Evaluation of the Effects of Cadmium in Soil on the LC50 of Soil Bacteria and Fungi for Environmental Monitoring
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Date
2021-05-07
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J. Appl. Sci. Environ. Manage.
Abstract
Contamination of soil with heavy metals by is currently of global concern. Cadmium (Cd) is one of the
metals of concern. In the current study, LC50 of Cd to soil bacteria and fungi was used to assess the impact of anthropogenic
activity in development of Cd tolerance in soil microorganisms. Levels of Bio-physicochemical parameters in soil were
determined. Results show that the concentration of Total Petroleum Hydrocarbon (TPH) and Cd in soil ranged between
5.09±0.33 to 9261.94±287.67, and 0.023±0.015 to 0.057±0.012 ppm respectively. There was significant difference (p =
0.001) in LC50 for fungi between the study and control samples. Pearson correlation showed that there was significant
relationship (r = 0.30) between LC50 for bacteria and TPH. There was significant difference (p = 0.017) in LC50 values
among the study and control samples for fungi. Anthropogenic activities influenced the concentrations of TPH soil but did
not influence levels of Cd.
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Keywords
Petroleum, Cadmium, Toxicity, Microorganism, Tolerance, LC50,