| Lead phytoextraction from contaminated soil with high-biomass plant species | |
| Shen, ZG; Li, XD; Wang, CC; Chen, HM; Chua, H | |
| 刊名 | JOURNAL OF ENVIRONMENTAL QUALITY
 |
| 2002-11-01 | |
| 卷号 | 31期号:6页码:1893-1900 |
| ISSN号 | 0047-2425 |
| 通讯作者 | Li, XD(cexdli@polyu.edu.hk) |
| 英文摘要 | In this study, cabbage [Brassica rapa L. subsp. chinensis (L.) Hanelt cv. Xinza No 1], mung bean [ Vigna radiata (L.) R. Wilczek var. radiata cv. VC-3762], and wheat (Triticum aestivum L. cv. Altas 66) were grown in Pb-contaminated soils. Application of ethylenediaminetetraacetic acid (EDTA) (3.0 mmol of EDTA/kg soil) to the soil. significantly increased the concentrations of Ph in the shoots and roots of all the plants. Lead concentrations in the cabbage shoots reached 5010 and 4620 mg/kg dry matter on Days 7 and 14 after EDTA application, respectively. EDTA was the best in solubilizing soil-bound Ph and enhancing Ph accumulation in the cabbage shoots among various chelates (EDTA, diethylenetriaminepentaacetic acid [DTPA], hydroxyethylenediaminetriacetic acid [HEDTA], nitrilotriacetic acid [NTA], and citric acid). Results of the sequential chemical extraction of soil samples showed that the Ph concentrations in the carbonate-specifically adsorbed and Fe-Mn oxide phases were significantly decreased after EDTA treatment. The results indicated that EDTA solubilized Ph mainly from these two phases in the soil. The relative efficiency of EDTA enhancing Ph accumulation in shoots (defined as the ratio of shoot Ph concentration to EDTA concentration applied) was highest when 1.5 or 3.0 mmol EDTA/kg soil was used. Application of EDTA in three separate doses was most effective in enhancing the accumulation of Ph in cabbage shoots and decreased mobility of Ph in soil compared with one- and two-dose application methods. This approach could help to minimize the amount of chelate applied in the field and to reduce the potential risk of soluble Ph movement into ground water. |
| 收录类别 | SCI |
| WOS关键词 | HYPERACCUMULATOR THLASPI-CAERULESCENS ; BARLEY HORDEUM-VULGARE ; CHELATING-AGENTS ; INDIAN MUSTARD ; HEAVY-METALS ; SEQUENTIAL EXTRACTION ; BRASSICA-JUNCEA ; PHYTOREMEDIATION ; ZINC ; EDTA |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| 出版者 | AMER SOC AGRONOMY |
| WOS记录号 | WOS:000181953300016 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2559187 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Li, XD |
| 作者单位 | 1.Hong Kong Polytech Univ, Dept Civil & Struct Engn, Kowloon, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China 3.Nanjing Agr Univ, Dept Agron, Nanjing 210095, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen, ZG,Li, XD,Wang, CC,et al. Lead phytoextraction from contaminated soil with high-biomass plant species[J]. JOURNAL OF ENVIRONMENTAL QUALITY,2002,31(6):1893-1900. |
| APA | Shen, ZG,Li, XD,Wang, CC,Chen, HM,&Chua, H.(2002).Lead phytoextraction from contaminated soil with high-biomass plant species.JOURNAL OF ENVIRONMENTAL QUALITY,31(6),1893-1900. |
| MLA | Shen, ZG,et al."Lead phytoextraction from contaminated soil with high-biomass plant species".JOURNAL OF ENVIRONMENTAL QUALITY 31.6(2002):1893-1900. |
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