Muhammad A. Asadi, Risris Kemalawati, Guntur Guntur, Oktiyas M. Luthfi
Oil spills are a major contributor to marine pollution. It can threaten marine ecosystem function and cause significant damage over both a short and long time period. The aims of this study were to quantify and characterize the polycyclic aromatic hydrocarbon (PAH) of diesel oil water accommodated fraction (WAF) and chemically enhanced WAF (CEWAF), and to determine the LC50 of diesel oil WAF and CEWAF at both pH 6.5 and 8.5 to Litopenaeus vannamei. PAH quantification and characterization were using high-performance liquid chromatography method, while the LC50 determination was using acute toxicity test. Diesel oil WAF was much less toxic than that of diesel oil CEWAF, in which the LC50 values of the WAF were 177.25 g L-1 and 205.42 g L-1 for pH 6.5 and 8.5 respectively, while the LC50 values of the CEWAF were 39.59 g L-1 and 72.15 g L-1 for pH 6.5 and 8.5 respectively. The WAF contained lower concentration of PAH than the CEWAF (0.84 mg L-1 and 3.16 mgL-1 PAH respectively), in which anthracene was the most dominant type of PAH. Those with the higher amount of PAH in CEWAF led the higher toxicity to L. vannamei. However, the addition of chemical dispersant to the diesel oil WAF does not cause a synergistic toxicity effect to the whiteleg shrimps, L. vannamei. © 2018, BIOFLUX SRL. All rights reserved.
Marine Science Department, Brawijaya University, Jl. Veteran no. 16, Malang, 65144, Indonesia
