|
Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 22, No. 12, 2018, pp. 1891-1897
|
Bioline Code: ja18316
Full paper language: English
Document type: Research Article
Document available free of charge
|
|
Journal of Applied Sciences and Environmental Management, Vol. 22, No. 12, 2018, pp. 1891-1897
en |
Toxicity Comparison of Water-Accommodated Fraction and Chemically Enhanced Fraction of Bonny Light Crude Oil and Dispersit SPC 1000 to Mudskipper ( Periophthalmus papilio ) Fish
KORANTENG – ADDO, EJ; HORSFALL, M Jnr; JOEL, OF & BENTUM, JK
Abstract
This study assessed the physicochemical characteristics and toxicity of water-accommodated fraction
(WAF) and chemically enhanced WAF (CEWAF) of Bonny Light Crude oil and Dispersit SPC 1000 (dispersant) to
Mudskipper fish (Periophthalmus Papilio). There were variations in the levels of the physicochemical parameters. The
coefficient of variation (CV) indicated that the temperature show the least variation of 2.24% and salinity the highest
98.12%.Hypothesis test for significant differences at p < 0.05 significance level however, showed that there were no
significant differences in the levels of the measured parameters over the 96 hours. All the mudskippers fish samples
exposed to the water accumulated water fraction of 10% bonny oil survived beyond 96 hours. An increase in toxicity of
the oil was observed after 72-96 hour exposures of the mudskipper to the oil and dispersant CEWAF. For dispersant
concentrations of 540 ml/L and 630 ml/L the survival of mudskippers was 80%. These mortalities might be due to the
toxic effect of the dispersant, Dispersit SPC 1000.The Total Petroleum Hydrocarbon (TPH) and the Polycyclic Aromatic
Hydrocarbon (PAH) in the test media were respectively 7.66-63.18 ppm and 0.82-5.26 ppm.10% Bonny light crude oil
WAF had no effects on mudskipper survival. Exposures to 540 ml/L and 630 ml/L Dispersit SPC 1000 dispersed oil WAF
(CEWAF) resulted in 20 % mortality. The lethal dose concentration was 885.5 ml/L (88.55%). The lowest observed effect
concentration (LOEC) was found to be 540 ml/L.
Keywords
Water-accommodated fraction; chemically enhanced fraction; Dispersant; Mudskipper fish.
|
|
© Copyright 2018 - Koranteng-Addo et al.
|
|