Nobuhide Fujitake

Online Soil Column Chromatography Coupled with Mass Spectrometry for Studying Sorption of Per- and Polyfluoroalkyl Substances and Other Organic Contaminants

Anh T. Ngoc, Nobuhide Fujitake, Satoshi Endo

Soil column chromatography (SCC) has been used to investigate the sorption of organic compounds in soils.However, its application has been restricted to compounds with UV or fluorescence activity, excluding many environmentally relevant compounds including numerous per-and polyfluoroalkyl substances (PFAS).Here, SCC was directly …

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Full‐pattern fitting of X‐ray powder diffraction data to determine allophane and organic matter contents in soils

浜口麻耶, Kohei Kurokawa, Atsushi Nakao, Masayuki Tani et autres

Abstract Full‐pattern fitting of X‐ray powder diffraction (XRPD) data using reference materials has attracted increasing attention as a high‐throughput method to determine the contents of long‐range‐ordered (i.e., crystalline) materials in soils. We hypothesized that this XRPD method can also be used to …

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Chemical characterization of Scottish peat using evolved gas analysis-mass spectrometry

Xue Chu, Nobuhide Fujitake, Shintaro Yanaka, Yasuro Fuse

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Solid-phase fluorescence excitation-emission matrix spectroscopy of soil, fulvic acid fractions, and clay mineral complexes: Evidence from red shift of fluorescence maxima associated with aggregation

Yuki Nakaya, Ryuichi Tamori, Nobuhide Fujitake, Satοru Nakashima et autres

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Organo-metal coprecipitation contributes to stable organic carbon fraction in mangrove soil

Kota Hamada, Nada Yimatsa, Toshiyuki Ohtsuka, Nobuhide Fujitake et autres

• Extractable metals (Al, Fe, Ca, Mg) contributions on mangrove OC were studied. • Organo-metal coprecipitates are the best predictors of OC content in HF. • Stabilization of mangrove soil OC is enhanced by organo-metal coprecipitation. • Rapid inclusion of fresh mangrove-derived …

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Organo-metal coprecipitation contributes to stable organic carbon fraction in mangrove soil

Kota Hamada, Nada Yimatsa, Toshiyuki Ohtsuka, Nobuhide Fujitake et autres

Abstract Prediction of the impact of anthropogenic disturbances and global change on organic carbon (OC) pools in mangrove soils requires a detailed understanding of the mechanisms underlying OC stabilization. Using density fractionation to physically separate OC fractions with varying degrees of mineral …

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Biomass recovery of coastal young mangrove plantations in Central Thailand

Toshiyuki Ohtsuka, Suthathip Umnouysin, Vilanee Suchewaboripont, Nada Yimatsa et autres

Abstract Around one-third of the world’s most carbon-rich ecosystems, mangrove forests, have already been destroyed in Thailand owing to coastal development and aquaculture. Improving these degraded areas through mangrove plantations can restore various coastal ecosystem services, including CO2 absorption and protection against …

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Functional organic matter components in mangrove soils revealed by density fractionation

Morimaru Kida, Kota Hamada, Toshiyuki Ohtsuka, Nobuhide Fujitake et autres

The mechanisms underlying stabilization of soil organic matter (SOM) in vegetated coastal ecosystems, including mangrove forests, are poorly understood, limiting our ability to predict the consequences of disturbances. Here, we introduce density fractionation to mangrove soils to identify the distribution and properties …

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Functional organic matter components in mangrove soils revealed by density fractionation

Kota Hamada, Toshiyuki Ohtsuka, Nobuhide Fujitake, Toshihiro Miyajima et autres

The mechanisms underlying stabilization of soil organic matter (SOM) in vegetated coastal ecosystems, including mangrove forests, are poorly understood, limiting our ability to predict the consequences of disturbances. Here, we introduce density fractionation to mangrove soils to identify the distribution and properties …

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Chemical Characterization of Peat from Scotland by Evolved Gas Analysis Gas Chromatography-Mass Spectrometry

N. Takeda, Xue Chu, Nobuhide Fujitake, Shintaro Yanaka et autres

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Functional organic matter components in mangrove soils revealed by density fractionation

Kota Hamada, Toshiyuki Ohtsuka, Nobuhide Fujitake, Toshihiro Miyajima et autres

The mechanisms underlying stabilization of soil organic matter (SOM) in coastal ecosystems, including mangrove forests, are poorly understood, limiting our ability to predict the consequences of disturbances. Here, we introduce density fractionation to mangrove soils to identify the distribution and properties of …

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Spatial variation of soil characteristics affected by biochar materials from traditional slash and burn agriculture in Sabah, Malaysia

Akari Kishimoto, Rintaro Kinoshita, Nobuhide Fujitake, Mitsuru Osaki et autres

Traditional slash-and-burn agriculture has been practiced for centuries in Southeast Asia. Our past study has identified distinctly different soil profile characteristics over a very short distance within a sloping field. In order to accurately estimate the potential of the traditional slash and …

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