Unraveling the size distributions of surface properties for purple soil and yellow soil
文献类型：期刊论文
| 作者 | Tian, Rui; Zhu, Hualing; Liu, Xinmin; Li, Hang; Tang, Ying
|
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2015-06-01 |
| 卷号 | 32页码:81-89 |
| 关键词 | Particle Size Distribution Soil Colloids Surface Charge Number Specific Surface Area Clay Minerals |
| 英文摘要 | Soils contain diverse colloidal particles whose properties are pertinent to ecological and human health, whereas few investigations systematically analyze the surface properties of these particles. The objective of this study was to elucidate the surface properties of particles within targeted size ranges (i.e. > 10, 1-10, 0.5-1, 0.2-0.5 and < 0.2 mu m) for a purple soil (Entisol) and a yellow soil (Ultisol) using the combined determination method. The mineralogy of corresponding particle-size fractions was determined by X-ray diffraction. We found that up to 80% of the specific surface area and 85% of the surface charge of the entire soil came from colloidal-sized particles (< 1 mu m), and almost half of the specific surface area and surface charge came from the smallest particles (< 0.2 mu m). Vermiculite, illite, montmorillonite and mica dominated in the colloidal-sized particles, of which the smallest particles had the highest proportion of vermiculite and montmorillonite. For a given size fraction, the purple soil had a larger specific surface area, stronger electrostatic field, and higher surface charge than the yellow soil due to differences in mineralogy. Likewise, the differences in surface properties among the various particle-size fractions can also be ascribed to mineralogy. Our results indicated that soil surface properties were essentially determined by the colloidal-sized particles, and the < 0.2 mu m nanoparticles made the largest contribution to soil properties. The composition of clay minerals within the diverse particle-size fractions could fully explain the size distributions of surface properties. (C) 2015 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| WOS研究方向 | Environmental Sciences |
| WOS记录号 | WOS:000356231900010 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/32904]  |
| 专题 | 生态环境研究中心_土壤环境科学实验室 |
| 推荐引用方式 GB/T 7714 | Tian, Rui,Zhu, Hualing,Liu, Xinmin,et al. Unraveling the size distributions of surface properties for purple soil and yellow soil[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2015,32:81-89. |
| APA | Tian, Rui,Zhu, Hualing,Liu, Xinmin,Li, Hang,&Tang, Ying.(2015).Unraveling the size distributions of surface properties for purple soil and yellow soil.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,32,81-89. |
| MLA | Tian, Rui,et al."Unraveling the size distributions of surface properties for purple soil and yellow soil".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 32(2015):81-89. |
入库方式： OAI收割
来源：生态环境研究中心
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