Free cupric ions in contaminated agricultural soils around a copper mine in eastern nanjing city, china
文献类型：期刊论文
| 作者 | Luo Xiao-san; Zhou Dong-mei; Wang Yu-jun |
| 刊名 | Journal of environmental sciences-china
 |
| 出版日期 | 2006 |
| 卷号 | 18期号:5页码:927-931 |
| 关键词 | Copper ion selective electrode (cu-ise) Free metal ion activity Soil solution Metal speciation Bioavailability |
| ISSN号 | 1001-0742 |
| 通讯作者 | Zhou dong-mei(dmzhou@issas.ac.cn) |
| 英文摘要 | To determine the environmental free metal ion activity was a recent hot issue. a method to measure low-level free cupric ion activity in soil solution extracted with 0.01 mol/l kno3 was developed by using cupric ion-selective electrode (ise) and calibrating with cu-buffer solution. three copper buffers including iminodiacetic acid (ida), ethylenediamine (en), and glycine (gly) were compared for calibrating the cu-ise curves in the range of free cupric ions (pcu(2+)) 7-13. the cu-en buffer showed the best electrode response and thus was applied as the calibration buffer. the pcu(2+) of 39 contaminated agricultural soils around a copper mine was measured, ranging from 5.03 to 9.20. most cu in the soil solutions was found to be complexed with dissolved soil organic matters, averaging 98.1%. the proportion of free cu2+ ions in the soil solutions decreased with the increasing of solution ph. soluble cu and free cu2+ ions concentrations were analyzed by multiple linear regressions to evaluate the effects of soil properties on metal levels and speciation. the results showed that soil solution ph was the most significant factor influencing pcu(2+) (with r-2 value of 0.76), while not important for the soluble cu concentration. |
| WOS关键词 | NATURAL ORGANIC-MATTER ; SEQUENTIAL EXTRACTION ; CHEMICAL SPECIATION ; SELECTIVE ELECTRODE ; METAL SPECIATION ; ACTIVITY MODEL ; HEAVY-METALS ; TRACE-METALS ; BIOAVAILABILITY ; TOXICITY |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000240445400016 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2378876 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhou Dong-mei |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Luo Xiao-san,Zhou Dong-mei,Wang Yu-jun. Free cupric ions in contaminated agricultural soils around a copper mine in eastern nanjing city, china[J]. Journal of environmental sciences-china,2006,18(5):927-931. |
| APA | Luo Xiao-san,Zhou Dong-mei,&Wang Yu-jun.(2006).Free cupric ions in contaminated agricultural soils around a copper mine in eastern nanjing city, china.Journal of environmental sciences-china,18(5),927-931. |
| MLA | Luo Xiao-san,et al."Free cupric ions in contaminated agricultural soils around a copper mine in eastern nanjing city, china".Journal of environmental sciences-china 18.5(2006):927-931. |
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来源：中国科学院大学
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