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Caracterizacion espectroscopica de s...

Rivera Collazo, Luis D.

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Caracterizacion espectroscopica de sustancias humicas y su relacion con la hidrofobicidad del suelo (Spanish text).

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Caracterizacion espectroscopica de sustancias humicas y su relacion con la hidrofobicidad del suelo (Spanish text)./
作者:	Rivera Collazo, Luis D.
面頁冊數:	113 p.
附註:	Source: Masters Abstracts International, Volume: 42-04, page: 1194.
Contained By:	Masters Abstracts International42-04.
標題:	Agriculture, Soil Science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1418262
ISBN:	0496230409

Caracterizacion espectroscopica de sustancias humicas y su relacion con la hidrofobicidad del suelo (Spanish text).
Rivera Collazo, Luis D.

Caracterizacion espectroscopica de sustancias humicas y su relacion con la hidrofobicidad del suelo (Spanish text). - 113 p.

Source: Masters Abstracts International, Volume: 42-04, page: 1194.

Thesis (M.S.)--University of Puerto Rico, Mayaguez (Puerto Rico), 2004.

Humic substances are important components of soil which play a significant role in many chemical, biological, and physical processes. Two of its primary constituents, humic acids and fulvic acids, have been attributed to play an important role in the hydrophobicity (repellency to water) of soils. Thus, our research efforts were aimed at evaluating chemical differences in humic and fulvic acids extracted from samples of the same type of soil, Rio Piedras series, but having significantly different water percolation results, based on the Water Drop Penetration Test (WDPT), in an attempt to better understand the relationship between chemical composition and hydrophobicity. To this end, two different extraction methods were evaluated, one involving sodium hydroxide as extraction solvent and the other sodium pyrophosphate.

ISBN: 0496230409Subjects--Topical Terms:

1017824
Agriculture, Soil Science.

Caracterizacion espectroscopica de sustancias humicas y su relacion con la hidrofobicidad del suelo (Spanish text).
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500 $a Adviser: Marisol Vera.
502 $a Thesis (M.S.)--University of Puerto Rico, Mayaguez (Puerto Rico), 2004.
520 $a Humic substances are important components of soil which play a significant role in many chemical, biological, and physical processes. Two of its primary constituents, humic acids and fulvic acids, have been attributed to play an important role in the hydrophobicity (repellency to water) of soils. Thus, our research efforts were aimed at evaluating chemical differences in humic and fulvic acids extracted from samples of the same type of soil, Rio Piedras series, but having significantly different water percolation results, based on the Water Drop Penetration Test (WDPT), in an attempt to better understand the relationship between chemical composition and hydrophobicity. To this end, two different extraction methods were evaluated, one involving sodium hydroxide as extraction solvent and the other sodium pyrophosphate.
520 $a Humic and fulvic acids were extracted, from samples from the Mahogany Plantation at the Agricultural Experimental Station in Rio Piedras, tested to be a strongly repellent soil, and from the Urban Forest (Bosque Urbano) in Rio Piedras, tested to be a hydrophilic soil, based on WDPT results of 234 and 4 seconds, respectively. (Abstract shortened by UMI.)
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