The rapid, simple and accurate determination of soil quality indicators is fundamental for improvements in precision agriculture and consequently in production efficiency. The objectives of this study were to determine the organic matter (OM) and total organic carbon (TOC) concentrations in agricultural soil and to discriminate soil provenance by energy-dispersive X-ray fluorescence (EDXRF) combined with principal component analysis and partial least square regression. The conventional methods used for the determination of OM and TOC concentrations are the gravimetric and Walkley-Black methods, respectively. Figures of merit such as sensitivity, detection and quantification limits, accuracy and precision were evaluated. Samples were differentiated by their provenance, and the quality of the prediction model shows that EDXRF combined with multivariate analysis is a promising methodology to fulfil the lack of rapid and accurate analytical methods for the assessment of OM and TOC concentrations in agricultural soils.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.apradiso.2017.09.008 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Diversity and Distribution of Methane Functional Microorganisms in Sedimentary Columns of Hongfeng Reservoir in Different Seasons.
Curr Microbiol
December 2024
Department of Environmental Science and Engineering, School of Environmental and Chemical Engineering, Shanghai University, 150#, 99 Shangda Road, Shanghai, 200444, China.
Freshwater ecosystem is a significant natural source of CH emission in the atmosphere. To fully understand the dynamics of methane emissions in reservoirs, it is essential to grasp the temporal and vertical distribution patterns, as well as the factors that influence the methanogenic bacterial communities within the sediments. This study investigates the methane dynamics, carbon isotope fractionation (δCH), and abundance of functional microorganisms along the geochemical gradient in the in situ sedimentary column of Hongfeng Reservoir (China).
View Article and Find Full Text PDFReverse-engineered Electro-Fenton for the selective synthesis of oxalic or oxamic acid through the degradation of acetaminophen: A novel green electrocatalytic refinery approach.
Water Res
December 2024
Instituto de Energías Renovables, Universidad Nacional Autónoma de México (IER-UNAM). Priv. Xochicalco S/N, Col. Centro, Temixco, Morelos, 62580, Mexico.
The Electro-Fenton process (EF) has been conventionally applied to efficiently degrade refractory and/or toxic pollutants. However, in this work, EF was used as a reverse engineering tool to selectively synthesize highly value-added products (oxalic or oxamic acid) through the degradation of the model pollutant acetaminophen, a widely used analgesic and antipyretic drug. It was found that the production of either oxalic or oxamic acid is dictated by the applied current density.
View Article and Find Full Text PDFBagasse modification of red mud for efficient photocatalytic degradation of real dye wastewater: An utilization attempt for massive waste.
Environ Res
December 2024
School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, China. Electronic address:
The high concentration of metal compounds found in red mud (RM) can serve as cost-effective raw materials for photo Fenton catalysts in the treatment of organic dye wastewater. In this study, RM was modified with bagasse using a hydrothermal method to prepare a photo-Fenton catalyst. The degradation efficiency of Rhodamine (RhB) solution under different conditions was evaluated.
View Article and Find Full Text PDFPronounced Diel Cycling of Dissolved Carbohydrates and Amino Acids in the Surface Ocean and across Diverse Regimes.
Environ Sci Technol
December 2024
GEOMAR, Helmholtz Centre for Ocean Research Kiel, Kiel 24105, Germany.
The metabolism of phytoplankton cells is synchronized with the diel light cycle. Likewise, associated heterotrophic bacteria adjust their diel expression of transporter- and catabolism-related genes to target the dissolved organic matter released by the phytoplankton cell. Dissolved combined carbohydrates (DCCHO) and dissolved amino acids (DAA) are major phytoplankton products and bacterial substrates.
View Article and Find Full Text PDFChloride Interferences in Wet Chemical Oxidation Measurements: Plausible Mechanisms and Implications.
ACS ES T Water
December 2024
Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States.
Wet chemical oxidation (WCO) methods measure total organic carbon (TOC) in aqueous solutions through the formation and detection of carbon dioxide (CO). Prior research documents chloride (Cl) interference during WCO. However, the mechanism that determines WCO interference is not established.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!