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首页> 外文期刊>Environmental Science & Technology >Speciation of Phosphorus Zinc and Copper in Soil and Water- Dispersible Colloid Affected by a Long-term Application of Swine Manure Compost
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Speciation of Phosphorus Zinc and Copper in Soil and Water- Dispersible Colloid Affected by a Long-term Application of Swine Manure Compost

机译：长期施用猪粪堆肥影响土壤和水分散性胶体中磷锌和铜的形态

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摘要

The objective of this study was to investigate the concentration and chemical species of Zn, Cu, and P in the bulk soil and water-dispersible colloid (WDC) fraction collected from a field where swine manure (SM) compost has been continually applied for 23 years. A filtration and ultracentrifugation process was used to separate and collect WDC (20-1000 nm) from the soil. The continual application of SM increased soil P from 1.6 to 4.5 g kg(-1), Zn from 109 to 224 mg kg(-1), and Cu from 87 to 95 mg kg(-1) for 23 years. The continual SM compost application also enhanced the formation of soil WDC in which Zn (215 mg kg(-1)) and Cu (62 mg kg(-1)) were highly accumulated and P (25 g kg(-1)) was greater than in the bulk soil. According to the result of X-ray absorption spectroscopy (XAS), the continual application of SM compost increased P associated with Fe hydroxides in the soil and WDC fraction. Iron K-edge XAS revealed the dominance of goethite and ferrihydrite in the WDC fraction, suggesting that P was bound to these (oxy)hydroxides. Copper K-edge XAS determined the dominance of Cu(II) associated with humus in the soil and WDC fraction. For Zn species in the SM-compost-applied soil, hopeite and Zn associated with humus were accumulated in the bulk soil, whereas Zn associated with humus was the primary species in the WDC fraction. Our study suggests that the formation of organic complexes in the WDC fraction could enhance the mobility of Zn and Cu as the repeated application of SM compost continues.
机译：本研究的目的是调查从连续施用猪粪（SM）堆肥的田地中收集的散装土壤和水分散性胶体（WDC）组分中Zn，Cu和P的浓度和化学物种23年份。使用过滤和超速离心过程从土壤中分离并收集WDC（20-1000 nm）。连续施用SM长达23年，土壤P从1.6增至4.5 g kg（-1），Zn从109增至224 mg kg（-1），Cu从87增至95 mg kg（-1）。连续施用SM堆肥还增强了土壤WDC的形成，其中锌（215 mg kg（-1））和铜（62 mg kg（-1））高度积累，而P（25 g kg（-1））高。大于散装土壤。根据X射线吸收光谱法（XAS）的结果，连续施用SM堆肥会增加土壤中铁氢氧化物和WDC组分中的P。铁K边缘XAS揭示了WDC馏分中针铁矿和水铁矿的优势，这表明P与这些（羟基）氢氧化物结合。铜质K-边缘XAS确定了土壤中腐殖质相关联的Cu（II）和WDC组分的优势。对于施用SM肥料的土壤中的锌物种，在腐殖质土壤中积累了腐殖质和腐殖质相关的锌和锌，而腐殖质相关的Zn是WDC组分中的主要物种。我们的研究表明，随着SM堆肥的不断重复使用，在WDC馏分中形成有机配合物可以增强Zn和Cu的迁移率。

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  • 来源
    《Environmental Science & Technology》 |2018年第22期|13270-13278|共9页
  • 作者

    Yamamoto Kosuke; Hashimoto Yohey; Kang Jihoon; Kobayashi Kazuki;

  • 作者单位

    Tokyo Univ Agr & Technol, Bioapplicat & Syst Engn, Koganei, Tokyo 1848588, Japan;

    Univ Texas Rio Grande Valley, Sch Earth Environm & Marine Sci, 1201 West Univ Dr, Edinburg, TX 78539 USA;

  • 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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