Contaminant metals in soil pose a serious risk to public health and groundwater supplies. https://www.smart-fertilizer.com/articles/extraction-method The soil was clean, but the treated water was still toxic. It is well known that heavy metals have an affinity for different compartments of soil. Soil contamination by metallic elements including lead occurs frequently. https://aiche.onlinelibrary.wiley.com/doi/abs/10.1002/ep.670110411 In chemical extraction, the selection of extracting agents including organic/inorganic acids, chelating agents, and surfactants is most important to extract contaminants from the soil to the aqueous phase (Arwidsson et al., 2010, Di Palma et al., 2011, Lei et al., 2008). With chemical soil washing, soil particles are cleaned by selectively transferring the contaminants from the soil into solution [10][13]. However, the strong bonds between the soil and metals make with rifle range soil Lead extraction from difierent lead-contaminated soil using 1 gram of soil with 10 ml of different EDTA solution The molar amount of extracted metals with water and 0.005 M EDTA solution at pH value of 3.15 for EDTA and 2.7 for water To enrich mRNA, subtractive hybridization of rRNA was most efficient. From your analysis of the soil samples obtained from the site, it was found that lead is present in the soil as lead (IV) oxide and lead sulphate. The accumulation of heavy metals in soil is a serious environmental problem. The land is to be remediated by a soil washing process to remove lead from the soil. The removal efficiency of humic acids was 94 to 98% for all soils tested. The effectiveness of washing is closely related to the ability of the extracting solu-tion to dissolve the metal contaminants in soils. Key steps in the isolation of total RNA were low-pH extraction (pH 5.0) and Q-Sepharose chromatography. Here, we report an efficient method for extracting high-quality mRNA from soil. Both treated soils passed the EPA's … The lead is to be precipitated as a lead salt and stored for proper disposal. Testing determined that a batch‐extraction process using chloride solutions reduced the lead in the high‐silt, high‐clay soil from 67,400 to 1,500–2,000 mg/kg and in the high‐sand soil from 14,400 to 600 mg/kg. Extraction using chelants is seen as a remediation option; however, it is often hampered by access to the contaminants that are shielded by the soil … Soil extraction of lead contaminated soil collected from sites near an abandoned battery recycling and secondary lead-smelting factory was investigated for potential use in decontaminating soil at the sites. 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