Assessment of the effectiveness of different phosphorus fertilizers to remediate Pb-contaminated soil using in vitro test
文献类型：期刊论文
| 作者 | Tang, LL; Tang, XY; Zhu, YG; Chen, SB; Chen, XP |
| 刊名 | ENVIRONMENT INTERNATIONAL
 |
| 出版日期 | 2004 |
| 卷号 | 30期号:4页码:531-537 |
| 关键词 | Phosphorus Fertilizers Pb-contaminated Soil In Vitro Test |
| DOI | 10.1016/j.envint.2003.10.008 |
| 英文摘要 | The addition of P-containing amendments was found to effectively reduce the bioaccessibility of Pb in soils to the human, using an in vitro test. For all treatments with P additions, the removal of soluble Pb in the small intestinal phase was observed. The effectiveness of various P treatments in the small intestinal phase generally followed this order at the equivalent P addition level: hydroxyapatite (HA)>phosphate rock (PR)>HA + single super-phosphate (SSP)>SSP. The relatively low effectiveness of P amendments at the gastric phase may be explained by the high solubility of pyromorphite at relatively low pH of 1.7. compared with that at the neutral small intestinal pH. Single super-phosphate showed the best performance in minimizing the bioaccessibility of Pb in the gastric phase, possibly due to its highest solubility at pH 1.7. Single super-phosphate showed the best performance in minimizing the bioaccessibility of Pb in gastric phase, possibly due its highest solubility at pH 1.7. However, in the small intestinal phase, SSP appears to be the least effective amendment, possibly due to its lowest Ca supply level to replace Pb form exchangeable sites, as reflected by its lowest molar Ca/P ratio of 1:2. The disagreement of the sequential extraction results with that of the in vitro test results indicated that the sequential extraction,vas not suitable for the assessment of the effect of P addition on minimizing the bioaccessibility of Pb to human due to the formation of pyromorphite during the extraction procedure. Results from this study also suggested that the time required for the in vitro test might be shortened for fast screening. (C) 2003 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS记录号 | WOS:000226641900011 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23562]  |
| 专题 | 生态环境研究中心_土壤环境科学实验室 |
| 推荐引用方式 GB/T 7714 | Tang, LL,Tang, XY,Zhu, YG,et al. Assessment of the effectiveness of different phosphorus fertilizers to remediate Pb-contaminated soil using in vitro test[J]. ENVIRONMENT INTERNATIONAL,2004,30(4):531-537. |
| APA | Tang, LL,Tang, XY,Zhu, YG,Chen, SB,&Chen, XP.(2004).Assessment of the effectiveness of different phosphorus fertilizers to remediate Pb-contaminated soil using in vitro test.ENVIRONMENT INTERNATIONAL,30(4),531-537. |
| MLA | Tang, LL,et al."Assessment of the effectiveness of different phosphorus fertilizers to remediate Pb-contaminated soil using in vitro test".ENVIRONMENT INTERNATIONAL 30.4(2004):531-537. |
入库方式： OAI收割
来源：生态环境研究中心
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