Search Results - "Takesako, Hiroshi"

Isolation and purification of hydrophilic fulvic acids by precipitation by Hiradate, Syuntaro, Yonezawa, Takuya, Takesako, Hiroshi

“…Fulvic acids play an important role in the behavior of metals and hydrophobic organic chemicals in soil and water environments. The isolation and purification…”
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Fine fractionation and purification of the fulvic acid fraction using adsorption and precipitation procedures by Hiradate, Syuntaro, Yonezawa, Takuya, Takesako, Hiroshi

“…A new scheme for fine fractionating and purifying a crude fulvic acid fraction was proposed. The fractionation procedure includes an adsorption process of the…”
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Effect of cation-exchange pretreatment of aqueous soil extracts on the gas chromatographic–mass spectrometric determination of nerve agent hydrolysis products after tert.-butyldimethylsilylation by Kataoka, Mieko, Tsunoda, Noriko, Ohta, Hikoto, Tsuge, Kouichiro, Takesako, Hiroshi, Seto, Yasuo

“…The efficency of pretreatment of aqueous soil extracts using a cation-exchange resin has been investigated by gas chromatographic–mass spectrometric (GC–MS)…”
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Effect of Pedological Characteristics on Aqueous Soil Extraction Recovery and tert-Butyldimethylsilylation Yield for Gas Chromatography−Mass Spectrometry of Nerve Gas Hydrolysis Products from Soils by Kataoka, Mieko, Tsuge, Kouichiro, Takesako, Hiroshi, Hamazaki, Tadao, Seto, Yasuo

“…Detection and identification of alkyl methylphosphonate (RMPA) and methylphosphonate (MPA) are performed to verify the existence of nerve gases by gas…”
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Development of a nitrate ion-selective electrode based on an Urushi matrix membrane and its application to the direct measurement of nitrate-nitrogen in upland soils by Ito, Satoshi, Baba, Keiko, Asano, Yasukazu, Takesako, Hiroshi, Wada, Hiroko

“…A solid-state nitrate ion-selective electrode based on an Urushi matrix membrane was developed. Urushi, a natural oriental lacquer, has excellent mechanical…”
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