Browsing by Author "Ahumada Torres, Aída Inés de Lourdes"
Now showing items 1-20 of 23
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(SOCIEDAD CHILENA DE QUIMICA, 2004-12)The presence of high concentrations of arsenic and copper was determined in most of the environmental matrixes under study (river water, river sediments, and soils), which suggests a real impact of the copper mining activity ...
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Capillary electrophoretic determination of ions in soils / determinación de iones en suelos por ... (SOCIEDAD CHILENA DE QUIMICA, 1997-12)The applicability, sensitivity and repetitivity, as well as general aspects of the Capillary Zone Electrophoresis (CZE) technique was studied as applied in the identification and quantification of Cl-, NO3-, HCO3-, SO42-, ...
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(MARCEL DEKKER INC, 1999)Soil samples from a field irrigated with untreated industrial and municipal wastewater for several decades and from a field not receiving wastewater (control) were analyzed for total copper (Cu) and zinc (Zn) and for the ...
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(IST CHIMICA AGRARIA, UNIV PISA VIA S MICHELE DEGLI SCALZI, 1999-05)The content and the chemical forms of chromium, copper, nickel and zinc in allophanic and montmorillonitic soils, one of them irrigated exclusively with untreated sewage waters, were studied. To gain information about the ...
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(Universita degli Studi di Pisa, Istituto di Chimica Agraria, 1999)La movilidad y disponibilidad de micro elementos o trazas de metales pesados es una función de su contenido en el substrato y está determinada principalmente por las formas químicas en que se presente en aquel (KABATAPENDIAS, ...
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(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2009-06)The purpose of this study was assessing Cu and Zn availabilities in soils amended with a biosolid through the determination of their sequentially extracted chemical forms and their relationship with the contents of these ...
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(Sociedad Chilena de Química, 1997)En el presente estudio se analizaron los aspectos generales y la aplicabilidad de la técnica de Electroforesis Capilar de Zona (ECZ), evaluando la repetibilidad y sensibilidad de los resultados obtenidos al trabajar con ...
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(MARCEL DEKKER INC, 1999-01)Organic acids and phosphate were determined in soil aqueous extracts by capillary zone electrophoresis using indirect UV detection. The electrolyte system was 10 mM sodium benzoate with 0.5 mM tetradecyltrimetyl-ammonium ...
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(ELSEVIER SCIENCE BV, 2008-06-06)An efficient continuous pressurized solvent extraction (PSE) method assisted by ultrasound energy was developed for the extraction of polychlorinated biphenyls (PCBs) from biosolids. Analytes were determined in the extracts ...
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(Universita degli Studi di Pisa, Istituto di Chimica Agraria, 1995)El riego con aguas servidas no tratadas, el depósito de lodos provenientes de plantas de tratamiento de aguas, el relleno sanitario y también el uso de ciertos fertilizantes, pueden contribuir a modificar la forma y cantidad ...
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(MARCEL DEKKER INC, 2001)Some organic acids of low molecular weight, generated through breakdown of giant wastes or root exudation, increase the solubilization of heavy metals, such as cadmium (Cd) and copper (Cu) through complexation reactions ...
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(Springer, 2014)Purpose This study assessed the effect of biosolid application on the bioavailable fraction of some trace elements (Cu, Cr, Ni, and Zn) using a bioassay with sunflower (Helianthus annuus) and a chemical assay, diffusion ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2008-01)The effect of biosolid incorporation on arsenic distribution in Mollisol soils in central Chile was studied. Two soils were sequentially extracted for arsenic with a five-step method that accounts for the following arsenic ...
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(MARCEL DEKKER INC, 2004-06)Copper (Cu) mining activities are very important in central Chile. The present study consists in determining the distribution and availability of copper, arsenic (As), and lead (Pb) in soils near a smelting facility, in ...
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(Soil Science Society of America, 1984)Extraction of Cd,Cu, Ni and Zn by BaCl(Ba(ClO-4)2 solutions from El Recuerdo(Vertisol) and Puerto Octay (Andept)soils was used to measure the amounts of metals remaining extractable during a 60-d storage period under air-dry ...
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(Universita degli Studi di Pisa, Istituto di Chimica Agraria, 1980)The application of wastewaters and sludge to agricultural land as a means of disposing of the wastes has been practiced for many decades. Many recent reports (DOWDY and LARSON, 1975; LUND et al., 1976; PAGE, 1974; SCHALSCHA ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 1998)Industrial and domestic waste waters in Chile are discharged without previous treatment into rivers and other inland waters which are used to irrigate agricultural lands. The present study reports on results obtained when ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2008-08)A Study was done on the influence of redox potential on the mobility and availability of the various arsenic chemical forms in a Mollisol soil from central Chile amended with biosolid. Arsenic availability was strongly ...
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(Elsevier, 2015)A new biomimetic approach for triclosan (TCS) was developed based on the leaching of the analyte from different biosolid-amended agricultural soils and the subsequent extraction of the leachates, using a rotating disk ...
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(Sociedade Brasileira de Química, 2013)Nonsteroidal anti-inflammatory drugs (NSAIDs) are a group of medications widely used by man to heal certain ailments. However, after consumption, they may be excreted in wastewaters with consequent environmental effects. ...
