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专性吸附
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  specific adsorption
     The contribution, △, of cation specific adsorption to zeta potential of different soils were of the orders: K+ < Zn2+ < Ca2+ < Cu2+ < Mn2+ for laterite, and Ca2+ < K+ < Mn2+< Cu2+ < Zn2+ for yellow brown earth and black soil.
     阳离子专性吸附对ζ电位的贡献△ζ在不同土壤、不同离子之间的顺序如下:砖红壤K+<Zn2+<Ca2+<Cu2+<Mn2+,黄棕壤和黑土Ca2+<K+<Mn2+<Cu2+<Zn2+。
短句来源
     and after addition of pH3.5 acidic solution, there existed the process of H+ consumption, of which the mechanism was related to the specific adsorption of SO42- to release OH- for neutralizing H+ in the solution.
     加入pH3.5酸溶液后,存在H+的消耗过程,其机理与SO42-的专性吸附释放OH-以中和溶液中H+有关.
短句来源
     Ad-sorption included specific adsorption and electrostatic adsorption when ionic strength was low to 1.0 mol kg-1,whereas, adsorption of Cu2+ , Pb2+ on soil colloids was controlled by specific adsorp-tion.
     离子强度大于1.0mol·kg-1以后,土壤胶体对Cu2+和Pb2+的吸附受专性吸附控制.
短句来源
     During 0~300 min, the concentration of effluent Al was about 1~5 μmol/L and effluent pH value was above 4.5 in latosolic red soil and latosol. Buffering reaction to H+could be cation exchange, specific adsorption of to release OH-for neutralizing H+in the solution, and surface protonation of soil minerals.
     赤红壤和砖红壤上在0~300min内流出液铝的浓度范围约为1~5μmol/L,流出液pH值大于4.5,对H+的缓冲作用表现为阳离子交换、SO24-的专性吸附释放OH-和矿物表面的质子化;
短句来源
     The specific adsorption of copper to soil organic matter,Fe/Al oxide is the main factor affecting copper bioavailability in soil.
     铜污染土壤中有机质、Fe/Al氧化物对铜的专性吸附,是影响土壤中铜生物有效性的主要因素。
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  special adsorption
     It can be concluded that there is two adsorption styles of montmorillonite to Cu~(2+): exchangeable adsorption and special adsorption.
     整个研究表明,在 pH ≤ 4. 5、痕量浓度条件下,蒙脱石对 Cu~(2+)的吸附包括两种方式,即交换吸附和专性吸附
短句来源
     CrO~(2-)_4(adsorption) in unmodified soils increases with(the) temperature,and the effect was stronger on unmodified CLLS than on(unmodified) TLLS,indicating increase in temperature promotes CrO~(2-)_4 special adsorption on clay mineral.
     未修饰原土对CrO42-吸附呈现增温效应,粘化层CK土样增温效应高于耕层CK土样,表明增温促进粘粒矿物对CrO42-的专性吸附
短句来源
     it has mainly happened the special adsorption such as coordination ad-sorption and soon,which hashigh adsorption stability,and not easy desorption.
     主要发生了配位吸附等专性吸附,吸附稳定性高,不易解吸。
短句来源
  “专性吸附”译为未确定词的双语例句
     The effect of K+ on NH4-Q/I curve or NH4+ on K-Q/I curve was essentially a comprehensive balance of the decrease in (Ca+Mg)ex,the change in the ratio of NH4+/K+ specifically sorbed on the exchanger and the complementary ion effect.
     K~+对NH_4~-Q/I或NH_4~+对K-Q/I的影响,受(Ca+Mg)_(ex)降低、专性吸附NH_4~+-K~+比改变和陪补离子等综合作用.
短句来源
     THE CHARACTERISTICS OF Cu~( 2)+ AND Pb~( 2+) ELECTROSTATIC AND SPECIFIC ADSORPTIONS OF CONSTANT CHARGE SOIL COLLOIDS
     恒电荷土壤胶体对Cu~(2+)、Pb~(2+)的静电吸附与专性吸附特征
短句来源
     (3)Pb~(2+) and Cu~(2+) adsorption on the surface of the three soils existed in both static and specific patterns. The specific pattern accounted for 56%,67% and 50% respectively,in the case of Pb~(2+).
     (3)石灰性紫色土、中性紫色土和酸性紫色土表面对Pb2+和Cu2+的吸附以静电和专性方式共存,其中对Pb2+的专性吸附比例分别约为56%、67%和50%;
短句来源
     The negative value of Δ G  m in different soil colloids was consistent with the sequence of Cu 2+ ,Pb 2+ intrinsic complex constant and permanent charge density.
     供试土壤胶体对Cu2 +、Pb2 +专性吸附ΔG m 的大小与固有络合ΔG m 接近且大小次序也一致。
短句来源
     Equilibrium method was applied to investigate effect of iom'c strength and surface potential on Cu2+ , Pb2+ adsorption in soil colloids. Results showed that the lower ionic strength was, the higher surface potential was, the larger Cu2+ , Pb2+ adsorbed amount in soil colloids was.
     采用平衡法研究了离子强度、表面电位对恒电荷土壤胶体吸附Cu2+和Pb2+的影响.结果表明,离子强度越小,表面电位越高,土壤胶体对Cu2+和Pb2+的吸附量越大.在离子强度小于1.0mol·kg-1范围内,土壤胶体对Cu2+和Pb2+的吸附包括静电吸附和专性吸附;
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  specific adsorption
The specific adsorption potential of SDS is found to be -(4.6 ± 0.1)?, where ? is the product of Boltzmann's constant and absolute temperature.
      
The specific adsorption potential is independent of the background electrolyte concentration, remains constant within the determination error of the parameters, and substantially contributes to the formation of EDL of micelles.
      
In the absence of TMA, ellipsoidal particles were obtained due to the anisotropic growth caused by the specific adsorption of TEOA onto the crystal planes parallel to the c-axis of a titania particle.
      
This is probably due to the specific adsorption of SO2-3 ions on Ag2S centers.
      
The distribution coefficients and the maximum specific adsorption of this compound on the test sorbents were calculated.
      
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This paper presents the properties of oxide surfaces in soil colloids, including zero point of charge (ZPC), titration curves, amount of hydroxyl(OH) released, and adsorption of NH_4~+ and Cl~- under various pH. The results showed that as compared with the properties of siloxane surface in montmorillonite, the oxide surfaces supplid larger amount of variable charge, the sesquioxide in soils increased the ZPC, but the permanent negative charge and organic matter decreased the ZPC of soits. As clay acids, the...

This paper presents the properties of oxide surfaces in soil colloids, including zero point of charge (ZPC), titration curves, amount of hydroxyl(OH) released, and adsorption of NH_4~+ and Cl~- under various pH. The results showed that as compared with the properties of siloxane surface in montmorillonite, the oxide surfaces supplid larger amount of variable charge, the sesquioxide in soils increased the ZPC, but the permanent negative charge and organic matter decreased the ZPC of soits. As clay acids, the proton on oxide surfaces dissociated gradually, so the titration curves showed no inflexions. The density of hydroxy and hydrous group on oxide surfaces which responded to specific adsorption of ion were higher. So far as the chemical formula is concerned, the oxide surfaces in soils are commonly Si-OH, Al-OH and Fe-OH. They can coexist in one kind of soil. The Si-OH sub-surfaces of oxide with low ZPC usually supply negative variable charge, the Al-OH and Fe-OH subsurfaces with high ZPC supply positive variable charge.

我们以蒙脱石为对照,测定了以水合氧化物型表面为主的试样四个方面的表面性质:电荷零点(ZPC)、滴定曲线、羟基释放量及不同pH条件下对NH_4~+和Cl~-的吸附。结果表明,在pH 4—9范围内,氧化物型表面提供可变正电荷1—8 meq/100g,提供可变负电荷3—15meq/100g;三二氧化物使土壤的ZPC升高,而永久负电荷和有机质使土壤的ZPC降低。作为粘土酸,氧化物表面的酸性较弱,其表面质子逐步解离,使滴定曲线不出现突跃。氧化物表面的羟基和水合基密度很高,增加了土壤对离子的专性吸附能力。土壤中常见的氧化物型表面主要来自Fe,Al氧化物及非品质矿物,就它们的化学式而言,主要有Si—OH、Fe—OH及Al—OH,它们可存在于同一土壤中,在土壤常见的pH范围内,具有低ZPC的Si—OH亚表面提供可变负电荷,具有高ZPC的Fe—OH和Al—OH亚表面提供可变正电荷。

Effect of organic matter, free iron oxide and amorphous Si and Al on the Cd adsorption and desorption of colloids of lime concretion black soil (IBC), yellow brown earth (YBC), red earth (RC) and latosol (LC), which are the typical soils in South and Southeast China, was studied with selective dissolution method. Results showed the decrease of Cd adsorption by colloids of the soils after removal of OM might be due to the decrease of exchangeable adsorption by the soil colloids. Removal of free Fe_2O_3 resulted...

Effect of organic matter, free iron oxide and amorphous Si and Al on the Cd adsorption and desorption of colloids of lime concretion black soil (IBC), yellow brown earth (YBC), red earth (RC) and latosol (LC), which are the typical soils in South and Southeast China, was studied with selective dissolution method. Results showed the decrease of Cd adsorption by colloids of the soils after removal of OM might be due to the decrease of exchangeable adsorption by the soil colloids. Removal of free Fe_2O_3 resulted in significant decrease of Cd adsorption by the colloids of YBC, RC and LC, which indicates the significance of specific adsorption of free iron oxide in these soils. Cd adsorption decreased with increasing of amorphous Al content in soil colloids, which might be due to the high energy exchange sites being occupied by Al ions. The Cd desorption percentage by the soil colloids after different treatments was in the order: that removing amorphous Si, Al>that removing free Fe_2O_3>that removing OM>the original soil colloids, however, the order differed slightly for different soils under different pH.

采用选择溶解法研究了有机质、游离铁、无定型硅、铝等土壤组份对青黑土、黄棕壤、红壤和砖红壤胶体吸附和解吸Cd的影响。结果表明,去除有机质后胶体吸附Cd减少,这可能是由于交换吸附的减少所致;游离铁的去除使得黄棕壤、红壤和砖红壤的吸附量显著减少,显示了在这些土壤中游离氧化铁专性吸附的重要性;随着无定形铝含量的上升,吸附量下降,这是因为铝离子占据了高能量的吸附位。经不同处理后的土壤胶体,其Cd的解吸顺序(解吸%)大致为:去无定型硅、铝者>去游离铁者>去有机质者>原胶体,但在不同土壤和不同pH条件下该顺序略有差别。研究结果为控制和改造土壤Cd污染提供了理论依据。

The present paper deals with the effect of the components of soils on the specific adsotption of copper ion and its characteristics. Latosol, red earth and paddy soil (neutral) were used in this paper. The specific adsorption of Cu~(2+) ion was determined in the presence of 0.5 M NaCl as supporting electrolyte, and the initial pH of solution was 4.00.

供试土壤专性吸附铜的等温线均符合Langmuir方程。红壤吸附量最低,砖红腹与黄泥土最大吸附量相近,但在铜浓度低时砖红壤吸铜量远低于黄泥土,而在高浓度则反之。土壤专性吸附铜是在溶液中Na~+浓度比Cu~(2+)高8.3—100倍条件下,Na~+离子仍不足以与之竞争的那些专性吸附点所吸持的铜。按其解吸条件区分为松结合铜(可为N NH_4Cl解吸)和紧结合铜(仅能为0.1 N HCl解吸)两种。紧结合铜受平衡溶液铜浓度影响很小,所占据的吸附点对Cu~(2+)有较强亲和力。松结合铜则随平衡铜溶液浓度增大而增加,符合Langmuir方程。对于砖红壤和黄泥土,在铜浓度低时紧结合铜>松结合铜;浓度高时则反之。红壤专性吸附铜始终以松结合铜为主。三种土壤比较,紧结合铜是砖红壤>黄泥土>红壤;松结合铜则是黄泥土>砖红壤>红壤。造成这些差别的原因可能与土壤性质、氧化物、有机质和粘土矿物组成等不同有关。用平衡法研究三种土壤专性吸附铜在不同浓度NH_4Cl和HCl溶液中的解吸表明,可进一步区分为三或四种不同的结合状况。红壤对铜吸附容量最小,且最易解吸。

 
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