Effects of oxalate and humic acid on arsenate sorption by and desorption from a Chinese red soil
文献类型：期刊论文
| 作者 | Luo, Lei; Zhang, Shuzhen; Shan, Xiao-Quan; Zhu, Yong-Guan |
| 刊名 | WATER AIR AND SOIL POLLUTION
 |
| 出版日期 | 2006 |
| 卷号 | 176期号:2015-01-04页码:269-283 |
| 关键词 | arsenate sorption desorption oxalate humic acid kinetics |
| 英文摘要 | Studies on arsenate (As(V)) sorption and desorption have been mainly limited to soil minerals and sorption and desorption reactions in whole soils are poorly understood. In this study the sorption of As(V) by and phosphate-induced desorption from a Chinese red soil were studied in the presence of oxalate and humic acid (HA). Arsenate was strongly sorbed mainly through ligand exchange reactions on the soil. Arsenate sorption decreased in the presence of oxalate or HA. Oxalate and HA influenced As(V) sorption mainly by competing for sorption sites and reducing sorption sites, and oxalate could also decrease sorption through dissolving clay minerals. Oxalate and HA could also facilitate As(V) desorption from the soil. Both sorption and desorption kinetics were two stage processes. Sorption kinetics conducted from 0.2-840 h showed that As(V) sorption increased with increasing residence time. Sorption equilibrium was retarded and the maximum sorption decreased in the presence of oxalate or HA. Phosphate-induced desorption kinetics conducted on the soil with 24 h and 840 h of sorption equilibrium time showed a significant effect of equilibrium time on As(V) desorption. The presence of oxalate or HA during the sorption process resulted in more As(V) desorption. Due to the degradation of oxalate, soil treated with oxalate and with a sorption equilibrium time of 840 h showed no significant difference in desorption kinetics from untreated soil. |
| WOS记录号 | WOS:000240318000017 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22874]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Luo, Lei,Zhang, Shuzhen,Shan, Xiao-Quan,et al. Effects of oxalate and humic acid on arsenate sorption by and desorption from a Chinese red soil[J]. WATER AIR AND SOIL POLLUTION,2006,176(2015-01-04):269-283. |
| APA | Luo, Lei,Zhang, Shuzhen,Shan, Xiao-Quan,&Zhu, Yong-Guan.(2006).Effects of oxalate and humic acid on arsenate sorption by and desorption from a Chinese red soil.WATER AIR AND SOIL POLLUTION,176(2015-01-04),269-283. |
| MLA | Luo, Lei,et al."Effects of oxalate and humic acid on arsenate sorption by and desorption from a Chinese red soil".WATER AIR AND SOIL POLLUTION 176.2015-01-04(2006):269-283. |
入库方式： OAI收割
来源：生态环境研究中心
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