| Bioavailability to grains of rice of aged and fresh DDD and DDE in soils | |
| Yao, Fenxia; Yu, Guifen; Bian, Yongrong; Yang, Xinglun; Wang, Fang; Jiang, Xin | |
| 刊名 | CHEMOSPHERE
 |
| 2007-05-01 | |
| 卷号 | 68期号:1页码:78-84 |
| 关键词 | POPs uptake soil type flooding rice straw |
| ISSN号 | 0045-6535 |
| DOI | 10.1016/j.chemosphere.2006.12.035 |
| 通讯作者 | Jiang, Xin(jiangxin@issas.ac.cn) |
| 英文摘要 | DDT had been widely used around the world before 1980s and is still under production and use for non-agricultural purposes in China. Because of their special physicochemical properties, p,p '-DDT and its main metabolites, p,p '-DDD and p,p '-DDE, accumulated and persisted in the environment, presenting potential menace on biota. A green-house study was conducted to determine the bioavailability of p,p '-DDD and pp-DDE to grains of rice and the influences of traditional Chinese farming practices on their bioaccumulation. Paddy rice and dry rice were grown in submerged paddy soils and non-submerged upland soils, respectively. Two types of soil, Hydragric Anthrosols (An) and Hydragric Acrisols (Ac), were employed. Bioaccumulation factors (BAFs) of DDE ranged from 0.67 for rice grown in non-submerged An to 0.84 in submerged An in the control group, whilst BAFs were all below 0.04 in experimental groups. BAFs of DDD varied from 1.39 for submerged An to 2.26 for submerged Ac in original soils. In contrast, BAFs were between 0.05 for non-submerged Ac and 0.08 for submerged An in DDD-contaminated soils. Flooding seemed to have two contradictory effects on the DDE/DDD accumulation by rice: on one hand, it made the pollutants more mobile and bioavailable; while on the other hand, it enhanced the degradation and binding of POPs. Adding rice straw to the soils protected DDE from being taken up yet promoted DDD accumulation by rice. Furthermore, the distinct inorganic component of the soils might also play an important role in the environmental activities of POPs. (C) 2006 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | WEATHERED P,P'-DDE ; AGRICULTURAL SOIL ; BOUND RESIDUES ; PLANTS ; CHINA ; PESTICIDES ; TEMPERATURE ; CUCURBITA ; MOISTURE ; WATER |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000246505800010 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2558731 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Jiang, Xin |
| 作者单位 | Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yao, Fenxia,Yu, Guifen,Bian, Yongrong,et al. Bioavailability to grains of rice of aged and fresh DDD and DDE in soils[J]. CHEMOSPHERE,2007,68(1):78-84. |
| APA | Yao, Fenxia,Yu, Guifen,Bian, Yongrong,Yang, Xinglun,Wang, Fang,&Jiang, Xin.(2007).Bioavailability to grains of rice of aged and fresh DDD and DDE in soils.CHEMOSPHERE,68(1),78-84. |
| MLA | Yao, Fenxia,et al."Bioavailability to grains of rice of aged and fresh DDD and DDE in soils".CHEMOSPHERE 68.1(2007):78-84. |
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