Heavy metal adsorption by functinalized clays

Article Abstract:

This study evaluates functionalized clay as an adsorbent of heavy metals contamination of soil and aquifers. Clay has some limitations as an adsorbent of heavy metals, but when it can be optimized as an adsorbent when its structure is matched with a reactive and the congestion of the internal porosity of the clays is minimized. The heavy metal binding properties of sepiolite and montmorillonite functionalized are reported.

Spain, Statistical Data Included, Illustration, Soil pollution, Clay

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Effect fo scale on the behavior of atrazine in surface waters

Article Abstract:

Data on the runoff of atrazine, an agricultural pesticide, from experimental plot and field studies, when combined with the annual estimates of loan in streams and rivers, results in a data set with 408 observations covering 14 orders of magnitude in area. The study shows that the runoff is relatively invariant from field plots to the largest river basins. The results show the need for agricultural field plot studies to watershed studies across the full range of scale.

Pesticide and Other Agricultural Chemical Manufacturing, Pesticides & Other Ag Chemicals, Agricultural chemicals, not elsewhere classified, Pesticide Preparations, Pesticides Control, Economic aspects, Pollution control, Pesticides, Runoff

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Considerations necessary in gathering occurrence data for selected unstable compounds in the USEPA unregulated contaminant candidate list in USEPA method 526

Article Abstract:

Method 526, developed by the United States Environmental Protection Agency (EPA), analyzes target analytes prone to degradation by hydrolysis. The goal of this study was to determine the method's usefulness in the drinking water occurrence survey of the EPA's Unregulated Contaminant Monitoring Rule.

Administration of Air and Water Resource and Solid Waste Management Programs, Air, water, & solid waste management, Environmental Protection Agency

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