PMID: 11931448Apr 5, 2002Paper

In situ stabilization of soil lead using phosphorus and manganese oxide: influence of plant growth

Journal of Environmental Quality
Ganga M Hettiarachchi, Gary M Pierzynski

Abstract

In situ stabilization of Pb contaminated soils can be accomplished by adding P and Mn(IV) oxide. However, the long-term efficacy of in situ stabilization under continual P removal through plant growth is unknown. Moreover, the effects these treatments have on phytoavailability of other metals (Cd and Zn) commonly associated with Pb in soil are not well understood. Greenhouse experiments using sudax [Sorghum vulgare (L.) Moench] and Swiss chard [Beta vulgaris (L.) Koch] were carried out to evaluate the effects of plant growth on soil Pb bioavailability to humans after addition of P and other amendments, and the effects of these treatments on Pb, Cd, and Zn phytoavailability in three metal-contaminated soils. Eight treatments were used: zero P; 2500 mg of P as triple superphosphate (TSP); 5000 mg of P as TSP or phosphate rock (PR); 5000 mg of Mn oxide/kg; and combinations of Mn oxide and P as TSP or PR. The addition of P and/or Mn oxide significantly reduced bioavailable Pb, as measured by the physiologically based extraction test (PBET), in soils compared with the control even after extensive cropping. The PBET data also suggested that removal of P from soluble P sources by plants could negate the beneficial effects of P on bioa...Continue Reading

Citations

May 24, 2011·International Journal of Phytoremediation·Mateus Rosas Ribeiro FilhoNilton Curi
Dec 11, 2013·Journal of Environmental Management·Evelina BrännvallJurate Kumpiene
Apr 7, 2009·Waste Management·Valtcho D ZheljazkovPatrick D Gerard
Jul 29, 2009·Journal of Environmental Sciences (China)·Shibao ChenYizong Huang
Oct 9, 2007·Journal of Environmental Sciences (China)·Xiu-Lan Zhao, Saigusa Masaihiko
Mar 16, 2007·Journal of Hazardous Materials·Maria ChrysochoouDennis G Grubb
Sep 18, 2012·Environmental Pollution·Michael KomárekVojtěch Ettler
Jul 4, 2015·Environmental Science & Technology·Heather HenryKirk G Scheckel
Apr 6, 2006·Environmental Pollution·I R SneddonE Valsami-Jones
Jan 10, 2012·Ecotoxicology and Environmental Safety·Hui MingRavi Naidu
Dec 25, 2015·Environmental Science. Processes & Impacts·E Brännvall, J Kumpiene
Oct 25, 2013·Journal of Toxicology and Environmental Health. Part B, Critical Reviews·Kirk G ScheckelSophia M Serda

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