化学吸附

The graft polymerization of acrylonitrile on Crosslinked polyvinyl alcohol microspheres CPVA microspheres was performed by using cerium ammonium sulfate as initiator, and grafted microspheres CPVA-g-PAN were prepared. Subsequently, the grafted PAN was converted into poly via amidoximation reaction with hydroxylamine hydrochloride as reagent, resulting in the functional microspheres CPVA-g-PAO. The chemical structure and physicochemistry characters were adequately characterized with infrared spectrum, scanning electron microscope and determining Zeta potential. The effects of main factors on the amidoximation transform reaction of the grafted PAN were researched with emphasis, and the adsorption property of the functional microspheres CPVA-g-PAO for some biomolecules was examined preliminarily with uric acid as a model biomolecule.

以硫酸铈铵为引发剂，实施了丙烯腈在交联聚乙烯醇微球表面的接枝聚合，制备了接枝微球CPVA-g-PAN，然后以盐酸羟胺为试剂，通过偕胺肟化转变，将接枝的PAN转变为聚偕胺肟，制得了接枝有聚偕胺肟的功能微球CPVA-g-PAO，采用红外光谱法、扫描电子显微镜及Zeta电位测定等法，对功能微球CPVA-g-PAO的化学结构及物理化学特性进行了表征，重点考察了各主要因素对接枝PAN的偕胺肟化转变反应的影响，也以脲酸为模型分子，初探了功能微球CPVA-g-PAO对生物分子的吸附性能。

It was found that the bioaccumulation of Ct on Spirulina platensis involved two steps:rapid adsorption and slow absorption. Chromic compounds with weaker chemical bond had higher bioaccumulation efficiency. Under the same algal cell concentration, Crbioaceumulation rosed up with Crconcentration. On the other hand, with Cr concentration not changed, the total bioaccumulation of Cr on Spirulina platensis increased with algal cell concentration, but the Cr bioaceumu lation on unit algae reduced.

发现螺旋藻对Cr的生物富集主要经历了快速的吸附和缓慢的吸收两个步骤；化学键较弱的Cr化合物具有较高的富集效率；藻细胞浓度一定时，随着Cr浓度的增加，单位重量螺旋藻对Cr的富集量不断增加，最后趋于饱和；当Cr浓度一定时，随着藻细胞浓度的增加，螺旋藻对Cr的总富集量逐渐增加而单位重量藻体的富集量减少。

A highly active hydrogen added catalytic nanometer Ru/C is made by reducing metal ruthenate, getting nanometer ruthenate metal glue under the protection of surface activator, filtering, washing glue solution drawing by the carrier to get highly scattered loading nanometer ruthenate metal catalyst.

本发明涉及一种高活性加氢催化剂纳米Ru/C的制备方法，该方法首先通过化学还原金属钌盐，制得表面活性剂保护下的纳米钌金属胶体，然后用载体吸附制得的胶体溶液，经过滤，洗涤，获得高度分散的负载型纳米钌金属催化剂。

The adsorption behaviour of chemically different superplasticizers, such as melamine formaldehyde sulphite polycondensate,β-naphthalene sulfonate formaldehyde polycondensate and polycarboxylate, on early hydrating cement phases was studied. For this purpose, pure ettringite AF(subscript t, monosulfate AF(subscript m and syngenite were prepared. The adsorbed amount and zeta potential of early hydration products were measured.

制备了钙矾石AF(下标 t、单硫型硫铝酸钙AF(下标 m和钾长石类单矿物，并研究了三聚氰胺磺酸盐甲醛缩聚物、β-萘磺酸盐甲醛缩合物及聚发酸盐等几种化学成分不同的超塑化剂在其早期水化颗粒表面上的吸附行为。

Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, ChinaAbstract: Desorbing bacterium from suspended particle surfaces by adding some different chemicals, such as Zwittergent3-12,EGTA and tryptone etc., and ultrasonic surging, comparing the difference of HPC value between before and after desorption, and then analyzing the size and number of suspended particles, it can be concluded that the effect of suspended particles in drinking water on HPC determination is significant.

本试验采用添加有助于解吸的化学试剂结合不同超声时间、超声温度下的超声波振荡对吸附在颗粒物上的细菌进行解吸，对比解吸前后HPC测定结果的差异，再对颗粒物数量、粒径进行分析，阐述颗粒物对HPC测定结果的影响。

Mesoporous zincum sulfide is synthesized by gentle wet chemosynthesis method, with DDA as templates and Zinc acetate and TAA as precursors. The effect to the synthesis of the ratio of reactive components, the volume of pH, reactive time and reactive temperature has been dicussed systematically, and structures of the as-synthesized samples have been characterized by X-ray diffraction, N2 adsorption-desorption, scanning electron microscopy, Fourier transform-infrared spectra, UV-vis diffuse reflectance spectroscopy, transmission electron microscopy.

以十二胺为模板，醋酸锌及硫代乙酰胺为前驱体，温和湿化学法合成了硫化锌无序介孔结构，系统研究了反应物配比、pH值、反应温度、反应时间对材料合成的影响，运用X射线衍射、N2吸附-脱附、扫描电镜、红外光谱、紫外-可见吸收光谱、透射电镜等分析手段对介孔材料的结构进行了详细的表征。

The effects of soil acidification on the release and leaching of the base ions Al and Si are discussed as well. The effects on existence and behavior of micrometallic elements and rare-earth elements under soil acidification conditions by affecting the balance of deposition-dissolution, adsorption-desorption, chelation-dissoceation, oxid...

考察了酸化条件下土壤中盐基离子和铝、硅的释放淋失及硅对铝毒的缓解作用；论述了酸沉降通过影响土壤中微量金属及稀土离子沉淀-溶解、吸附-解吸、络合-解离、氧化-还原平衡进而影响其存在形态和化学行为；同时关注了酸沉降对C、N、S、P循环转化直接和间接的影响。

The cholesterol absorption, and accelerates its excretion, may play against on cerebrovascular disease's role, adsorbs in food chemistry carcinogen and accelerates its excretion.

胆固醇的吸收，并加速其排泄，可起到防上脑血管疾病的作用，吸附食物中的化学致癌物质并加速其排泄。

Furthermore, the removal efficiency of chemical oxygen demand using fifteen kinds of bamboo charcoals adsorption were also examined.

并进一步探讨以15种竹炭吸附有机物质降低化学需氧量的处理效果。

The physical ways are blending, surface adsorping or coating. The chemical ways are copolymerizing, crosslinking and surface modifying, all of which endow bioactivity on PLA by changing the polymeric macromolecule structure or surface structure.

物理法主要通过共混、表面吸附或涂层等实现对聚乳酸的生物活化；化学法包括共聚、交联、表面修饰等，通过改变聚合物大分子或表面结构赋予材料生物活性。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。