Interaction of different-sized ZnO nanoparticles with maize (Zea mays) Accumulation, biotransformation and phytotoxicity
文献类型：期刊论文
| 作者 | BSRF用户 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2021 |
| 卷号 | 796页码:148927 |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2021.148927 |
| 文献子类 | Article |
| 英文摘要 | This study aimed to investigate the biotransformation of ZnO nanoparticles (NPs) in maize grown in hydroponics for ecotoxicity assessment. Maize seedlings grown for 14 days were exposed to a solution of 9 nm ZnO NPs, 40 nm ZnO NPs, and ZnSO4 at a Zn concentration of 300 mg L-1 for 1, 3, and 7 days, respectively. The results of in situ Zn distribution in maize (Zea mays) showed that 9 nm ZnO NPs could quickly enter the roots of maize and reach the center column transport system of the stem. The results of transmission electron microscopy combined with energy dispersive X-ray spectroscopy revealed that ZnO NPs were accumulated in the vacuoles of the roots, and then transformed and transported through vesides. Simulated studies showed that low pH (5.6) played a critical role in the transformation of ZnO NPs, and organic acids (K-f = 10(11.4)) could promote particle dissolution. Visual MINTEQ software simulated the spedes of Zn after the entry of ZnO NPs or Zn2+ into plants and found that the species of Zn was mainly Zn2+ when the Zn content of plants reached 200-300 ppm. Considering that the lowest Zn content of the roots in treatments was 1920 mg kg(-1), combination of the result analysis of root effects showed that the toxicity of roots in most treatments had a direct relationship with Zn2+. However, treatment with 9 nm ZnO NPs exhibited significantly higher toxicity than ZnSO4 treatment on day 1 when the Zn2+ concentration difference was not significant, which was mainly due to the large amount of ZnO NPs deposited in the roots. To the authors' knowledge, this study was the first to confirm the process of biotransformation and explore the factors affecting the toxicity of ZnO NPs in depth. (C) 2021 Elsevier B.V. All rights reserved. |
| 电子版国际标准刊号 | 1879-1026 |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000701140100004 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/293026]  |
| 专题 | 北京同步辐射装置 |
| 推荐引用方式 GB/T 7714 | BSRF用户. Interaction of different-sized ZnO nanoparticles with maize (Zea mays) Accumulation, biotransformation and phytotoxicity[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,796:148927. |
| APA | BSRF用户.(2021).Interaction of different-sized ZnO nanoparticles with maize (Zea mays) Accumulation, biotransformation and phytotoxicity.SCIENCE OF THE TOTAL ENVIRONMENT,796,148927. |
| MLA | BSRF用户."Interaction of different-sized ZnO nanoparticles with maize (Zea mays) Accumulation, biotransformation and phytotoxicity".SCIENCE OF THE TOTAL ENVIRONMENT 796(2021):148927. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。