A laboratory study on risk assessment of microcystin-RR in cropland
文献类型：期刊论文
| 作者 | Liu Bibo1,2; Gong Yan1,2; Xiao Bangding1,2; Liu Jiantong1; Liu Yongding1 |
| 刊名 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
 |
| 出版日期 | 2008-02-01 |
| 卷号 | 86期号:3页码:566-574 |
| 关键词 | microcystin-RR environmental behavior cropland soils adsorption biodegradation persistence time crop plants |
| ISSN号 | 0301-4797 |
| 通讯作者 | Liu, JT, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China |
| 中文摘要 | The persistence time and risk of microcystin-RR (MC-RR) in cropland via irrigation were investigated under laboratory conditions. In order to evaluate the efficiency of the potential adsorption and biodegradation of MC-RR in cropland and the persistence time of MC-RR for crop irrigation, high performance liquid chromatography (HPLC) was used to quantify the amount of MC-RR in solutions. Our study indicated that MC-RR could be adsorbed and biodegraded in cropland soils. MC-RR at 6.5 mg/L could be completely degraded within 6 days with a lag phase of 1 - 2 days. In the presence of humic acid, the same amount of MC-RR could be degraded within 4 days without a lag phase. Accordingly, the persistence time of MC-RR in cropland soils should be about 6 days. This result also suggested the beneficial effects of the organic fertilizer utilization for the biodegradation of MC-RR in cropland soils. Our studies also demonstrated that MC-RR at low concentration (< 10 mu g/L) could accelerate the growth of plants, while high concentration of MC-RR (> 100 mu g/L) significantly inhibited the growth of plants. High sensitivity of the sprouting stage plants to MC-RR treatments as well as the strong inhibitory effects resulting from prolonged irrigation further indicated that this MC-RR growth-inhibition may vary with the duration of irrigation and life stage of the plants. (c) 2007 Published by Elsevier Ltd. |
| 英文摘要 | The persistence time and risk of microcystin-RR (MC-RR) in cropland via irrigation were investigated under laboratory conditions. In order to evaluate the efficiency of the potential adsorption and biodegradation of MC-RR in cropland and the persistence time of MC-RR for crop irrigation, high performance liquid chromatography (HPLC) was used to quantify the amount of MC-RR in solutions. Our study indicated that MC-RR could be adsorbed and biodegraded in cropland soils. MC-RR at 6.5 mg/L could be completely degraded within 6 days with a lag phase of 1 - 2 days. In the presence of humic acid, the same amount of MC-RR could be degraded within 4 days without a lag phase. Accordingly, the persistence time of MC-RR in cropland soils should be about 6 days. This result also suggested the beneficial effects of the organic fertilizer utilization for the biodegradation of MC-RR in cropland soils. Our studies also demonstrated that MC-RR at low concentration (< 10 mu g/L) could accelerate the growth of plants, while high concentration of MC-RR (> 100 mu g/L) significantly inhibited the growth of plants. High sensitivity of the sprouting stage plants to MC-RR treatments as well as the strong inhibitory effects resulting from prolonged irrigation further indicated that this MC-RR growth-inhibition may vary with the duration of irrigation and life stage of the plants. (c) 2007 Published by Elsevier Ltd. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Environmental Sciences; Environmental Studies |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | CYANOBACTERIAL HEPATOTOXINS ; PLANT-GROWTH ; LR ; DEGRADATION ; HORMESIS ; ADSORPTION ; PROMOTION ; TOXICITY ; EXPOSURE ; PROTEIN |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000252673300012 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/8288]  |
| 专题 | 水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu Bibo,Gong Yan,Xiao Bangding,et al. A laboratory study on risk assessment of microcystin-RR in cropland[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2008,86(3):566-574. |
| APA | Liu Bibo,Gong Yan,Xiao Bangding,Liu Jiantong,&Liu Yongding.(2008).A laboratory study on risk assessment of microcystin-RR in cropland.JOURNAL OF ENVIRONMENTAL MANAGEMENT,86(3),566-574. |
| MLA | Liu Bibo,et al."A laboratory study on risk assessment of microcystin-RR in cropland".JOURNAL OF ENVIRONMENTAL MANAGEMENT 86.3(2008):566-574. |
入库方式： OAI收割
来源：水生生物研究所
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