Comparison of Methods to Quantify Organic Carbon in Soil Samples from São Paulo State, Brazil

Días, Rosane da Silva; Abreu, Cleide Aparecida de; Abreu, Mônica Ferreira de; Paz‐Ferreiro, Jorge; Matsura, Edson Eiji; Paz‐González, Antonio

doi:10.1080/00103624.2013.742345

Cited by 17 publications

(10 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The C concentrations determined by dry combustion and loss-on-ignition were higher than those determined by wet combustion, as observed in other studies (GATTO et al, 2009;SEGNINI et al, 2008;CONYERS et al, 2011;COSER et al, 2012;DIAS et al, 2013). These results are related to the capacity of dry combustion to oxidize all forms of C found in soil, with different forms and levels of protection or complexation with minerals, including C from coal.…”

Section: Discussionsupporting

confidence: 65%

“…Detection of the impact of agricultural management on soil C content requires precise analytical methods for the determination of this element (CONYERS et al, 2011). However, several studies have demonstrated that there is a difference in sensitivity among the methods currently used in Brazil to determine soil C concentration (GATTO et al, 2009;CARMO;DIAS et al, 2013). The choice of the analytical method is fundamental for the understanding of the dynamics of C in response to soil management over time (BRYE;SLATON, 2003).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Methods for the determination of carbon in Ultisol in eastern Amazon

Rodrigues¹,

Vasconcelos²,

Pereira³

et al. 2013

RCA

View full text Add to dashboard Cite

Soil carbon (C) content is a sensitive indicator of agricultural management impact. Different methods are usually adopted to determine soil C content, which can lead to variable results and therefore hinder the correct interpretation of management impacts. In this study, we tested three commonly used soil C determination methods (dry combustion with elemental analysis, dry combustion with loss-on-ignition, and wet combustion) with soil samples from agricultural sites under different management conditions (fire and fire-free land preparation) and forest. The wet combustion method underestimated soil C content in relation to the standard method (dry combustion with elemental analysis). We found high determination coefficients of predictive equations of total C (dry combustion with elemental analysis) based on concentration values determined either through wet combustion or losson-ignition. Thus, we recommend the use of the loss-on-ignition method, which is cheap, fast, and of low environmental impact, to predict total soil C concentration under the studied management conditions. RESUMO: O teor de carbono (C) no solo é um indicador sensível de impacto de manejo agrícola. Diferentes métodos são atualmente adotados para determinar o teor de C do solo, o que pode levar a resultados variados e, dessa maneira, dificultar a interpretação dos impactos do manejo. Neste estudo, testamos três métodos de determinação de C comumente usados (combustão via seca em analisador elementar, combustão via seca por perda de massa por ignição e combustão via úmida), com amostras de solo de áreas agrícolas sob diferentes manejos (preparo de área com e sem queima) e de floresta. O método de combustão via úmida subestimou o teor de C do solo em relação ao método padrão (combustão via seca em analisador elementar). Encontramos altos coeficientes de determinação das equações de predição do C total (combustão via seca em analisador elementar), baseada em valores determinados tanto por combustão via úmida quanto por combustão via seca por perda de massa por ignição. Portanto, recomendamos o uso do método de perda de massa por ignição, que é barato, rápido e de baixo impacto ambiental, para predizer a concentração total de C sob as condições de manejo estudadas.

show abstract

Section: Discussionsupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Methods for the determination of carbon in Ultisol in eastern Amazon

Rodrigues¹,

Vasconcelos²,

Pereira³

et al. 2013

RCA

View full text Add to dashboard Cite

show abstract

“…Detection of organic carbon fraction (f oc ): The procedure used is based on a wet digestion method without heating followed by colorimetric determination (Chatterjee et al, 2009;Da Silva Dias et al, 2012). Briefly, a 0.5 g sediment sample was placed in a 100 mL Erlenmeyer flask, then 10 mL of potassium dichromate solution (0.667 mol L À1 ) and 10 mL of sulfuric acid were added.…”

Section: Sample Extraction and Instrumental Analysismentioning

confidence: 99%

Perfluoroalkyl and polyfluoroalkyl substances in sediments from South Bohai coastal watersheds, China

Zhu

Wang

et al. 2014

Marine Pollution Bulletin

View full text Add to dashboard Cite

“…El método de DC mide directamente el carbono total del suelo sin necesidad de un factor de corrección (Salehi et al, 2011). En este método, la muestra se calcina entre 950-1300ºC, obteniendo CO2 que pasa a través de un catalizador que mide, mediante espectroscopía de absorción infrarroja, el carbono total (Dias et al, 2013;Pribyl, 2010).…”

Section: Introductionunclassified

“…Otra opción para determinar la MOS es la aplicación del método de calcinación o muflado que consiste en la medición de la pérdida de peso por ignición (Loss On Ignition, LOI) de la muestra de suelo. En este método los investigadores proponen la calcinación de diferentes cantidades de muestras de suelo que van de 2 a 100g, de temperaturas entre 220 a 600°C y tiempos que oscilan de 2 a 48h en un horno de mufla (Dias et al, 2013;Kamara et al, 2007;Martínez et al, 2018;Westman et al, 2006). El objetivo del método LOI, es destruir la MOS por calor ocasionado la oxidación de las formas condensadas de humus y residuos orgánicos apenas alterados.…”

Section: Introductionunclassified

Evaluación Del Método De Ignición Para Determinar Materia Orgánica en Suelos De La Provincia El Oro-Ecuador

Unda¹,

Cervantes-Alava²,

Ullauri-Espinoza³

et al. 2020

FAVE Sección Ciencias Agrarias

View full text Add to dashboard Cite

El método de pérdida de peso por ignición (Loss On Ignition -LOI) se utiliza para estimar la materia orgánica del suelo (MOS) pero tiene sus ventajas y limitaciones, frente a otros métodos que lo calculan partiendo del carbono orgánico (CO). El objetivo del trabajo fue, calibrar el método LOI para utilizarlo en suelos de origen aluvial cultivados con cacao (Theobroma cacao L.). Se utilizaron 30 muestras de suelo extraída entre 0 a 30cm de profundidad, en las que se determinaron la MOS por LOI a 350, 430 y 600°C durante 2h y que fueron contrastadas con las determinaciones del por CO combustión seca (DC) y Walkley y Black (WB). Los valores obtenidos por LOI aumentaron de 3,46% <4,95%<7,66%, al incrementar la temperatura, siendo inferiores a los obtenidos con DC (1,85%) y WB (1,96%). El mejor ajuste lineal obtenido entre LOI y DC fue, a 430°C con un coeficiente de explicación (R2) igual a 0,83. Aunque el método LOI a 430°C fue el de mejor ajuste para ser utilizada en el cálculo de la MOS se deben realizar más repeticiones para un mejor modelo de calibración.

show abstract

Comparison of Methods to Quantify Organic Carbon in Soil Samples from São Paulo State, Brazil

Cited by 17 publications

References 14 publications

Methods for the determination of carbon in Ultisol in eastern Amazon

Methods for the determination of carbon in Ultisol in eastern Amazon

Perfluoroalkyl and polyfluoroalkyl substances in sediments from South Bohai coastal watersheds, China

Evaluación Del Método De Ignición Para Determinar Materia Orgánica en Suelos De La Provincia El Oro-Ecuador

Contact Info

Product

Resources

About