12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Impact of carbon nanomaterials on the behaviour...
View graph of relations

« Back

Impact of carbon nanomaterials on the behaviour of C-14-phenanthrene and C-14-benzo-[a] pyrene in soil

Research output: Contribution to journalJournal article

Published

Journal publication date03/2011
JournalEnvironmental Pollution
Journal number3
Volume159
Number of pages10
Pages706-715
Original languageEnglish

Abstract

The impact of fullerene soot (FS), single-walled (SWCNTs) and multi-walled (MWCNTs) carbon nano-tubes on the behaviour of two C-14-PAHs in sterile soil was investigated. Different concentrations of carbon nanomaterials (0, 0.05, 0.1 and 0.5%) were added to soil, and C-14-phenanthrene and C-14-benzo[a] pyrene extractability assessed over 80 d through dichloromethane (DCM) and hydroxypropyl-beta-cyclo-dextrin (HPCD) shake extractions. Total C-14-PAH activity in soils was determined by combustion, and mineralisation of C-14-phenanthrene was monitored over 14 d, using a catabolically active pseudomonad inoculum. No significant loss of C-14-PAH-associated activity from CNM-amended soils was observed over the 'aging' period. CNMs had a significant impact on HPCD-extractability of C-14-PANS: extractability decreased with increasing CNM concentration. Additionally, C-14-phenanthrene mineralisation was inhibited by the presence of CNMs at concentrations of >= 0.05%. Differences in overall extents of C-14-mineralisation were also apparent between CNM types. It is suggested the addition of CNMs to soil can reduce PAH extractability and bioaccessibility, with PAH sorption to CNMs influenced by CNM type and concentration. (C) 2010 Elsevier Ltd. All rights reserved.