Dynamics of Humic Substance-Complexed Copper and Copper Leaching During Composting of Chicken Manure

作     者：A.S.ALI 

作者机构：College of Resource and EnvironmentNorthwest A & F University 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：2010年第20卷第2期

页      面：245-251页

核心收录：

学科分类：0818[工学-地质资源与地质工程] 09[农学] 090101[农学-作物栽培学与耕作学] 0903[农学-农业资源与环境] 0901[农学-作物学] 

基　　金：Project supported by the Ministry of Science and Technology of China (No. 2007BAD89B16) the National Natural Science Foundation of China (No. 39800093) the National Undergraduate Innovational Experimentation Program of China the Youth Planning Program of Northwest A & F University,China 

主　　题：堆肥过程 浸出过程 络合铜 腐植物质 鸡粪 腐殖酸 氢氧化钠 水提取物 

摘      要：Chicken manure was composted for 110 d to evaluate changes in organic carbon (C) and humic substance-complexed copper (HS-Cu) extracted with water,sodium hydroxide (NaOH),and sodium pyrophosphate and sodium hydroxide mixture (Na 4 P 2 O 7-NaOH).The average HS-Cu content from the Na 4 P 2 O 7-NaOH extraction accounted for 46.8% of the total Cu in the compost,followed by those from the NaOH and water extractions,which accounted for 34.5% and 6% of the total Cu in the compost,***-Na 4 P 2 O 7-extractable HS-Cu increased throughout the composting ***-extractable HS-Cu increased during the first 50 d of composting and then leveled ***-extractable HS-Cu enhanced during the first 21 d and then ***-extractable HS-Cu was not correlated to NaOH-or NaOH-Na 4 P 2 O 7-extractable organic *** average amount of Cu leached from the compost was about 20% of the total Cu in the chicken manure and Cu leaching increased during the first 35 d of composting and then *** of Cu was significantly correlated to the concentrations of HS-Cu extracted with NaOH and water,but was not correlated to the concentration of HS-Cu extracted with NaOH-Na 4 P 2 O ***,NaOH-and water-extractable HS-Cu were relatively labile and NaOH-Na 4 P 2 O 7-extractable HS-Cu was relatively *** process after rapid decomposition could result in low potential of Cu leaching because of formation of more NaOH-Na 4 P 2 O 7-extractable HS-Cu.