On-the-go tropical soil sensing for pH determination using ion-selective electrodes
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/22930 |
Resumo: | The objective of this work was to assess the performance of an antimony ion-selective electrode (ISE) sensor system, using manual and automatic operating modes, for measuring the potential of hydrogen (pH), in real time, in Oxisols with different characteristics. Samples were manually collected and sent to a laboratory for determination of pH in water and calcium chloride, whose values were used as references. Another set of samples was also automatically collected using a commercial equipment, and readings were performed in manual mode. The performance parameters of the sensor system were calculated and evaluated. Part of the soil samples was used to assess the degree of influence of moisture in determining pH. Calibration lines were constructed. The statistical analysis revealed better results for the manual mode. Both modes of operation had errors superior to those accepted as a limit in laboratory techniques, however, with the possibility of high data density and with positive and promising results. Soil moisture interfered with the result of the readings. The sensor system yields a sampling density of 45 data per hectare, which represents a great contribution to the intensification of data for a better spatial evaluation of soil information. |
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On-the-go tropical soil sensing for pH determination using ion-selective electrodesMensuração direta do pH de solos tropicais por meio de eletrodos íon seletivosdirect soil sensing; precision agriculture; real-time mappingsensores diretos de solo; agricultura de precisão; mapeamento em tempo realThe objective of this work was to assess the performance of an antimony ion-selective electrode (ISE) sensor system, using manual and automatic operating modes, for measuring the potential of hydrogen (pH), in real time, in Oxisols with different characteristics. Samples were manually collected and sent to a laboratory for determination of pH in water and calcium chloride, whose values were used as references. Another set of samples was also automatically collected using a commercial equipment, and readings were performed in manual mode. The performance parameters of the sensor system were calculated and evaluated. Part of the soil samples was used to assess the degree of influence of moisture in determining pH. Calibration lines were constructed. The statistical analysis revealed better results for the manual mode. Both modes of operation had errors superior to those accepted as a limit in laboratory techniques, however, with the possibility of high data density and with positive and promising results. Soil moisture interfered with the result of the readings. The sensor system yields a sampling density of 45 data per hectare, which represents a great contribution to the intensification of data for a better spatial evaluation of soil information.O objetivo deste trabalho foi avaliar o desempenho de um conjunto sensor direto, de íon seletivo (ISE) de antimônio, usando os modos de funcionamento manual e automático, na determinação do potencial hidrogeniônico (pH), em tempo real, em Latossolos com diferentes características. Amostras foram coletadas com trado e encaminhadas a laboratório para a determinação do pH em água e do cloreto de cálcio, cujos valores foram utilizados como referência. Um segundo conjunto de amostras foi coletado automaticamente utilizando-se um equipamento disponível no mercado, e foram executadas leituras em seu modo manual. Parâmetros de desempenho do conjunto foram calculados e avaliados. Parte dessas amostras de solo foi utilizada para avaliar a influência da umidade na determinação do pH. Retas de calibração foram construídas. As análises estatísticas apresentaram melhor resultado para o modo manual. Ambos os modos de operação apresentaram erros superiores aos aceitos como limite em técnicas laboratoriais, porém, com a possibilidade de elevada densidade de dados e com resultados positivos e promissores. Verificou-se que a umidade do solo interferiu no resultado das leituras. O conjunto sensor fornece uma densidade de amostragem de 45 dados por hectare, o que representa uma grande contribuição para a intensificação de dados para melhor avaliação espacial da informação do solo.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFinanciadora de Estudos e Projetos (Finep, project no. 01.08.0566.00)Zambianco Açúcar e ÁlcoolSilva, Fernanda Cristina de SouzaMolin, José Paulo2018-12-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/22930Pesquisa Agropecuaria Brasileira; v.53, n.11, nov. 2018; 1189-1202Pesquisa Agropecuária Brasileira; v.53, n.11, nov. 2018; 1189-12021678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/22930/14334https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/22930/14935Direitos autorais 2018 Pesquisa Agropecuária Brasileirainfo:eu-repo/semantics/openAccess2018-12-17T19:23:28Zoai:ojs.seer.sct.embrapa.br:article/22930Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2018-12-17T19:23:28Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
On-the-go tropical soil sensing for pH determination using ion-selective electrodes Mensuração direta do pH de solos tropicais por meio de eletrodos íon seletivos |
title |
On-the-go tropical soil sensing for pH determination using ion-selective electrodes |
spellingShingle |
On-the-go tropical soil sensing for pH determination using ion-selective electrodes Silva, Fernanda Cristina de Souza direct soil sensing; precision agriculture; real-time mapping sensores diretos de solo; agricultura de precisão; mapeamento em tempo real |
title_short |
On-the-go tropical soil sensing for pH determination using ion-selective electrodes |
title_full |
On-the-go tropical soil sensing for pH determination using ion-selective electrodes |
title_fullStr |
On-the-go tropical soil sensing for pH determination using ion-selective electrodes |
title_full_unstemmed |
On-the-go tropical soil sensing for pH determination using ion-selective electrodes |
title_sort |
On-the-go tropical soil sensing for pH determination using ion-selective electrodes |
author |
Silva, Fernanda Cristina de Souza |
author_facet |
Silva, Fernanda Cristina de Souza Molin, José Paulo |
author_role |
author |
author2 |
Molin, José Paulo |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Financiadora de Estudos e Projetos (Finep, project no. 01.08.0566.00) Zambianco Açúcar e Álcool |
dc.contributor.author.fl_str_mv |
Silva, Fernanda Cristina de Souza Molin, José Paulo |
dc.subject.por.fl_str_mv |
direct soil sensing; precision agriculture; real-time mapping sensores diretos de solo; agricultura de precisão; mapeamento em tempo real |
topic |
direct soil sensing; precision agriculture; real-time mapping sensores diretos de solo; agricultura de precisão; mapeamento em tempo real |
description |
The objective of this work was to assess the performance of an antimony ion-selective electrode (ISE) sensor system, using manual and automatic operating modes, for measuring the potential of hydrogen (pH), in real time, in Oxisols with different characteristics. Samples were manually collected and sent to a laboratory for determination of pH in water and calcium chloride, whose values were used as references. Another set of samples was also automatically collected using a commercial equipment, and readings were performed in manual mode. The performance parameters of the sensor system were calculated and evaluated. Part of the soil samples was used to assess the degree of influence of moisture in determining pH. Calibration lines were constructed. The statistical analysis revealed better results for the manual mode. Both modes of operation had errors superior to those accepted as a limit in laboratory techniques, however, with the possibility of high data density and with positive and promising results. Soil moisture interfered with the result of the readings. The sensor system yields a sampling density of 45 data per hectare, which represents a great contribution to the intensification of data for a better spatial evaluation of soil information. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-13 |
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/22930 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/22930 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/22930/14334 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/22930/14935 |
dc.rights.driver.fl_str_mv |
Direitos autorais 2018 Pesquisa Agropecuária Brasileira info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Direitos autorais 2018 Pesquisa Agropecuária Brasileira |
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.53, n.11, nov. 2018; 1189-1202 Pesquisa Agropecuária Brasileira; v.53, n.11, nov. 2018; 1189-1202 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 |
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1793416664998477824 |