title: Investigating polycyclic aromatic hydrocarbons profiles in higher plants using statistical models.
abstract: Thirty-six higher plants sampled from Olomoro, Irri, Uzere, and Oginni exploration sites in the Niger Delta region of Nigeria were subjected to GC/MS analysis to assess the occurrence, distribution and profiles of polycyclic aromatic hydrocarbons (PAHs) contained in them. The sigma28PAHs ranged from 335 to 3094 ng/g. The results of the nonparametric regression models showed that PAHs concentration in a plant cannot be used in isolation to deduce the total PAHs concentration in soils hosting the plant since PAHs concentration in a plant is influenced by the presence (or absence) of other plants in that location. A combination of Factor analysis (FA) and principal component analysis (PCA) were used to recognize PAHs concentration patterns among the plants in the studied locations and individual PAHs compounds. Woody annuals and perennial plants formed similar patterns in Oginni and Irri locations. Three main clusters were formed by all the compounds with naphthalene and 2-methylnaphthalene standing as outliers in all the four locations.
authors.affiliation: Department of Chemical Sciences, Redeemer's University, Nigeria. sojinuok20000@yahoo.com
authors.forename: O Samuel
authors.initials: OS
authors.lastname: Sojinu
authors.forename: O Oluwadayo
authors.initials: OO
authors.lastname: Sonibare
authors.forename: Ezra
authors.initials: E
authors.lastname: Gayawan
mesh_terms: D001499:Bayes Theorem; D016000:Cluster Analysis; D019669:Embryophyta / Q000737:chemistry*; D004784:Environmental Monitoring / Q000592:standards / Q000706:statistics & numerical data*; D005163:Factor Analysis, Statistical; D008401:Gas Chromatography-Mass Spectrometry; D019015:Geologic Sediments / Q000737:chemistry; D015233:Models, Statistical; D015999:Multivariate Analysis; D009549:Nigeria; D018515:Plant Leaves / Q000737:chemistry; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D025341:Principal Component Analysis; D011786:Quality Control; D012044:Regression Analysis; D012987:Soil / Q000737:chemistry; D018709:Statistics, Nonparametric
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D012987:Soil