| 有机物料腐解过程胡敏酸与Fe~(2+)的络合特征 |
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| 引用本文： | 王旭东,耿会立,李立敏,关文玲.有机物料腐解过程胡敏酸与Fe~(2+)的络合特征[J].土壤通报,2003,34(2):90-92. |
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| 作者姓名： | 王旭东 耿会立 李立敏 关文玲 |
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| 作者单位： | 西北农林科技大学,陕西,杨陵,712100 |
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| 基金项目： | 国家基金(39800093)资助课题部分内容 |
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| 摘 要： | 采用玉米秸、绿豆秸、猪粪、羊粪4种有机物料进行腐解试验,研究了腐解过程形成的胡敏酸在不同条件下(pH、离子强度)与Fe2+的络合特征,结果表明,在相同条件下,粪肥腐解形成的胡敏酸与Fe2+的络合能力相对比秸秆的强。腐解过程胡敏酸与Fe2+的络合能力呈动态变化,胡敏酸与Fe2+的络合稳定常数与其羧基、总酸度成极显著正相关。在碱性条件下(pH=8.0),各有机物料腐解形成的胡敏酸与Fe2+的络合能力下降。
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| 关 键 词： | 有机物料 腐解试验 胡敏酸 络合特征 Fe2+ |
| 文章编号： | 0564-3945(2003)02-0090-03 |
| 修稿时间： | 2002年1月30日 |
Complexiation of Humic Acid Formed by Organic Materials with Fe2+ |
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| Abstract: | In this paper, humic acids were extracted from four kinds of organic materials during decaying process. The properties of humic acids and the complex characteristics of humic acids with Fe2+ were researched. The main results showed that under the same condition ,the value of log k(complex stability constant) for manure was biger than that for straw. Complex stability constant of humic acids with Fe2+was affected by the factor of pH and ion strength. |
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| Keywords: | Organic material Decaying experiment Humic acid Complex Fe~(2 ) |
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