胡敏酸

实验结果表明，富啡酸在pH为3～8.4之间对金有强烈溶解螯合作用。胡敏酸对金的吸附率达98%以上。

The test result indicates that fulvic acid plays great Part of dissolution and chelation on gold during the range of pH value is from 3 to 8.4 . The adsorption rate of humic acid is above 98 % which is the aggregation of gold .

实验表明，在pH2.43时，高岭石表面与胡敏酸表面之间的静电斥力逐渐增强，高岭石吸附胡敏酸的主要机制以配位体交换、氢键和疏水性作用为主。

According to the results obtained , pH2.43 , electrostatic repulsion between the surface of kaolinite and humic acid gradually strengthened , the main mechanisms of humic acid adsorption on kaolinite were mainly ligand exchange , hydrogen and hydrophobic .

同时，Hg的释放受不同胡敏酸种类和粘土矿物类型的影响。

Meanwhile , Hg releases was independent of types of humic acid and clay minerals .

从腐殖质组成来看，胡敏酸和富里酸比值（HA／FA）随堆肥腐熟而呈增加趋势，说明高温堆肥有利于胡敏酸形成，腐殖质质量在提高。

Increase of HA / FA indicated that high-temperature compost helps to produce Humo acid , and therefore improve humus quality .

应用XAFS研究草酸根和胡敏酸对As（V）在红壤中吸附的影响

Effect of oxalate and humic acid on arsenate sorption by a red soil using XAFS method

长期施用化肥可增加土壤胡敏素和胡敏酸的含量，HA／FA比值亦得到提高。

Long term application of chemical fertilizer could increase the contents of humic acid , humin and the ratio of HA / FA .

采用离子交换平衡法研究了在不同酸度、离子强度、温度条件下胡敏酸（HA）与Fe3+络合反应的稳定性和热力学特征。

The stability and thermodynamics of humic acid coordination with Fe 3 + ion at different acidity , ion strength and temperature were studied , using ion-exchange equilibrium method .

胡敏酸结合1个Pb离子所释放的H+平均数小于1，且与溶液温度、离子强度有关。

The average H + released by humic acid with a Pb2 + was less than 1 , and affected by both the temperature and ionic strength of the solution .

结果表明，蒙脱石对胡敏酸各级分的吸附可用单表面Langmuir、双表面Langmuir和Freundlich方程来描述。

The results showed that the absorption could be described by single surface Langmuir , double surface Langmuir and Freundlich equations .

胡敏酸的E4/E6在有机物料处理间变化规律不明显，但其值都大于CK，随培肥年限的增加，处于动态的变化。

The ratio of E4 / E6 were no obvious difference in all organic manure treatments , but higher than that of CK , and kept dynamic changes .

培养试验中，施用猪粪后全土有机质和胡敏酸的δ13C值也呈下降趋势，而施用玉米秸秆后则呈增加趋势。

And in the incubation experiment ,δ 13C value of SOM and HA decreased after pig manure application , but increased after corn stalk application .

与未施肥的处理相比，田间施用有机肥以及有机肥配施化肥使全土有机质和胡敏酸的δ13C值均呈下降趋势；

Compared with unfertilized control plot , δ 13C value of SOM and HA decreased after the application of organic and organic + inorganic fertilizer .

长期施用有机肥或配施化肥，可促进土壤胡敏酸、富里酸和胡敏素积累，提高HA／FA比值。

Long term application of organic manure or combination with chemical fertilizer could increase the contents of humic acid ( HA ), fulvic acid ( FA ), humin and raise the ratio of HA / FA .

通过室内培养实验，应用δ13C方法研究了玉米秸秆分解期间，土壤中胡敏酸（HA）和富里酸（FA）数量的动态变化。

In an incubation experiment , dynamic change in amounts of soil organic matter ( SOM ), HA and FA were studied during corn stalk ( CS ) decomposition in dark-brown soil by δ 13C method .

化肥和有机肥都能增加土壤腐殖酸含量，化肥促进腐殖酸中富啡酸（FA）含量增加而对胡敏酸（HA）影响不大，造成HA/FA下降；

Both chemical and organic fertilizers increased the soil humus content , but the former stimulated the accumulation of humic acid ( HA ), and showed little effect on the fulvic acid ( FA ), thus decreased the HA / FA ratio ;

胡敏酸对高岭石吸附铜离子的强化机制是，高岭石端面形成了AlHACu三元配合物（B型），与传统的诸如pH、离子强度与离子初始浓度等介质条件影响不同。

The enhancement mechanism of copper adsorption on kaolinite surface was the formation of ternary complexes of ( Al )()() - HA-Cu ( B-type ) at the edge of kaolinite , unlike the effects of the traditionally-considered factors such as pH , electrolyte concentration and initial ion concentration .

采用元素分析，1H&NMR和FTIR研究了3种水稻土中水溶性有机质（DOM）的组成及结构特征，并与富里酸（FA）、胡敏酸（HA）进行了比较。

Dissolved organic matter ( DOM ) from three paddy soils was studied by elemental composition , FTIR and 1H & NMR analysis , in comparison with fulvic ( FA ) and humic acids ( HA ) . There is a large discrepancy between DOM , FA and HA .

结果表明，玉米秸从腐解15～60d，H/F明显增大，胡敏酸结构趋于复杂；

The results showed that corn straw decomposing from 15 to 60 days , the ratio of humic acid to fulvic acid was increased , the structure of humic acid tended to be complex ;

研究了天然有机物胡敏酸和富里酸，螯合剂EDTA和DTPA和四种简单有机酸对紫色土镉的溶出效应和吸附解吸行为的影响。

Summary The effects of several organic substances , including natural humic acid and fulvic acid , artificial chelating agents EDTA and DTPA , and four simple organic acids on the solubility and adsorption desorption behaviors of purplish soil for cadmium were studied .

结果表明：相同pH下，Fe2O3、MnO2或Al2O3固体吸附剂对腐殖酸的吸附量随着腐殖酸（胡敏酸HA和富里酸FA）有机碳浓度的增加而增加；

The mechanism of humic acid ( HA ) and fulvic acid ( FA ) adsorption by Fe_2O_3 , MnO_2 or Al_2O_3 solid sorbent in solution different in pH were studied . The results show that the adsorption increased with the organic carbon concentrations of HA and FA .

整体上深度增加时，胡敏酸的氧化程度降低，稳定性增强，而AOM的芳化度、缩合度和稳定性均有所下降。

As a whole , the oxidation decrease with the depth increasing , the chemical stability increased correspondingly in the humic acids and fulvic acids . The aromatic degree , polymerization degree and chemical stability decreased in AOM , though .

胡敏酸对钾素耗竭土壤固定外源钾的影响

Effect of Humic - Acid on Potassium Fixation in K-Depleted Soil

长期石油污染土壤中胡敏酸结构特征的研究

Structural Characteristics of Humic Acids from a Long-Term Petroleum Contaminated Soil

胡敏酸的结构特征及其吸附行为

Structure Characterization of Soil Humic Acids and Adsorption Equilibria on Phenanthrene

胡敏酸对铜的鱼鳃生物有效性影响的计算机模拟

Computer Simulation of HA Influence on Copper Bioavailability to the Fish Gills

胡敏酸的热稳定性好，热分解区间较宽。

Humic acid processes good thermal stability and wider thermal decomposition range .

施用有机肥料对土壤胡敏酸结构特征的影响&胡敏酸的光学性质

Effect of application of organic manures on the structural characteristics

一维饱和多孔介质中胡敏酸的运移研究

Study on the transportation of humic acid in porous media

胡敏酸对土壤和矿物粘粒分散的影响

Humic acid effect on dispersion of soil and mineral clay

土壤含水量和胡敏酸对有机氯农药降解的影响

Effects of soil water content and humic acid on degradation of organochlorine pesticides