Influence of citric acid amendments on the availability of weathered PCBs to plant and earthworm species

International Journal of Phytoremediation
Jason C WhiteMaryjane Incorvia Mattina

Abstract

A series of small and large pot trials were conducted to assess the phytoextraction potential of several plant species for weathered polychlorinated biphenyls (PCBs) in soil (105 microg/g Arochlor 1268). In addition, the effect of citric acid on PCB bioavailability to both plants and earthworms was assessed. Under small pot conditions (one plant, 400 g soil), three cucurbits (Cucurbita pepo ssp pepo [zucchini] and ssp ovifera [nonzucchini summer squash], Cucumis sativus, cucumber) accumulated up to 270 microg PCB/g in the roots and 14 microg/g in the stems, resulting in 0.10% contaminant removal from soil. Periodic 1 mM subsurface amendments of citric acid increased the stem and leaf PCB concentration by 330 and 600%, respectively, and resulted in up to a 65% increase in the total amount of contaminant removed from soil. Although citric acid at 10 mM more than doubled the amount of PCB desorbed in abiotic batch slurries, contaminant accumulation by two earthworm species (Eisenia foetida and Lumbricus terrestris) was unaffected by citric acid at 1 and 10 mM and ranged from 11-15 microg/g. Two large pot trials were conducted in which cucurbits (C. pepo ssp pepo and ssp ovifera, C. sativus) and white lupin (Lupinus albus) were gro...Continue Reading

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Citations

Jul 7, 2009·Applied Microbiology and Biotechnology·Emiko MatsumotoHiroshi Oyaizu
Sep 24, 2013·Journal of Hazardous Materials·T WoignierM Lesueur-Jannoyer
Nov 24, 2006·International Journal of Phytoremediation·Jason W KelseyJason C White
Dec 21, 2010·International Journal of Phytoremediation·Ilya B SlizovskiyJason W Kelsey
May 10, 2012·International Journal of Phytoremediation·Mehmet Isleyen, Pinar Sevim
Dec 14, 2012·Environmental Engineering Science·Tomasz Kalinowski, Rolf U Halden
Jan 9, 2016·Environmental Science and Pollution Research International·Honglin HuangShuzhen Zhang
Apr 29, 2011·Journal of Hazardous Materials·Zhenyu WangBaoshan Xing
May 23, 2012·Environmental Toxicology and Chemistry·Mehmet IsleyenJason C White
Jun 17, 2006·Journal of Hazardous Materials·Jason C WhiteMaryjane Incorvia Mattina
Apr 23, 2013·Environmental Pollution·Richard E MeggoDingfei Hu
May 21, 2010·The Science of the Total Environment·Sarah A FickoBarbara A Zeeb
Jul 16, 2016·International Journal of Phytoremediation·Magdalena UrbaniakAnna Wyrwicka
Jun 5, 2010·Journal of Environmental Monitoring : JEM·Yingxu ChenChaofeng Shen
Jul 26, 2017·Microscopy Research and Technique·Elizandra Silva da PenhaPatrícia Teixeira de Oliveira
Jan 6, 2010·Journal of Environmental Quality·Jennifer E LowBarbara A Zeeb
May 11, 2017·Environmental Science and Pollution Research International·Jitendra K SharmaAsha A Juwarkar
May 29, 2010·Environmental Science & Technology·Jason C White
Jan 10, 2012·Journal of Agricultural and Food Chemistry·Mehmet IsleyenJason C White
May 31, 2007·Environmental Science & Technology·Jason C WhiteJason W Kelsey

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