Climate Change Data Portal
DOI | 10.1016/j.jhazmat.2013.07.031 |
An evaluation of the impact of multiwalled carbon nanotubes on soil microbial community structure and functioning | |
Shrestha, Babina1; Acosta-Martinez, Veronica2; Cox, Stephen B.4; Green, Micah J.3; Li, Shibin5; Canas-Carrell, Jaclyn E.1 | |
发表日期 | 2013-10-15 |
ISSN | 0304-3894 |
卷号 | 261页码:188-197 |
英文摘要 | This study evaluated the impacts of multiwalled carbon nanotubes (MWNTs) on microbial community composition and functioning in a sandy loam soil over 90 d. We used test concentrations in the range of lower MWNT concentrations (10 mg/kg) to extremely high MWNT concentrations (10,000 mg/kg) as a worst case scenario. We observed no effects of MWNTs on soil respiration, enzymatic activities, and microbial community composition at 10, 100 and 1000 mg/kg. However, increases in fungal fatty acid methyl ester markers were observed at the highest treatment. In addition, pyroseguencing demonstrated a decreased abundance of some bacterial genera like Derxia, Holophaga, Opitutus and Waddlia at the highest treatment while bacterial genera that are considered potential degraders of recalcitrant contaminants (such as polycyclic aromatic hydrocarbons) like Rhodococcus, Cellulomonas, Nocardioides and Pseudomonas increased. These results suggest a shift in soil microbial community composition to more tolerant microbial populations in the presence of extremely high MWNT concentrations. It is unlikely that the change observed at 10,000 mg/kg is due to metal or carbon impurities as the MWNTs used in this study were of high purity. Given the need for wide-ranging data for regulation and risk assessment of nanomaterials, this study provides valuable data. (C) 2013 Elsevier B.V. All rights reserved. |
英文关键词 | Nanomaterials;MWNTs;Soil microbial community;Risk assessment;Pyrosequencing |
语种 | 英语 |
WOS记录号 | WOS:000328177300023 |
来源期刊 | JOURNAL OF HAZARDOUS MATERIALS
![]() |
来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/60263 |
作者单位 | 1.Texas Tech Univ, TIEHH, Dept Environm Toxicol, Lubbock, TX 79409 USA; 2.USDA ARS, Cropping Syst Res Lab, Wind Eros & Water Conservat Unit, Lubbock, TX 79401 USA; 3.Texas Tech Univ, Dept Chem Engn, Lubbock, TX 79409 USA; 4.Res & Testing Lab, Lubbock, TX USA; 5.US EPA, Midcontinent Ecol Div, Duluth, MN USA |
推荐引用方式 GB/T 7714 | Shrestha, Babina,Acosta-Martinez, Veronica,Cox, Stephen B.,et al. An evaluation of the impact of multiwalled carbon nanotubes on soil microbial community structure and functioning[J]. 美国环保署,2013,261:188-197. |
APA | Shrestha, Babina,Acosta-Martinez, Veronica,Cox, Stephen B.,Green, Micah J.,Li, Shibin,&Canas-Carrell, Jaclyn E..(2013).An evaluation of the impact of multiwalled carbon nanotubes on soil microbial community structure and functioning.JOURNAL OF HAZARDOUS MATERIALS,261,188-197. |
MLA | Shrestha, Babina,et al."An evaluation of the impact of multiwalled carbon nanotubes on soil microbial community structure and functioning".JOURNAL OF HAZARDOUS MATERIALS 261(2013):188-197. |
条目包含的文件 | 条目无相关文件。 |
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。