title: Prediction of polycyclic aromatic hydrocarbons toxicity using equilibrium partitioning approach and narcosis model.
abstract: The study underscores the use of equilibrium partitioning (EqP) to determine bioavailability and the narcosis theory to estimate toxicity of PAHs to benthic invertebrates. Eight PAHs (anthracene, azuleno(2,1-b)thiophene, benz(a)anthracene, carbazole, dibenzothiophene, benz(a)azulene, dibenzo(a,h)anthracene and phenanthrene) were identified with phenanthrene and carbazole recording the highest (6.29 microg/g) and least (0.06 microg/g) concentrations at both seasons. Based on EqP and Narcosis model, the sum of PAHs toxic unit (SigmaTU), at both sites is <<1, suggesting no likelihood of PAHs toxicity to benthic invertebrates. The study suggests continuous PAH monitoring especially with aquatic species due to their transfer to human via food chain.
authors.affiliation: Department of Chemistry and Industrial Chemistry, Adekunle Ajasin University, P. M. B. 001, Akungba-Akoko, Ondo-State, Nigeria. olisa200@yahoo.com
authors.forename: I A
authors.initials: IA
authors.lastname: Ololade
mesh_terms: D000818:Animals; D005591:Chemical Fractionation; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D007448:Invertebrates / Q000187:drug effects; D023421:Models, Animal; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis / Q000633:toxicity*; D012621:Seasons; D053608:Stupor / Q000139:chemically induced*; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000633:toxicity*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; D014867:Water