Equipment to measure the oxygen diffusion rate and redox potential in soil

Detalhes bibliográficos
Autor(a) principal: Herrmann, Paulo Sergio de Paula
Data de Publicação: 1997
Outros Autores: Andrade, Manoel Gomes de, Colnago, Luiz Alberto, Silveira, Pedro Marques da
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/4703
Resumo: An instrument to measure the oxygen diffusion rate (ODR) and redox potential (RP) to characterize soil aeration with the same electrodes was developed and tested. The analogic circuits were based on BiMOS operational amplifiers, and the digital, on CMOS technology. The system has six platinium electrodes, 0.35 mm in diameter for measurements, and one calomel electrode for reference. The ODR or redox function is selected by a switch, and the electrode selection is made by a thumbwhell switch. The data are shown in a 3 1/2 liquid cristal display. The redox potential can be measured from -1.999 V to + 1.999 V, and the ODR, from -19.99 μA to + 19.99 μA. The results were similar to those obtained with the redox and ODR commercial equipments.
id EMBRAPA-4_9beb07d28463e8b88463ec458bce3e58
oai_identifier_str oai:ojs.seer.sct.embrapa.br:article/4703
network_acronym_str EMBRAPA-4
network_name_str Pesquisa Agropecuária Brasileira (Online)
repository_id_str
spelling Equipment to measure the oxygen diffusion rate and redox potential in soilEquipamento para medida da taxa de difusão de oxigênio e potencial de oxirredução no solooxygen diffusion rate; redox potential; soil aerationtaxa de difusão de oxigênio, potencial redox; aeração do soloAn instrument to measure the oxygen diffusion rate (ODR) and redox potential (RP) to characterize soil aeration with the same electrodes was developed and tested. The analogic circuits were based on BiMOS operational amplifiers, and the digital, on CMOS technology. The system has six platinium electrodes, 0.35 mm in diameter for measurements, and one calomel electrode for reference. The ODR or redox function is selected by a switch, and the electrode selection is made by a thumbwhell switch. The data are shown in a 3 1/2 liquid cristal display. The redox potential can be measured from -1.999 V to + 1.999 V, and the ODR, from -19.99 μA to + 19.99 μA. The results were similar to those obtained with the redox and ODR commercial equipments.Desenvolveu-se e testou-se um instrumento para medida da taxa de difusão de oxigênio (TDO) e potencial redox (PR) para caracterizar o estado de aeração do solo. Os circuitos analógicos foram baseados em amplificadores operacionais BiMOS, e os digitais, na tecnologia CMOS. O sistema possui seis eletrodos de platina, com 0,35 mm de diâmetro para medidas, e um eletrodo de calomelano como referência. A função TDO ou potencial redox é selecionada por uma chave simples, e os eletrodos, por uma chave thumbwhell. Os dados são mostrados em "display" de cristal líquido de 3 1/2 dígitos. O potencial redox pode ser medido de -1,999 V a +1,999 V, e a corrente que relaciona a TDO, de -19,99 μA a +19,99 μA. Os resultados foram similares aos obtidos com equipamentos individuais comerciais de TDO e redox.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraHerrmann, Paulo Sergio de PaulaAndrade, Manoel Gomes deColnago, Luiz AlbertoSilveira, Pedro Marques da1997-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/4703Pesquisa Agropecuaria Brasileira; v.32, n.7, jul. 1997; 725-730Pesquisa Agropecuária Brasileira; v.32, n.7, jul. 1997; 725-7301678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/4703/7335info:eu-repo/semantics/openAccess2015-03-03T18:39:22Zoai:ojs.seer.sct.embrapa.br:article/4703Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2015-03-03T18:39:22Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Equipment to measure the oxygen diffusion rate and redox potential in soil
Equipamento para medida da taxa de difusão de oxigênio e potencial de oxirredução no solo
title Equipment to measure the oxygen diffusion rate and redox potential in soil
spellingShingle Equipment to measure the oxygen diffusion rate and redox potential in soil
Herrmann, Paulo Sergio de Paula
oxygen diffusion rate; redox potential; soil aeration
taxa de difusão de oxigênio, potencial redox; aeração do solo
title_short Equipment to measure the oxygen diffusion rate and redox potential in soil
title_full Equipment to measure the oxygen diffusion rate and redox potential in soil
title_fullStr Equipment to measure the oxygen diffusion rate and redox potential in soil
title_full_unstemmed Equipment to measure the oxygen diffusion rate and redox potential in soil
title_sort Equipment to measure the oxygen diffusion rate and redox potential in soil
author Herrmann, Paulo Sergio de Paula
author_facet Herrmann, Paulo Sergio de Paula
Andrade, Manoel Gomes de
Colnago, Luiz Alberto
Silveira, Pedro Marques da
author_role author
author2 Andrade, Manoel Gomes de
Colnago, Luiz Alberto
Silveira, Pedro Marques da
author2_role author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Herrmann, Paulo Sergio de Paula
Andrade, Manoel Gomes de
Colnago, Luiz Alberto
Silveira, Pedro Marques da
dc.subject.por.fl_str_mv oxygen diffusion rate; redox potential; soil aeration
taxa de difusão de oxigênio, potencial redox; aeração do solo
topic oxygen diffusion rate; redox potential; soil aeration
taxa de difusão de oxigênio, potencial redox; aeração do solo
description An instrument to measure the oxygen diffusion rate (ODR) and redox potential (RP) to characterize soil aeration with the same electrodes was developed and tested. The analogic circuits were based on BiMOS operational amplifiers, and the digital, on CMOS technology. The system has six platinium electrodes, 0.35 mm in diameter for measurements, and one calomel electrode for reference. The ODR or redox function is selected by a switch, and the electrode selection is made by a thumbwhell switch. The data are shown in a 3 1/2 liquid cristal display. The redox potential can be measured from -1.999 V to + 1.999 V, and the ODR, from -19.99 μA to + 19.99 μA. The results were similar to those obtained with the redox and ODR commercial equipments.
publishDate 1997
dc.date.none.fl_str_mv 1997-07-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/4703
url https://seer.sct.embrapa.br/index.php/pab/article/view/4703
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/4703/7335
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.32, n.7, jul. 1997; 725-730
Pesquisa Agropecuária Brasileira; v.32, n.7, jul. 1997; 725-730
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
_version_ 1793416662094970880

Registros relacionados