Title of article :
Toxicity of four nitrogen-heterocyclic polyaromatic hydrocarbons (NPAHs) to soil organisms
Author/Authors :
K. Kobeti?ov?، نويسنده , , J. Bezchlebov?، نويسنده , , J. L?na، نويسنده , , I. Sochov?، نويسنده , , J. Hofman، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Pages :
11
From page :
650
To page :
660
Abstract :
The aims of this study were: (i) to investigate the toxicity of N-heterocyclic polyaromatic hydrocarbons (NPAHs) quinoline, acridine, phenazine, and 1,10-phenanthroline to the soil invertebrates Eisenia fetida, Enchytraeus crypticus, Folsomia candida, and Caenorhabditis elegans, (ii) to compare the toxicity of four NPAHs and the species sensitivity, and (iii) to discuss possible risks of these compounds in soils. Different toxicities were found for the tested NPAHs which might be partially explained by their structure and properties. Effect concentrations expressed as soil pore-water concentrations were related to log Kow, which indicated narcosis as the most probable mode of toxic action. The species sensitivity decreased in the rank: springtails >enchytraeids=earthworms> nematodes. Predicted no-effect concentration (PNEC) values were calculated for all tested species giving values from 0.5 to 6.8 mg/kg. It is unlikely that there is a risk for soil organisms in natural soils where lower NPAHs concentrations are expected.
Keywords :
Eisenia fetida , NPAHs ecotoxicity , Folsomia candida , risk assessment , Enchytraeus crypticus
Journal title :
Ecotoxicology and Environmental Safety
Serial Year :
2008
Journal title :
Ecotoxicology and Environmental Safety
Record number :
711505
Link To Document :
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