title: Particle size characterization of oak wood leachate: chemical oxygen demand and toxicity distribution within different fractions.
abstract: Oak wood leachate obtained from two storage facilities (storage pound and ditch) in a wood-based industry, and leachate generated by a laboratory leaching test, were characterized in seven categories regarding particle size distribution (PSD) (raw leachate, ≤ 20 μm, ≤ 10 μm, ≤ 1.2 μm, ≤ 13 nm, ≤ 5 nm and ≤ 2 nm). The PSD followed a normal distribution model with a correlation coefficient (r) varying from 82 to 88. Each fraction was analysed regarding chemical oxygen demand, polyphenols and acute toxicity in toxicity assays with Artemia salina, Vibrio fischeri and Lactuca sativa. Fractions with particles >1.2 μm were more toxic to A. salina and V. fisheri than fractions with particles ≤ 1.2 μm. No toxic effect was observed for L. sativa. The results suggest that polyphenols are the main toxic compounds in oak wood leachate. A conspicuous difference was found between field and laboratory samples.
authors.affiliation: The School of Natural Sciences, Linnaeus University, SE-392 31 Kalmar, Sweden E-mail: henric.svensson@lnu.se.
authors.forename: Henric
authors.initials: H
authors.lastname: Svensson
authors.affiliation: The School of Natural Sciences, Linnaeus University, SE-392 31 Kalmar, Sweden E-mail: henric.svensson@lnu.se.
authors.forename: Yahya
authors.initials: Y
authors.lastname: Jani
authors.affiliation: The School of Natural Sciences, Linnaeus University, SE-392 31 Kalmar, Sweden E-mail: henric.svensson@lnu.se.
authors.forename: William
authors.initials: W
authors.lastname: Hogland
authors.affiliation: Department of Sanitary and Environmental Engineering, Rio de Janeiro State University UERJ, R. São Francisco Xavier, 524, CEP 20551-013, Rio de Janeiro, Brazil.
authors.forename: Marcia
authors.initials: M
authors.lastname: Marques
mesh_terms: D057919:Biological Oxygen Demand Analysis; D010316:Particle Size; D029963:Quercus; D018675:Toxicity Tests; D014873:Water Pollutants / Q000737:chemistry* / Q000633:toxicity*; D014934:Wood
chemical_list: D014873:Water Pollutants