COMPARAÇÃO DE MÉTODOS PARA DETERMINAÇÃO DE SUBSTÂNCIAS HÚMICAS EM FERTILIZANTES LÍQUIDOS COMERCIAIS
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Química Nova (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422020000801138 |
Resumo: | The beneficial effects of humic substances (HS) on crop development have been evidenced in the last decade, leading to the commercialization of HS products with fertilizing properties. Currently, three methods are frequently used for HS determination: method described in the manual of the Brazilian Ministry of Agriculture, Livestock and Supply (MAPA); method employed by the United States Humic Products Trade Association (HPTA) and method used for the determination of soil HS (“HS-Soil”). This study aimed to evaluate and compare the quantification of HS in commercial liquid fertilizers, by the mentioned methods. For HA-rich fertilizers the studied methodologies presented results close to the HA and FA contents informed in the labels. For products rich in FA, the methodologies that use dichromate to oxidize organic carbon overestimated the results of FA, taking as reference the HPTA method, that determines gravimetrically the purified FA and HA. The time of analysis varied between the methodologies studied, as well as the type and volume of the produced waste. Based on the chemical principle of HS determination of the method and the environmental impact of the waste generated, we propose that the most appropriate method for determination of HS in liquid fertilizers is that of HPTA. |
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COMPARAÇÃO DE MÉTODOS PARA DETERMINAÇÃO DE SUBSTÂNCIAS HÚMICAS EM FERTILIZANTES LÍQUIDOS COMERCIAIShumic acidsfulvic acids, chemical oxidationbiostimulantsThe beneficial effects of humic substances (HS) on crop development have been evidenced in the last decade, leading to the commercialization of HS products with fertilizing properties. Currently, three methods are frequently used for HS determination: method described in the manual of the Brazilian Ministry of Agriculture, Livestock and Supply (MAPA); method employed by the United States Humic Products Trade Association (HPTA) and method used for the determination of soil HS (“HS-Soil”). This study aimed to evaluate and compare the quantification of HS in commercial liquid fertilizers, by the mentioned methods. For HA-rich fertilizers the studied methodologies presented results close to the HA and FA contents informed in the labels. For products rich in FA, the methodologies that use dichromate to oxidize organic carbon overestimated the results of FA, taking as reference the HPTA method, that determines gravimetrically the purified FA and HA. The time of analysis varied between the methodologies studied, as well as the type and volume of the produced waste. Based on the chemical principle of HS determination of the method and the environmental impact of the waste generated, we propose that the most appropriate method for determination of HS in liquid fertilizers is that of HPTA.Sociedade Brasileira de Química2020-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422020000801138Química Nova v.43 n.8 2020reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0100-4042.20170564info:eu-repo/semantics/openAccessDhein,Casiano A.Dick,Deborah P.Bender,Andressa C.por2020-10-13T00:00:00Zoai:scielo:S0100-40422020000801138Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2020-10-13T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
COMPARAÇÃO DE MÉTODOS PARA DETERMINAÇÃO DE SUBSTÂNCIAS HÚMICAS EM FERTILIZANTES LÍQUIDOS COMERCIAIS |
title |
COMPARAÇÃO DE MÉTODOS PARA DETERMINAÇÃO DE SUBSTÂNCIAS HÚMICAS EM FERTILIZANTES LÍQUIDOS COMERCIAIS |
spellingShingle |
COMPARAÇÃO DE MÉTODOS PARA DETERMINAÇÃO DE SUBSTÂNCIAS HÚMICAS EM FERTILIZANTES LÍQUIDOS COMERCIAIS Dhein,Casiano A. humic acids fulvic acids, chemical oxidation biostimulants |
title_short |
COMPARAÇÃO DE MÉTODOS PARA DETERMINAÇÃO DE SUBSTÂNCIAS HÚMICAS EM FERTILIZANTES LÍQUIDOS COMERCIAIS |
title_full |
COMPARAÇÃO DE MÉTODOS PARA DETERMINAÇÃO DE SUBSTÂNCIAS HÚMICAS EM FERTILIZANTES LÍQUIDOS COMERCIAIS |
title_fullStr |
COMPARAÇÃO DE MÉTODOS PARA DETERMINAÇÃO DE SUBSTÂNCIAS HÚMICAS EM FERTILIZANTES LÍQUIDOS COMERCIAIS |
title_full_unstemmed |
COMPARAÇÃO DE MÉTODOS PARA DETERMINAÇÃO DE SUBSTÂNCIAS HÚMICAS EM FERTILIZANTES LÍQUIDOS COMERCIAIS |
title_sort |
COMPARAÇÃO DE MÉTODOS PARA DETERMINAÇÃO DE SUBSTÂNCIAS HÚMICAS EM FERTILIZANTES LÍQUIDOS COMERCIAIS |
author |
Dhein,Casiano A. |
author_facet |
Dhein,Casiano A. Dick,Deborah P. Bender,Andressa C. |
author_role |
author |
author2 |
Dick,Deborah P. Bender,Andressa C. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Dhein,Casiano A. Dick,Deborah P. Bender,Andressa C. |
dc.subject.por.fl_str_mv |
humic acids fulvic acids, chemical oxidation biostimulants |
topic |
humic acids fulvic acids, chemical oxidation biostimulants |
description |
The beneficial effects of humic substances (HS) on crop development have been evidenced in the last decade, leading to the commercialization of HS products with fertilizing properties. Currently, three methods are frequently used for HS determination: method described in the manual of the Brazilian Ministry of Agriculture, Livestock and Supply (MAPA); method employed by the United States Humic Products Trade Association (HPTA) and method used for the determination of soil HS (“HS-Soil”). This study aimed to evaluate and compare the quantification of HS in commercial liquid fertilizers, by the mentioned methods. For HA-rich fertilizers the studied methodologies presented results close to the HA and FA contents informed in the labels. For products rich in FA, the methodologies that use dichromate to oxidize organic carbon overestimated the results of FA, taking as reference the HPTA method, that determines gravimetrically the purified FA and HA. The time of analysis varied between the methodologies studied, as well as the type and volume of the produced waste. Based on the chemical principle of HS determination of the method and the environmental impact of the waste generated, we propose that the most appropriate method for determination of HS in liquid fertilizers is that of HPTA. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422020000801138 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422020000801138 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
10.21577/0100-4042.20170564 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Química Nova v.43 n.8 2020 reponame:Química Nova (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Química Nova (Online) |
collection |
Química Nova (Online) |
repository.name.fl_str_mv |
Química Nova (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
quimicanova@sbq.org.br |
_version_ |
1750318120619212800 |