the start of September (first rainy season) when provided sediment was restricted.
Journal ArticleDOI
Migration of heavy metals in two Japanese soils
TL;DR: In this article, the migration of common bio-toxic heavy metals in two typical soils of Japan under the influence of various leaching solutions was investigated, and the results indicated that the Pb and Cu ions were less mobile than those on Zn and Cd.