胡敏

采用原子力显微镜观察到了吸附在胡敏酸膜表面的DNA分子。

The DNA absorbed on HA molecular film has been observed by AFM .

以胡敏酸膜为模板，可以吸附DNA分子。

As a template , DNA molecule can be adsorbed on humic acid film .

pH值和离子强度对胡敏酸与芘之间相互作用的影响

Effects of pH values and ion strengths on bindings between humic acid and pyrene

泥炭中胡敏酸与纤维素δ~（13）C序列初步对比

Preliminary comparison of the δ ~ ( 13 ) c sequence of humic acid with that of cellulose in peat

土壤胡敏酸对Pb的吸附特征与影响因素

Adsorptive Characteristics and Influence Factors of Humic Acid on Lead in Soil

胡敏酸能抑制小白菜对镉的吸收，降低小白菜地上部Cd含量；

Humus could affect greatly the uptake of Cd of Brassica chinensis in Cd contaminated soil .

微生物及胡敏酸E4／E6值在农业废弃物静态高温腐解中的变化

Changes of microorganisms and E_4 / E_6 in agricultural waste materials during composting in static state with high temperature

其类型属于Rp型胡敏酸。

CCSA HA is of the Rp type of humic acids .

结果表明，在整个腐解过程中土壤胡敏酸由A型转化为P型又转化为A型，呈现由复杂到简单又到复杂的变化趋势。

The results showed that the type of humic acid changed from type A to B and then to A during the whole decaying periods of corn straw .

采用Pb离子选择电极研究了Pb离子在胡敏酸上的吸附量和动力学特性，以及溶液pH、温度、离子强度对吸附的影响。

Adsorptive capacity and dynamics characteristics of humic acid on Pb2 + in soil are studied by using a lead ion selective electrode .

两种胡敏酸对2,4-D的吸附特性及机理研究

Adsorption Characteristics and Mechanism of 2,4-D on Two Types of Humic Acid

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 .

高岭石胡敏酸复合体的红外光谱出现了明显的C-H振动吸收峰；

There existed apparent absorption peaks of hydrocarbon in the IR ;

A组胡敏酸占胡敏酸总量的52%以上，B组占30%，C组占5%～13%。

The relative content of A , B and C group of humic acid fraction was 52 % , 30 % and 5o % ~ 13 % of the total humic acid , respectively .

本实验所用的DOM是用从滇池沉积物中提取的胡敏酸溶解制备的。

The DOM used in this study was prepared using a humic acid ( HA ) extracted from a Dianchi sediment .

冲田水稻土胡敏酸的E（465）低于圩田水稻土；

3 ) The spectral absorption near 465 ) nm ( E_ ( 465 )) of humic acid in alluvial paddy soil was lower than that in polder paddy soil .

灰色胡敏酸对Hg的络合容量最低，但络合稳定性最高，故所结合Hg的环境活性最弱。

The complex stability constant of grey humic acid for Hg is the highest so the Hg environmental activity is the lowest .

胡敏酸A4／A6比

A4 / A6 ratio of humic acid

一种是黑色胶状胡敏酸，它在pH小于3时沉淀。另一种是褐色可溶性富啡酸，它在酸碱范围内稳定。

One of them is black colloidal humus acid which is precipitated at pH < 3 , and the other is brown soluble fulvic acid which is stable both in acid and alkali environment .

而施入胡敏酸后，Cd毒性逐渐减弱，黑麦草中的叶绿素含量及黑麦草生物量逐渐增加。

On the contrary , Cd toxicity was reduced as a result of addition of humic acid , and the concentration of chlorophyll in ryegrass shoots and the biomass of ryegrass increased consequently .

在其它条件相同时，与旱地条件下的相比，渍水条件下腐解产物的HA/FA大多较宽，而胡敏酸的光密度（E4）值则较小。

Keeping other factors constant , the humus formed under submerged conditions generally had a higher HA / FA ratio and a lower optical density ( E_4 ) of HA than that formed under upland conditions .

采用间歇法研究了汞在腐殖酸两组分（富里酸FA、胡敏酸HA）上的吸附解吸量和动力学特征以及介质pH的影响。

The amount and kinetics characteristics of mercury adsorption and desorption on two species of humic acids ( FA and HA ) and the effect of pH were studied by batch technique .

用离子交换平衡法研究了不同pH下胡敏酸与锌、镉单独及复合存在下形成络合物的稳定性及配位数。

The stability and co-ordination number of the complex compounds of humic acid with Zn ~ ( 2 + ) and / or Cd ~ ( 2 + ) at different pH levels were determined with the cation-exchange equilibrium method .

pH值的改变对酸碱不可溶的粗胡敏素影响不大，胡敏酸为溶于碱而不溶于酸的物质，当反应条件趋向碱性环境时，部分胡敏酸溶解而导致吸附减小。

To have little effect for change of pH value of acid insoluble crude HM , HA alkali soluble and acid insoluble substance , when reaction conditions tend to alkaline environment , part of the HA dissolution and lead adsorption decreases .

研究了低分子量有机酸草酸、柠檬酸、乙酸及高分子量有机酸胡敏酸对黑麦草（Loliumloinn）生长过程中Cd毒性的影响。

Effects of low molecular weight organic acids ( oxalic acid , citric acid , and acetic acid ) and higher molecular weight organic acid ( humic acid ) on the toxicity of Cd during ryegrass growth were studied .

但受容量因素制约，灰色胡敏酸对Hg的络合稳定性将因Hg/灰色胡敏酸相对比例的升高而急剧下降。

But due to its limited complex capacity , the complex stability constant of grey humic acid with Hg will greatly drop with the increase of the mass ratio of Hg / grey humic acid .

采用红外示差光谱、13C-核磁共振波谱和激光解吸质谱对玉米秸秆施入土壤后土壤胡敏酸（HA）的谱学特征的动态变化进行了研究。

Spectroscopy measurements ( Fourier transform infrared differential spectroscopy , Carbon-13 nuclear magnetic resonance spectrometry , Matrix-assisted laser desorption / ionization-time of flight mass spectrometry ) were performed to study the humic acids in the soil applied with corn stalk .

随复合体粒径的增大，游离态胡敏酸类型的变化序列为A型（粘粒）→A型（粉粒）→RP型（细砂）；

The type of free humic acid changed with the increase of complex particle diameter was the following order : A type ( clay )→ A type ( silt ) → Rp type ( fine sand );

DTA和TG法测定不同土壤胡敏酸的热分解特性表明，不同土壤胡敏酸的DTA、DTG曲线都有共同相似的热效应峰和失重峰。

The humic acid pyrolytic properties observed by means of DTA and TG methods in different soils indicated that the humic acid from different soils showed similar heat effect peak and weight loss peak in DTA and DTG curves .

有机肥配施NPK、磷钾及氮磷钾化肥和撂荒土壤：胡敏酸碳/腐殖酸碳比值上升，富里酸碳/腐殖酸碳比值下降；

For treatments of combing organic fertilizer with NPK and PK , NPK and abandoned land , the rate of humic acid carbon to humus acid carbon increased and opposite to rate of fulvic acid carbon to humus acid carbon .