Phosphate-induced lead immobilization from different lead minerals in soils under varying pH conditions
文献类型：期刊论文
| 作者 | Cao, Xinde1; Ma, Lena Q.1; Singh, Satya P.3; Zhou, Qixing2 |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2008-03-01 |
| 卷号 | 152期号:1页码:184-192 |
| 关键词 | Immobilization Lead Minerals Contaminated Soil Phosphate Ph |
| ISSN号 | 0269-7491 |
| DOI | 10.1016/j.envpol.2007.05.008 |
| 英文摘要 | This study investigated phosphate-induced lead immobilization from different Pb minerals in soils under varying pHs. Four soils were used, including one Pb-contaminated soil (NC-Soil) and three soils spiked with litharge (PbO), cerrusite (PbCO3), or anglesite (PbSO4), referred to as PbO-soil. PbCO3-soil, and PbSO4-soil, respectively. The soils were equilibrated with KCl and Ca(H2PO4)(2)center dot H2O under pH of 3-7. At low pH (3 and 5), Pb solubility followed PbO-soil > PbCO3-soil > PbSO4-soil; while at pH = 7, it was PbSO4-soil > PbO-soil > PbCO3-soil. Phosphate decreased Pb dissolution time from > 180 to < 60 min and reduced soluble Pb by 67-100%. This was mostly via transformation of Pb minerals into chloropyromorphite [Pb-5(PO4)(3)Cl]. Our results indicated that P addition can effectively transform various Pb minerals into insoluble chloropyromorphite in soils. This transformation was more significant at acidic condition (e.g., pH <= 5). Among the three Pb minerals tested, PbSO4 was the most effectively immobilized by P, followed by PbO and PbCO3. This study clearly demonstrated the importance of the form of Pb contamination and soil pH in determining the effectiveness of Pb immobilization in soils. Published by Elsevier Ltd. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000254670100021 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://210.72.129.5/handle/321005/121315]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Ma, Lena Q. |
| 作者单位 | 1.Univ Florida, Dept Soil & Water Sci, Gainesville, FL 32611 USA 2.Chinese Acad Sci, Key Lab Terr Ecol Proc, Shenyang 110016, Liaoling, Peoples R China 3.Univ Saskatchewan, Dept Geol Sci, Saskatoon, SK S7J 2A6, Canada |
| 推荐引用方式 GB/T 7714 | Cao, Xinde,Ma, Lena Q.,Singh, Satya P.,et al. Phosphate-induced lead immobilization from different lead minerals in soils under varying pH conditions[J]. ENVIRONMENTAL POLLUTION,2008,152(1):184-192. |
| APA | Cao, Xinde,Ma, Lena Q.,Singh, Satya P.,&Zhou, Qixing.(2008).Phosphate-induced lead immobilization from different lead minerals in soils under varying pH conditions.ENVIRONMENTAL POLLUTION,152(1),184-192. |
| MLA | Cao, Xinde,et al."Phosphate-induced lead immobilization from different lead minerals in soils under varying pH conditions".ENVIRONMENTAL POLLUTION 152.1(2008):184-192. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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