Structural equation modeling of the interactions between trace elements and soil organic matter in semiarid soils

The bioavailability of trace elements is strongly influenced by the physical and chemical properties of the soil system. This study sought to establish the relationships between the trace elements (barium, strontium and rubidium), soil organic matter and soil separates in semiarid soils from Central...

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Bibliographic Details
Published in:International journal of environmental science and technology (Tehran) 2020-04, Vol.17 (4), p.2205-2214
Main Authors: Kebonye, N. M., Eze, P. N., Ahado, S. K., John, K.
Format: Article
Language:English
Subjects:
Aquatic Pollution
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Science and Engineering
Original Paper
Soil Science & Conservation
Waste Water Technology
Water Management
Water Pollution Control
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Summary:The bioavailability of trace elements is strongly influenced by the physical and chemical properties of the soil system. This study sought to establish the relationships between the trace elements (barium, strontium and rubidium), soil organic matter and soil separates in semiarid soils from Central Botswana in a bid to improve our understanding of trace elements biogeochemistry. Trace element contents were obtained using portable X-ray fluorescence spectroscopy, while routine soil analysis methods were used for soil organic matter analyses and particle size distribution. Both multivariate statistical analysis and structural equation model were applied to the data. Results for correlation matrix and principal component analysis showed trace elements affinity for silt, clay and soil organic matter: barium and silt ( r  = 0.54, p  
ISSN:1735-1472
1735-2630
DOI:10.1007/s13762-019-02610-1