Soil colloidal characterization regarding to P and Corg the Atacama desert
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| Title: | Main Title: Soil colloidal characterization regarding to P and Corg the Atacama desert |
| Description: | Abstract: Despite numerous investigations about the alternation of soil biochemical properties by climate change driven by elevation, latitude, etc. in arid to hyper-arid regions, little is known about soil colloids (1-1000 nm) and nanoparticles (1-100 nm) as nutrient carriers. We investigated the size and composition of water dispersible colloids (WDCs) from three depth profiles in an altitudinal transect at Paposo, Chile using asymmetric field flow field fractionation (A-FFFF) coupled online to various detectors (ICP-MS, UV and organic carbon detector). One of the soil profiles was located in a semi-arid part and the two others in an arid area in the vicinity of each other. According to the results three size fractions of soil colloids were identified, naming nanoparticles from 0.6 to 24 nm, fine colloids from 24 to 210 nm, and medium colloids from 210 to 500 nm. Comparison of the two profiles at the drier site, showed that the one located on a fan surface contained higher amount of larger particles probably due to the transfer of finer ones in case of water availability. In the less arid site, nanoparticles were Corg dominated, while nanoparticles of the other two profiles were dominated by inorganic components. The composition of fine and medium size colloids of all the soil profiles was dominated by Si, Al and Fe. Our result show the effectiveness of local factors on soil colloidal behaviors in arid environments compared to various climatic regimes. |
Responsible Party
| Creator: | Ghazal Moradi (Author) |
| Publisher: | CRC1211 Database (CRC1211DB) |
| Publication Year: | 2019 |
Topic
| CRC1211 Topic: | Biology |
| Related Subproject: | B5 |
| Subject: | Keyword: Biogeochemistry of Soils |
File Details
| Filename: | poster-Goldschmidt.pdf |
| Data Type: | Text - Text |
| File Size: | 2.3 MB |
| Date: | Created: 17.10.2019 |
| Mime Type: | application/pdf |
| Language: | English |
| Status: | In Process |
Constraints
| Download Permission: | Only Own Subproject |
| General Access and Use Conditions: | According to the CRC1211DB data policy agreement. |
| Access Limitations: | According to the CRC1211DB data policy agreement. |
| Licence: | None |
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Specific Information - Presentation
| Presenter: | Ghazal Moradi |
| Presentation Date: | 21st of August, 2019 |
| Presentation Type: | Poster |
| Event: | Goldschmidt2019 |
| Event Type: | Conference |
| Event Location: | Barcelona, Spain |
| Event Duration: | 18th of August, 2019 - 23rd of August, 2019 |
Metadata Details
| Metadata Creator: | Ghazal Moradi |
| Metadata Created: | 17.10.2019 |
| Metadata Last Updated: | 17.10.2019 |
| Subproject: | B5 |
| Funding Phase: | 1 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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| Page Visits: | 88 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 2 |
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