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Updated: Feb 11, 2026

Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil
Published on: September 1, 2020
Are the existing guideline values adequate to protect soil health from inorganic mercury contamination?
Khandaker Rayhan Mahbub1, Md Mezbaul Bahar2, Mallavarapu Megharaj2
1School of Life Sciences, University of Technology Sydney, Ultimo, NSW 2007, Australia.
Abstract:
Currently, data that guide safe concentration ranges for inorganic mercury in the soil are lacking and subsequently, threaten soil health. In the present study, a species sensitivity distribution (SSD) approach was applied to estimate critical mercury concentration that has little (HC5) or no effect (PNEC) on soil biota. Recently published terrestrial toxicity data were incorporated in the approach. Considering total mercury content in soils, the estimated HC5 was 0.6 mg/kg, and the PNEC was 0.12-0.6 mg/kg. Whereas, when only water-soluble mercury fractions were considered, these values were 0.04 mg/kg and 0.008-0.04 mg/kg, respectively.
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