The importance of humin in soil characterisation: A study on Amazonian soils using different fluorescence techniques.
Saved in:
| Title: | The importance of humin in soil characterisation: A study on Amazonian soils using different fluorescence techniques. |
|---|---|
| Authors: | Tadini, Amanda Maria1,2 amandatadini@hotmail.com, Nicolodelli, Gustavo1, Mounier, Stephane3, Montes, Célia Regina4, Milori, Débora Marcondes Bastos Pereira1 |
| Source: | Science of the Total Environment. Dec2015, Vol. 537, p152-158. 7p. |
| Subjects: | Humins, Soil testing, Humus, Fluorescence spectroscopy |
| Geographic Terms: | Amazon River Region |
| Abstract: | Soil organic matter (SOM) is a complex mixture of molecules with different physicochemical properties, with humic substances (HS) being the main component as it represents around 20–50% of SOM structure. Soil of the Amazon region is considered one of the larger carbon pools of the world; thus, studies of the humic fractions are important for understanding the dynamics of organic matter (OM) in these soils. The aim of this study was to use laser-induced fluorescence spectroscopy (LIFS) and a combination of excitation–emission matrix (EEM) fluorescence with Parallel Factor Analysis (CP/PARAFAC) to assess the characteristics of humin (HU) extracted from Amazonian soils. The results obtained using LIFS showed that there was an increasing gradient of humification degree with depth, the deeper horizon presenting a higher amount of aromatic groups in the structure of HU. From the EEM, the contribution of two fluorophores with similar behaviour in the structures of HU and whole soil was assessed. Additionally, the results showed that the HU fraction might represent a larger fraction of SOM than previously thought: about 80–93% of some Amazon soils. Therefore, HU is an important humic fraction, thus indicating its role in environmental analysis, mainly in soil analysis. [ABSTRACT FROM AUTHOR] |
| Copyright of Science of the Total Environment is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 109501838 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: The importance of humin in soil characterisation: A study on Amazonian soils using different fluorescence techniques. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Tadini%2C+Amanda+Maria%22">Tadini, Amanda Maria</searchLink><relatesTo>1,2</relatesTo><i> amandatadini@hotmail.com</i><br /><searchLink fieldCode="AR" term="%22Nicolodelli%2C+Gustavo%22">Nicolodelli, Gustavo</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Mounier%2C+Stephane%22">Mounier, Stephane</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Montes%2C+Célia+Regina%22">Montes, Célia Regina</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Milori%2C+Débora+Marcondes+Bastos+Pereira%22">Milori, Débora Marcondes Bastos Pereira</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Science+of+the+Total+Environment%22">Science of the Total Environment</searchLink>. Dec2015, Vol. 537, p152-158. 7p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Humins%22">Humins</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+testing%22">Soil testing</searchLink><br /><searchLink fieldCode="DE" term="%22Humus%22">Humus</searchLink><br /><searchLink fieldCode="DE" term="%22Fluorescence+spectroscopy%22">Fluorescence spectroscopy</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Amazon+River+Region%22">Amazon River Region</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Soil organic matter (SOM) is a complex mixture of molecules with different physicochemical properties, with humic substances (HS) being the main component as it represents around 20–50% of SOM structure. Soil of the Amazon region is considered one of the larger carbon pools of the world; thus, studies of the humic fractions are important for understanding the dynamics of organic matter (OM) in these soils. The aim of this study was to use laser-induced fluorescence spectroscopy (LIFS) and a combination of excitation–emission matrix (EEM) fluorescence with Parallel Factor Analysis (CP/PARAFAC) to assess the characteristics of humin (HU) extracted from Amazonian soils. The results obtained using LIFS showed that there was an increasing gradient of humification degree with depth, the deeper horizon presenting a higher amount of aromatic groups in the structure of HU. From the EEM, the contribution of two fluorophores with similar behaviour in the structures of HU and whole soil was assessed. Additionally, the results showed that the HU fraction might represent a larger fraction of SOM than previously thought: about 80–93% of some Amazon soils. Therefore, HU is an important humic fraction, thus indicating its role in environmental analysis, mainly in soil analysis. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Science of the Total Environment is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=109501838 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.scitotenv.2015.07.125 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 152 Subjects: – SubjectFull: Humins Type: general – SubjectFull: Soil testing Type: general – SubjectFull: Humus Type: general – SubjectFull: Fluorescence spectroscopy Type: general – SubjectFull: Amazon River Region Type: general Titles: – TitleFull: The importance of humin in soil characterisation: A study on Amazonian soils using different fluorescence techniques. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Tadini, Amanda Maria – PersonEntity: Name: NameFull: Nicolodelli, Gustavo – PersonEntity: Name: NameFull: Mounier, Stephane – PersonEntity: Name: NameFull: Montes, Célia Regina – PersonEntity: Name: NameFull: Milori, Débora Marcondes Bastos Pereira IsPartOfRelationships: – BibEntity: Dates: – D: 20 M: 12 Text: Dec2015 Type: published Y: 2015 Identifiers: – Type: issn-print Value: 00489697 Numbering: – Type: volume Value: 537 Titles: – TitleFull: Science of the Total Environment Type: main |
| ResultId | 1 |
