Ecological risk evaluation of spent engine oil pollution using earthworm and microbial bioassays
Azorji John Paul Nnawuike,
Angela Chika Udebuani,
Nwachukwu Udodi Chibuike
et al.
Abstract:The study aimed to assess the ecotoxicological risk associated with the indiscriminate disposal of spent engine oil on terrestrial ecosystem using earthworm and microbial assays. Soil samples were collected from a depth of 0-20 cm and subjected to standard analytical protocols for analysis. Earthworms (assessed by mortality rate) and microorganisms (evaluated for inhibitory effects) covered a wide range of short-term lethal and sub-lethal endpoints used for risk characterization, analyzed through Probit analys… Show more
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