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首页> 外文期刊>Environmental Science & Technology >Formations of Hydroxyapatite and Inositol Hexakisphosphate in Poultry Litter during the Composting Period: Sequential Fractionation, P K-edge XANES and Solution ~(31)P NMR Investigations
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Formations of Hydroxyapatite and Inositol Hexakisphosphate in Poultry Litter during the Composting Period: Sequential Fractionation, P K-edge XANES and Solution ~(31)P NMR Investigations

机译：堆肥期间家禽凋落物中羟基磷灰石和肌醇六磷酸盐的形成：顺序分馏，PK边缘XANES和溶液〜（31）P NMR研究

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摘要

Little is known about how the solubility and chemical speciation of phosphorus (P) in poultry litters are altered during the composting period. This study investigated the quantitative and qualitative changes in organic P (P_o) and inorganic P (P_i) compositions in poultry litters during the seven-day composting period using sequential extraction in combination with P K-edge X-ray absorption near-edge structure (XANES) and solution ~(31)P nuclear magnetic resonance (NMR) spectroscopy. The result of sequential extraction illustrated that the significant decrease of H_2O-P by 55% in poultry litters occurred concomitantly with the increase of HCl-P_i and HCl-P_o during the composting period (p ＜0.05). X-ray diffraction results for poultry litter samples showed three distinct peaks indicative of hydroxyapatite. Phosphorus K-edge XANES confirmed the increase of hydroxyapatite during the composting period, corresponding to the increase of HCl-P_i determined by the sequential extraction. The NaOH-EDTA extraction for solution ~(31)P NMR revealed that myo-inositol hexakisphosphate (IHP) constituted about 80% of phosphate monoesters and was increased from 16 to 28% in the poultry litter during the composting period. The combined applications of chemical extraction and molecular-spectroscopic techniques determined that water-soluble P in poultry litter was transformed into less soluble phases, primarily hydroxyapatite and IHP, during the composting period.
机译：在堆肥期间如何改变家禽垫料中磷（P）的溶解度和化学形态知之甚少。这项研究调查了家禽垫料在7天堆肥期间有机磷（P_o）和无机磷（P_i）组成的数量和质量变化，采用顺序提取结合P K边缘X射线吸收近边缘结构（ XANES）和溶液〜（31）P核磁共振（NMR）光谱。连续抽提的结果表明，堆肥期间家禽垫料中H_2O-P显着下降了55％，这与堆肥期间HCl-P_i和HCl-P_o的增加同时发生（p ＜0.05）。家禽垫料样品的X射线衍射结果显示出三个不同的峰，表明羟基磷灰石。磷钾边缘XANES证实了堆肥期间羟基磷灰石的增加，这与通过顺序萃取确定的HCl-P_i的增加相对应。溶液〜（31）P NMR的NaOH-EDTA萃取表明，肌醇六磷酸（IHP）构成了磷酸单酯的约80％，并且在堆肥期间家禽垫料中的磷酸肌醇从16％增加到28％。化学提取和分子光谱技术的结合应用确定了在堆肥期间，家禽垫料中的水溶性P被转化为难溶相，主要是羟基磷灰石和IHP。

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  • 来源
    《Environmental Science & Technology》 |2014年第10期|5486-5492|共7页
  • 作者

    Yohey Hashimoto; Akira Takamoto; Ren Kikkawa; Keiichi Murakami; Noriko Yamaguchi;

  • 作者单位

    Department of Bioapplications and Systems Engineering, Tokyo University of Agriculture and Technology 2-24-16 Nakamachi,Koganei, Tokyo, 184-8588 Japan;

    Department of Bioapplications and Systems Engineering, Tokyo University of Agriculture and Technology 2-24-16 Nakamachi,Koganei, Tokyo, 184-8588 Japan;

    Department of Bioresource Science, Mie University 1577 Kurima-machiya, Tsu-city, Mie, 514-8507 Japan;

    Mie Prefecture Department of Agriculture, Fisheries, Commerce and Industry 13 Komei, Tsu-city, Mie 514-8570 Japan;

    National Institute for Agro-Environmental Sciences, Soil Environment Division 3-1-3 Kannondai, Tsukuba, Ibaraki, 305-8604 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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