1. Ali H, Khan E, Sajad MA (2013) Phytoremediation of heavy metals-concepts and applications. Chemosphere 91:869–881
2. ASTM International (ASTM) (2007) Standard Test Method for pH of Soils. D4972-01. http://enterprise.astm.org/filtrexx40.cgi?+REDLINE_PAGES/D4972.htm
3. ASTM International (ASTM) (2009) Standard Guide for Conducting Terrestrial Plant Toxicity Tests. E1963-09. http://enterprise.astm.org/filtrexx40.cgi?+REDLINE_PAGES/E1963.htm
4. ASTM International (ASTM) (2010) Standard Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass. D2219-10. http://enterprise.astm.org/filtrexx40.cgi?+REDLINE_PAGES/D2216.htm
5. Bednar AJ, Medina, VF, Ulmer-Scholle DS, Frey BA, Johnson BL, Brostoff WN, Larson SL (2007) Effects of organic matter on the distribution of uranium in soil and plant matrices. Chemosphere 70:237–247