Authors: Oleszczuk, Patryk; Baran, Stanislaw

Source: Chemical Speciation and Bioavailability, Volume 18, Number 1, February 2006 , pp. 39-48(10)

Publisher: Science Reviews 2000 Ltd

Abstract:

The aim of the present study was to evaluates the content of mild-solvent extracted fraction of the polycyclic aromatic hydrocarbons in the rhizospheres of some selected plant species (Cucumis sativa, Daucus carota, Allium cepa, Cucurbita pepo, Petroselinum sativum, Cucurbita sp., Phaseol us vulgaris, Beta vulgaris, Apium graveolens, Allium porrum, Vicia faba). Ten compounds from the US EPA list (phenanthrene, anthracene, fluoranthene, pyrene, benzo[a]anthracene, chryzene, benzo[b]fluoranthene, benzo[a]pyrene, benzo[ghi]perylene oraz indeno[1,2,3-cd]pyrene) were chosen. The polycyclic aromatic hydrocarbon (PAH) content was determined using the HPLC method with UV detection after a preliminary sample treatment with ultrasonic techniques. On the basis of the PAH content, the organic carbon content and the value of log K_oc, (equilibrium partitioning model) a soil pore water PAH fractions present in the rhizospheres of the plants studied were calculated too.

The content of the fraction extracted with n-butanol within the total of 10 PAHs ranged from 55% to 90% (mean 74%). Similarly, as in the case of the total of the 10 PAHs, significant differences in the content of PAHs extracted with n-butanol were also noted for the individual compounds studied. The content of the total of the 10 PAHs as determined from equilibrium partitioning model in relation to plant species ranged from 0.03 to 0.18 μg/kg which constituted from 0.07% to 0.15% of the total content of these compounds. No clear relations between soil properties and the content or contribution of potentially bio-available PAH fractions have been observed.

Keywords: bioavailability; rhizosphere; polycyclic aromatic hydrocarbons

Document Type: Research article

DOI: http://dx.doi.org/10.3184/095422906782146302

Affiliations: 1: Institute of Soil Science and Environmental Management, Agriculture University, ul. Leszczyńskiego 7, 20-069 Lublin, Poland

Publication date: 2006-02-10

More about this publication?

• Chemical Speciation & Bioavailability covers a rapidly expanding area in environmental science.

  Research on the interactions between the chemical forms and behaviour of toxic compounds and their subsequent biological uptake, metabolism and ecological fate involves many scientific fields. These studies are often published in discipline-specific journals, leading to inadequate review and information scatter. This situation hinders both the development of an international community of experienced colleagues and the open flow of information and discussion. Additionally, the importance of speciation and bioavailability research to the development of pollution law and control technologies is being increasingly appreciated by environmental regulatory agencies throughout the world.

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