Studies on Oxidation States of Cobalt Extracted from Soils with EDTA·HOAc·NH4OAc

来源 :土壤圈:英文版 | 被引量 : 0次 | 上传用户:hll10
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
A method determining di-and tri-valent cobalt extracted from soils with EDTA·HOAc·NH4OAc solution (pH4.65) was developed based on the difference of the stability constants of Co(II) EDTA and Co(III) EDTA.Analytical results indicated that soil co
其他文献
In the present work,the adsorption of sulfate and fluoride by two oxisols was studied,and during the adsorption OH^- released from soils were measured and the c
A new inorganic phosphorus(IP) fractionation scheme developed by Jiang and Gu wasused in an incubation experiment to investigate the transformation of applied P
Results showed that ammonia loss from urea broadcast into floodwater and incorporated into soil at transplanting was as high as 40% of applied N,and the corresp
It has long been recognized that pedogeochemistry is closely related with human health.Based on analytical data,the weathering or soil forming processes fall in
The clay mineral association,oxides of clay fraction and surface charge properties of 7 soils,which are developed from granite,located at different altitudesof
Being divided into three groups-strong,moderate and weak-according to the different kinetic parameters (Fmax,km,Cmin) of potassium uptake by crops,21 cultivars
Field experiments were conducted in a maize (Zea mays L.)field of a calcareous fluvo-aquic soil in North China Plain for studying the fate and ammonia loss of u
The effect of irrigation water quality on unsaturated hydraulic conductivity (HC) of undisturbed soil in field was studied.Results show that within the operatin
The relationship between iron oxides and surface charge characteristics in variable charge soils (latosol and red earth) was studied in following three ways.(1)
<正> INTRODUCTION Soil acidification due to acid deposition has been one of the major environmental prob-lems concerned by soil scientists and ecologists for th