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Updated: May 2, 2026

Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil
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Barium Levels in Soils and Centella asiatica.

Ghim Hock Ong1, Chee Kong Yap1, Maziah Mahmood2

  • 1Department of Biology, Faculty of Science, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.

Tropical Life Sciences Research
|February 28, 2014
PubMed
Summary

Centella asiatica roots, leaves, and stems effectively absorb barium (Ba) from soil, acting as reliable bioindicators of barium pollution. Even after relocation, the plant retains elevated Ba levels, confirming its biomonitoring potential.

Keywords:
BariumBiomonitorCentella asiaticaCorrelation CoefficientTransplantation

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Area of Science:

  • Environmental Science
  • Biomonitoring
  • Plant Physiology

Background:

  • Barium (Ba) contamination in soil poses environmental risks.
  • Centella asiatica is a widely distributed plant with potential for phytoremediation and biomonitoring.
  • Understanding Ba accumulation in C. asiatica is crucial for assessing soil pollution levels.

Purpose of the Study:

  • To determine barium concentrations in Centella asiatica and associated soils in Peninsular Malaysia.
  • To evaluate the potential of C. asiatica parts (roots, leaves, stems) as biomonitors for barium pollution.
  • To assess Ba uptake and elimination dynamics in C. asiatica through transplantation experiments.

Main Methods:

  • Collection of C. asiatica and surface soil samples from 12 sites in Peninsular Malaysia.
  • Quantification of Ba concentrations using established analytical techniques.
  • Transplantation of C. asiatica to unpolluted, semi-polluted, and polluted sites for exposure studies.

Main Results:

  • Significant positive correlations were observed between soil Ba concentrations and Ba accumulation in C. asiatica roots (r=0.922), leaves (r=0.890), and stems (r=0.848).
  • Ba accumulation was highest in roots, followed by leaves and stems.
  • Transplantation studies confirmed that C. asiatica readily accumulates Ba from polluted soils within three weeks, and elevated levels persist even after returning to clean soil.

Conclusions:

  • Centella asiatica, particularly its roots, leaves, and stems, serves as an effective biomonitor for barium pollution in soils.
  • The plant's ability to accumulate and retain Ba demonstrates its utility in environmental pollution assessment.
  • Further research can explore C. asiatica for phytoremediation strategies targeting barium-contaminated sites.