| 水体中天然有机质在有限光照下还原三价金 |
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| 作者姓名： | 刘子露 马家海 |
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| 作者单位： | 中国科学院大学化学与化学工程学院, 北京 100049 |
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| 基金项目： | Supported by the National Natural Science Foundation of China(21377126,41573115) |
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| 摘 要： | 研究在短时间模拟太阳光照射或黑暗条件下，标准天然有机质Suwannee River腐殖酸将三价金离子（Au3+）还原成金纳米颗粒（AuNPs）的事实.研究结果表明，活泼的腐殖酸对还原金离子这一反应在水体中广泛存在，在极端缺乏光照的水体（如地下水、溶洞水等水域）中也可进行.Pony Lake富里酸和Aldrich腐殖酸的对比试验表明，不同天然有机质在缺乏光照条件下还原Au3+的能力有差异.
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| 关 键 词： | 天然有机质 三价金离子 金纳米颗粒 |
| 收稿时间： | 2016-03-08 |
Aqueous reduction of Au3+ by natural organic matter under light-limited irradiation |
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| Authors: | LIU Zilu MA Jiahai |
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| Institution: | School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | In this study, we find that one standard natural organic matter (NOM) called Suwannee River humic acid (SRHA) reduces Au3+ to Au nanoparticles under short-time simulated sunlight irradiation or in full-course darkness. The results suggest that the reduction of metal ions by the active NOM occurs widely, even in special aquatic environments that lack sunlight exposure, such as underground and cavern water. Moreover, analogous experiments covering other two kinds of NOMs, Pony Lake fulvic acid (PLFA) and Aldrich humic acid (AHA), demonstrate that NOMs behave differently in reduction of Au3+ with limited irradiation. |
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| Keywords: | natural organic matter Au3+" target="_blank">3+')">Au3+ Au nanoparticle |
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