水稻土中氧化还原过程的研究Ⅵ.络合态低铁的测定
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STUDIES ON OXIDATION-REDUCTION PROCESSES IN PADDY SOILS Ⅵ. DETERMINATION OF FERROUS IRON CHELATED BY SOIL ORGANIC MATTER
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    摘要:

    关于土壤中格合态低铁的测J定,现在还没有一个满意的提取方法。自从Bremner等[1]建议用焦磷酸纳作为土壤中格合态铁的提取剂以后,它就被广泛地应用于土壤学的研究工作中;最近,Mandal[2]并用它来提取水稻土中的格合态铁。

    Abstract:

    An extracting solution containing 0.5% α-α'-dipyridyl and 2 N barium chloride buffered at pH 7.0 with about 3% barium acetate was proposed for the determination of ferrous iron chelated by soil organic matter in paddy soils. It was found that the solution can extract the chelated, water-soluble and exchangeable ferrous iron,leaving the ferrous precipitates and ferric compounds unattacked. Two extractions with soil:solution ratio of 1:20 and stirring for 30 minutes are found satisfactorily. The amount of ferrous iron extracted correlated fairly well with the organic matter content of the soil.No chelated iron was found in the extractant from water-logged soils after having organic matter destroyed previously by hydrogen peroxide.

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保学明,刘志光,于天仁.水稻土中氧化还原过程的研究Ⅵ.络合态低铁的测定[J].土壤学报,1964,12(2):216-221. BAO H&#;O-MING, LIU CHI-KUANG, Y&#; TIEN-JEN. STUDIES ON OXIDATION-REDUCTION PROCESSES IN PADDY SOILS Ⅵ. DETERMINATION OF FERROUS IRON CHELATED BY SOIL ORGANIC MATTER[J]. Acta Pedologica Sinica,1964,12(2):216-221.

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  • 在线发布日期: 2013-02-25
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