Effects of soil dilution and amendments (mussel shell, cow bone, and biochar) on Pb availability and phytotoxicity in military shooting range soil.
作者： Mahtab Ahmad , Sang Soo Lee , Jae E. Yang , Hee-Myong Ro , Young Han Lee
DOI: 10.1016/J.ECOENV.2012.01.003
关键词: Agronomy 、 Bioavailability 、 Soil water 、 Biochar 、 Soil quality 、 Germination 、 Soil test 、 Soil conditioner 、 Chemistry 、 Phytotoxicity
摘要: Bioavailability and bioaccessibility determine the level of metal toxicity in soils. Inorganic soil amendments may decrease bioavailability enhance quality. This study used mussel shell, cow bone, biochar to reduce lead (Pb) highly contaminated military shooting range Korea. Water-soluble 1-M ammonium nitrate extractions, a modified physiologically based extraction test (PBET) were performed Pb soil, respectively. Active C was also measured evaluate effects on biological The diluted serial with uncontaminated for bioassays. Seed germination root elongation tests using lettuce (Lactuca sativa) showed increases percentage length treated amendments. Biochar most effective increased seed by 360% 189% compared unamended soil. Up 20% dilution resulted more than 50% germination. soils decreased 92.5% 48.5% 84.8% 34.5% 75.8% 12.5% biochar, respectively, We found that availability can be reduced effectively tested or alternately, thereby decreasing risk ecotoxicity. Furthermore, increasing active from revitalized Pb.
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