Document Detail

Accumulation of weathered polycyclic aromatic hydrocarbons (PAHs) by plant and earthworm species.
MedLine Citation:
PMID:  16337258     Owner:  NLM     Status:  MEDLINE    
Experiments were conducted to assess the bioavailability of polyclycic aromatic hydrocarbons (PAHs) in soil from a Manufactured Gas Plant site. Three plant species were cultivated for four consecutive growing cycles (28 days each) in soil contaminated with 36.3 microg/g total PAH. During the first growth period, Cucurbita pepo ssp. pepo (zucchini) tissues contained significantly greater quantities of PAHs than did Cucumis sativus (cucumber) and Cucurbita pepo ssp. ovifera (squash). During the first growth cycle, zucchini plants accumulated up to 5.47 times more total PAH than did the other plants, including up to three orders of magnitude greater levels of the six ring PAHs. Over growth cycles 2-4, PAH accumulation by zucchini decreased by 85%, whereas the uptake of the contaminants by cucumber and squash remained relatively constant. Over all four growth cycles, the removal of PAHs by zucchini was still twice that of the other species. Two earthworm species accumulated significantly different amounts of PAH from the soil; Eisenia foetida and Lumbricus terrestris contained 0.204 and 0.084 microg/g total PAH, respectively, but neither species accumulated measurable quantities 5 or 6 ring PAHs. Lastly, in abiotic desorption experiments with an aqueous phase of synthetically prepared organic acid solutions, the release of 3 and 4 ring PAHs from soil was unaffected by the treatments but the desorption of 5-6 ring constituents was increased by up to two orders of magnitude. The data show that not only is the accumulation of weathered PAHs species-specific but also that the bioavailability of individual PAH constituents is highly variable.
Zakia D Parrish; Jason C White; Mehmet Isleyen; Martin P N Gent; William Iannucci-Berger; Brian D Eitzer; Jason W Kelsey; Maryjane Incorvia Mattina
Related Documents :
18358498 - Contamination and potential biodegradation of polycyclic aromatic hydrocarbons in mangr...
4006058 - Mutagenic activity and polycyclic aromatic hydrocarbon levels in urine of workers expos...
17144278 - Source allocation by least-squares hydrocarbon fingerprint matching.
18200848 - Atmospheric polycyclic aromatic hydrocarbons in north china: a winter-time study.
19192788 - Enrichment of uranium in particulate matter during litter decomposition affected by gam...
12220828 - Feasibility of metal recovery from soil using dtpa and its biostability.
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2005-12-06
Journal Detail:
Title:  Chemosphere     Volume:  64     ISSN:  0045-6535     ISO Abbreviation:  Chemosphere     Publication Date:  2006 Jul 
Date Detail:
Created Date:  2006-07-03     Completed Date:  2006-08-24     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  England    
Other Details:
Languages:  eng     Pagination:  609-18     Citation Subset:  IM    
Department of Soil and Water, Connecticut Agricultural Experiment Station, CAES, 123 Huntington Street, New Haven, 06504, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Cucumis sativus / growth & development*
Cucurbita / growth & development*
Molecular Weight
Oligochaeta / chemistry*
Polycyclic Hydrocarbons, Aromatic / analysis*
Soil Pollutants / analysis*
Reg. No./Substance:
0/Polycyclic Hydrocarbons, Aromatic; 0/Soil Pollutants

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  New TiO2/C sol-gel electrodes for photoelectrocatalytic degradation of sodium oxalate.
Next Document:  Evaluation of the effect of small organic acids on phytoextraction of Cu and Pb from soil with tobac...