Cu and Zn Speciation in an Acid Soil Amended withAlhalline Biosolids  

Cu and Zn Speciation in an Acid Soil Amended with Alkaline Biosolids

作　　者：LUO YONGMINGInstitute of Soil Science, the Chinese Academy of Sciences, Nanjing 210008 (China) 

出　　处：《Pedosphere》2002年第2期165-170,共6页土壤圈（英文版）

基　　金：National Natural Science Foundation of China(Nos.49831070 and 40125005);theNational Key Basic Research Support Foundation of China (No. G1999011807);the Jiangsu Provincial Foundation for Young Scientists (No. BQ98050).

摘　　要：Fractionation of metals in acid sandy loam soil amended withalkaline-stabilised sewage sludge biosolids was conducted in order toassess metal bioavailability and environmental mobility. Soilsolution was extracted by a centrifugation and filtration technique.Meal speciation in the soil solution was determined by a cationexchange resin method. Acetic acid and EDTA extracting solutions wereused for extraction of metals in soil solid surfaces. Metaldistribution in different fractions of soil solid phase wasdetermined using a three-step sequential extraction scheme.Fractionation of metals in a granite-derived acid sandy loam soil amended with alkaline-stabilised sewagesIudge biosolids was conducted in order to assess metal bioavailability and environmental mobility Soilsolution was extracted by a centrifugation and filtration technique. Metal speciation in the soil solution wasdetermined by a cation exchange resin method. Acetic acid and EDTA extracting solutions were used forextraction of metals in soil solid surfaces. Metal distribution in different fractions of soil solid phase wasdetermined using a three-step sequential extraction scheme. The results show that the metals in the soilsolution existed in different fractions with variable lability and metals in the soil solid phase were also presentin various chemical forms with potentially different bioavailability and environmental mobility Alkaline-stabilised biosolids could elevate solubility of Cu and proportion of Cu in organically complexed fractionsboth in soil liquid and solid

关 键 词：alkaline-stabilised sewage sludge chemical speciation Cu granite soil 

分 类 号：S153[农业科学—土壤学]