A simple laboratory project for introducing nonpoint source pollution concept to students of environmental and agricultural related courses

Detalhes bibliográficos
Autor(a) principal: Vidal,M.M.
Data de Publicação: 2009
Outros Autores: Filipe,O.M.S., Costa,M.C.C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2009000100038
Resumo: This paper reports a simple laboratory project to introduce students to the nonpoint source pollution, which may be an issue of great interest to both undergraduate and graduate students of environmental or agricultural chemistry courses. The aim of this work is introduce to the students the concepts and techniques such as the polymericbased controlled release system of an agrochemical, theory of diffusion (first Fick law) and spectrophotometric analysis. Thus, this laboratory project includes three experimental modules to be conducted during three weeks. Programmatic contents are described in this proceeding. Students must be aware that dissemination of nutrients and pesticides is prone to occur by both surface runoff and groundwater leaching, causing damages on all neighboring land. To demonstrate dissemination of such pollutants, we have chosen inorganic phosphorus as example of a common agrochemical. Students are invited to follow the eventual movement of the inorganic P into the groundwater. With this purpose, gelatin gels containing inorganic P were prepared to obtain a continuous release of inorganic P at a controlled rate. The slow release of P allows fewer applications and less active ingredient needed, helping to prevent leaching, with consequent reduction of groundwater contamination. At this point, students are able to compare the advantages of slow release inorganic P vs. its application by conventional methods.
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spelling A simple laboratory project for introducing nonpoint source pollution concept to students of environmental and agricultural related coursesThis paper reports a simple laboratory project to introduce students to the nonpoint source pollution, which may be an issue of great interest to both undergraduate and graduate students of environmental or agricultural chemistry courses. The aim of this work is introduce to the students the concepts and techniques such as the polymericbased controlled release system of an agrochemical, theory of diffusion (first Fick law) and spectrophotometric analysis. Thus, this laboratory project includes three experimental modules to be conducted during three weeks. Programmatic contents are described in this proceeding. Students must be aware that dissemination of nutrients and pesticides is prone to occur by both surface runoff and groundwater leaching, causing damages on all neighboring land. To demonstrate dissemination of such pollutants, we have chosen inorganic phosphorus as example of a common agrochemical. Students are invited to follow the eventual movement of the inorganic P into the groundwater. With this purpose, gelatin gels containing inorganic P were prepared to obtain a continuous release of inorganic P at a controlled rate. The slow release of P allows fewer applications and less active ingredient needed, helping to prevent leaching, with consequent reduction of groundwater contamination. At this point, students are able to compare the advantages of slow release inorganic P vs. its application by conventional methods.Sociedade de Ciências Agrárias de Portugal2009-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2009000100038Revista de Ciências Agrárias v.32 n.1 2009reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2009000100038Vidal,M.M.Filipe,O.M.S.Costa,M.C.C.info:eu-repo/semantics/openAccess2024-02-06T17:01:40Zoai:scielo:S0871-018X2009000100038Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:17:00.853226Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv A simple laboratory project for introducing nonpoint source pollution concept to students of environmental and agricultural related courses
title A simple laboratory project for introducing nonpoint source pollution concept to students of environmental and agricultural related courses
spellingShingle A simple laboratory project for introducing nonpoint source pollution concept to students of environmental and agricultural related courses
Vidal,M.M.
title_short A simple laboratory project for introducing nonpoint source pollution concept to students of environmental and agricultural related courses
title_full A simple laboratory project for introducing nonpoint source pollution concept to students of environmental and agricultural related courses
title_fullStr A simple laboratory project for introducing nonpoint source pollution concept to students of environmental and agricultural related courses
title_full_unstemmed A simple laboratory project for introducing nonpoint source pollution concept to students of environmental and agricultural related courses
title_sort A simple laboratory project for introducing nonpoint source pollution concept to students of environmental and agricultural related courses
author Vidal,M.M.
author_facet Vidal,M.M.
Filipe,O.M.S.
Costa,M.C.C.
author_role author
author2 Filipe,O.M.S.
Costa,M.C.C.
author2_role author
author
dc.contributor.author.fl_str_mv Vidal,M.M.
Filipe,O.M.S.
Costa,M.C.C.
description This paper reports a simple laboratory project to introduce students to the nonpoint source pollution, which may be an issue of great interest to both undergraduate and graduate students of environmental or agricultural chemistry courses. The aim of this work is introduce to the students the concepts and techniques such as the polymericbased controlled release system of an agrochemical, theory of diffusion (first Fick law) and spectrophotometric analysis. Thus, this laboratory project includes three experimental modules to be conducted during three weeks. Programmatic contents are described in this proceeding. Students must be aware that dissemination of nutrients and pesticides is prone to occur by both surface runoff and groundwater leaching, causing damages on all neighboring land. To demonstrate dissemination of such pollutants, we have chosen inorganic phosphorus as example of a common agrochemical. Students are invited to follow the eventual movement of the inorganic P into the groundwater. With this purpose, gelatin gels containing inorganic P were prepared to obtain a continuous release of inorganic P at a controlled rate. The slow release of P allows fewer applications and less active ingredient needed, helping to prevent leaching, with consequent reduction of groundwater contamination. At this point, students are able to compare the advantages of slow release inorganic P vs. its application by conventional methods.
publishDate 2009
dc.date.none.fl_str_mv 2009-01-01
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dc.publisher.none.fl_str_mv Sociedade de Ciências Agrárias de Portugal
publisher.none.fl_str_mv Sociedade de Ciências Agrárias de Portugal
dc.source.none.fl_str_mv Revista de Ciências Agrárias v.32 n.1 2009
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