水土保持学报2017，Vol.31Issue(4)：338-344,7.DOI:10.13870/j.cnki.stbcxb.2017.04.053
浓度与pH互作下表没食子儿茶素没食子酸脂(EGCG)对黄壤Al、Fe、Mn迁移的影响
Effects of Epigallocatechin Gallate (EGCG) on Migration of Al, Fe and Mn in Yellow Earth Under the Interactions of Concentrations and pH Values
摘要
Abstract
The concentrations of Al,Fe and Mn in Yellow Earth under the leaching environment was analyzed,and the effects of Epigallocatechin Gallate (EGCG) on the migration of Al,Fe and Mn under the interactions of concentrations and pH values.A completely randomized experiment with two factors was carried out,in which 48 EGCG solutions combined from different concentrations and pH values was designed to leach the Yellow Earth discontinuously.The concentrations of Al,Fe and Mn in leaching solutions were measured to analyze the migration volumes and migration processes of Al,Fe and Mn.The results indicated that the migration volumes of Al,Fe and Mn in Yellow Earth varied significantly under the interactions of concentrations and pH values.The EGCG solution with high concentration and high pH value would facilitate the migration of Al and Fe,whose volumes were 180.24 mg/L and 41.15 mg/L,respectively.However,the EGCG solution with high concentration and low pH value would be conducive to the migration of Mn,whose volume was 4.50 mg/L.The migration volumes of the three elements under the different interactions of concentrations and pH values followed the order of Al＞Fe＞Mn.Generally speaking,the concentrations of Al and Mn in the leachate decreased gradually in the middle-late leaching stage.However,the Fe concentrations in the leachate first increased and then decreased in the leaching processes,as the EGCG solutions with middle concentration and high pH,high concentration and high pH,and high concentration and middle pH;while the Fe concentrations showed a significant rising trend,when the concentrations of EGCG interacted with a lower pH value.It is suggested that the leaching of EGCG has a positive effect on the treatment of soil Al/Mn toxicity in a certain degree,especially at the early stage of leaching.Whereas,EGCG could not be used to control Al/Mn toxicity in soil at the same time.关键词
EGCG/Al、Fe、Mn/迁移/互作效应Key words
EGCG/Al, Fe, Mn/migration/interaction分类
农业科技引用本文复制引用
张俊思,袁大刚,翁倩,张楚,王昌全,涂俊誉,邓勇刚,何刚..浓度与pH互作下表没食子儿茶素没食子酸脂(EGCG)对黄壤Al、Fe、Mn迁移的影响[J].水土保持学报,2017,31(4):338-344,7.基金项目
国家自然科学基金项目(41372130) （41372130）
