| 草酸和酒石酸促进花岗岩中钾释放的实验研究 |
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| 引用本文： | 王静婷,姚芩,李福春,关雪晴,吴昊,杨超光,李学林.草酸和酒石酸促进花岗岩中钾释放的实验研究[J].土壤通报,2011(2):320-324. |
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| 作者姓名： | 王静婷 姚芩 李福春 关雪晴 吴昊 杨超光 李学林 |
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| 作者单位： | 南京农业大学资源与环境科学学院; |
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| 基金项目： | 南京农业大学“大学生科研训练”项目(0707A07); 国家自然科学基金资助项目(40573057)资助 |
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| 摘 要： | 利用浸提实验研究了草酸和酒石酸作用下花岗岩中钾的释放量与低分子量有机酸种类、浓度和时间的关系,同时讨论了释放出来的钾的可能来源。研究结果表明:草酸浸提钾的能力强于酒石酸,在相同的条件下草酸浸提的钾量是酒石酸的2~27倍;在0.005~0.500 mol L-1浓度范围内,浸提的钾量随着有机酸浓度的升高而增大;浸提的钾量随着浸提时间的延长而增大,最后趋于稳定;在实验过程中,花岗岩的矿物组成未发生明显的变化,说明进入到溶液中的钾并非来自晶格内部,很有可能是来自于正长石、白云母表面及其边缘断键。
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| 关 键 词： | 草酸 酒石酸 花岗岩 钾 释放 |
Experimental Researches on Effect of Oxalic Acid and Tartaric Acid on Potassium Release from Granite |
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| WANG Jing-ting,YAO Qin,LI Fu-chun,GUAN Xue-qing,WU Hao,YANG Chao-guang,LI Xue-lin.Experimental Researches on Effect of Oxalic Acid and Tartaric Acid on Potassium Release from Granite[J].Chinese Journal of Soil Science,2011(2):320-324. |
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| Authors: | WANG Jing-ting YAO Qin LI Fu-chun GUAN Xue-qing WU Hao YANG Chao-guang LI Xue-lin |
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| Institution: | WANG Jing-ting,YAO Qin,LI Fu-chun,GUAN Xue-qing,WU Hao,YANG Chao-guang,LI Xue-lin(Department of Resource and Environment Science,Nanjing Agricultural University,Nanjing 210095,China) |
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| Abstract: | Extraction experiments have been used to research the relationship between the potassium release from granite and the kind,concentration and extraction time of low-molecular-weight organic acid under the effect of oxalic acid and tartaric acid,meanwhile discussing the possible origin of released potassium.The results indicated that oxalic acid extracted 2 to 27 times of potassium than tartaric acid in the same condition.In concentration rang of 0.005-0.500 mol L-1,the contents of extracted potassium increas... |
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| Keywords: | Oxalic acid Tartaric acid Granite Potassium Release |
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