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| 基于中性盐提取的土壤重金属固液分配与自由态金属离子浓度测定 | |
| 引用本文： | 张红振,骆永明,宋静,余海波,吴龙华,翁丽萍,赵其国.基于中性盐提取的土壤重金属固液分配与自由态金属离子浓度测定[J].环境科学学报,2010,30(1):124-132. |
| 作者姓名： | 张红振 骆永明 宋静 余海波 吴龙华 翁丽萍 赵其国 |
| 作者单位： | 1. 中国科学院土壤环境与污染修复重点实验室(南京土壤研究所),南京210008;中国科学院研究生院,北京100049 2. 安徽师范大学,生命科学学院,芜湖241000 3. Department of Soil Quality, Wageningen University, Wageningen, The Netherlands, 6700 EC |
| 基金项目： | 国家自然科学基金创新群体基金(No.50721006);;国家重点基础研究发展计划(973)项目(No.2006CB403402-3);;国家水专项(No.2008ZX07207-006-04);;上海市重点学科项目(No.B604)~~ |
| 摘 要： | 采用0.01mol·L-1CaCl2、0.002mol·L-1Ca(NO3)2和纯水(UPW)3种常用提取剂对我国南方两种典型农田重金属污染土壤进行提取试验.同时,应用土壤重金属固液分配多表面模型来预测提取液中重金属含量,结合道南膜技术(DMT)测定Ca(NO3)2提取液中自由态金属离子浓度,并与ECOSAT模型计算值进行比较.结果表明,提取剂中Ca2+浓度增加能显著提高土壤重金属溶出率,而提取液pH、溶解态有机碳(DOC)浓度却随溶液Ca2+浓度增加而降低.多表面模型(Multi-Surface Model)对大部分提取液金属浓度有较好的预测效果,部分土样提取液Cu、Pb、Zn浓度的预测效果较差.DMT测定的Ca(NO3)2提取液自由态重金属浓度与模型计算值较为一致,能够较准确地测定土壤溶液自由态重金属离子浓度. |
| 关 键 词： | 水平潜流人工湿地 示踪剂试验 水力停留时间分布 水力效率 布水方式 |
| 收稿时间： | 4/1/2009 12:00:00 AM |
| 修稿时间： | 8/31/2009 9:44:29 AM |
Solid-solution partitioning of soil heavy metals and free-ion concentration measurement in neutral salt extractions |
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| ZHANG Hongzhen,LUO Yongming,SONG Jing,YU Haibo,WU Longhu,WENG Liping and ZHAO Qiguo.Solid-solution partitioning of soil heavy metals and free-ion concentration measurement in neutral salt extractions[J].Acta Scientiae Circumstantiae,2010,30(1):124-132. | |
| Authors: | ZHANG Hongzhen LUO Yongming SONG Jing YU Haibo WU Longhu WENG Liping and ZHAO Qiguo |
| Institution: | SONG Xinshan1,ZHANG Tao1,YAN Denghua2,CHEN Yan1,YUAN Ruixia11. Environmental Science , Engineering College,Donghua University,Shanghai 2016202. China Institute of Water Resources , Hydropower Research,Beijing 100044 |
| Abstract: | According to tracer tests,four kinds of horizontal subsurface flow constructed wetlands with different inflow configurations (i.e. common horizontal flow,wave flow,diagonal flow,multiple point inflow) have different hydraulic residence time distribution density curves. Nominal retention time,mean retention time and peak retention time are calculated,and hydraulic efficiencies of constructed wetlands with different inflow configurations are calculated based on correlations among the retention times. The logn... |
| Keywords: | horizontal subsurface flow constructed wedands (HSSFCWs) tracer teats hydraulic residence time distribution (RTD) hydraulic efficiency inflow configuration |
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