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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Tsao, Tsung M. Chen, Yue M. Wang, Ming K. |
| Description | Country affiliation: Taiwan Author Affiliation: Tsao TM ( Department of Agricultural Chemistry, National Taiwan University, Taipei, Taiwan.) |
| Abstract | The biogeochemical and ecological impacts of environmental nanoparticles (ENPs) are some of the fastest growing areas of research today. However, efficient separation and collection of ENPs in natural systems remains difficult. This review article is focused on experimental investigation of separation and identification of ENPs, including nanoparticles with size fractions in the range of <2000, 450 to 2000, 100 to 450 and 1 to 100 nm. An automated ultrafiltration device (AUD) was used successfully to overcome the problem of efficiently collecting ENPs in large quantities in red soils. A significant amount of hematite nanoparticles was present on the surface coating of kaolinite nanoparticles and aggregated hematite nanoparticles overlapping the edge of a kaolinite flake in a size range of 5 to 8 nm. Synchrotron XRD technique is more straightforward and powerful than conventional XRD with oriented specimens and random powder methods for identifying nanoparticles, crystallinity, and particle size in red soils, particularly for the illite, kaolinite, goethite and hematite nanoparticles. The AUD apparatus can be employed to efficiently collect large quantities of soil and related ENPs for investigation of their structural characteristics and surface properties, which have significant impact on weathering reaction pathways, catalysis, the fate of vital elements and environmental pollutants, and ecosystem restoration. |
| File Format | HTM / HTML |
| ISSN | 14640325 |
| Issue Number | 5 |
| Volume Number | 13 |
| e-ISSN | 14640333 |
| Journal | Journal of Environmental Monitoring |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Publisher Date | 2011-05-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | Subscribed |
| Subject Keyword | Discipline Environmental Health Environmental Pollutants Analysis Nanoparticles Chemical Fractionation Ecosystem Environment Environmental Monitoring Instrumentation Methods Chemistry Microscopy, Electron, Transmission Particle Size Soil Ultrafiltration X-ray Diffraction Journal Article Research Support, Non-u.s. Gov't Review |
| Content Type | Text |
| Resource Type | Article |
| Subject | Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law |
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