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专性吸附
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  specific adsorption
    of H2PO4- is high enough. However, the competation influence of SO4(2-) on H2PO4- adsorption is very small. This result demonstrats that adsorption power of H2PO4- is great, which belongs to the high-strength specific adsorption type and is not easy to be exchanged by other anions;
    SO4(2-)对H2PO4-吸附量的影响很小.说明土壤对H2PO4-的吸持力较强,为高强度专性吸附,不易于被其它阴离子解吸;
短句来源
    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 that specific adsorption characteristic values ( n ), reflecting proportions of specific adsorption and electrostatic adsorption, showed a trend of NO - 3> Cl - > SO 2- 4> oxalic acid> citric acid.
    专性吸附特征值 (n值 )反映了吸附过程专性吸附与电性吸附比例的大小 ,其值大小表现为 :NO- 3>Cl- >SO2 - 4>草酸根 >柠檬酸根的趋势
短句来源
    SPECIFIC ADSORPTION OF HEAVY METAL IONS ON LATOSOL AND ITS MINERALS
    砖红壤及其矿物表面对重金属离子的专性吸附研究
短句来源
    3. Iron oxide and pyrite could provide Fe for the formation of Fe-OM complexes, so the specific adsorption of copper in soil was promoted and the contents of available copper were decreased.
    3.氧化铁、硫铁矿为铁—有机质复合体的形成提供了物质基础,能够促进土壤对Cu~(2+)的专性吸附,降低外源铜的有效性。
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  “专性吸附”译为未确定词的双语例句
    2. For the tested acid soils, available Mn was divided into four chemical fractions, which were readily soluble Mn, weakly absorbed Mn, specifically absorbed Mn and oxide Mn and readily soluble Mn were main fractions of available Mn, and the relative proportion of the two fractions in total available Mn accounted for 86.4% and 7.7% respectively.
    2.对于酸性土壤来说,有效锰分为易溶态锰、弱吸附态锰、专性吸附态锰和氧化锰四种化学形态,其中氧化锰和易溶态锰是其有效锰的主要存在形态,二者分别占有效锰总量的86.4%和7.7%;
短句来源
    The amount of desorption of Cd increased with increasing pH and amount of Cd adsorption. However, the proportion of Cd desorption to adsorption decreased with pH. At pH 3-7, the ratio of desorption to adsorption of Cd in yellow brown earth was 42%~95% with average 75%, which indicated that Cd was mainly nonspecifically adsorbed by yellow brown earth and the availability of Cd adsorbed was high.
    解吸Cd2+的数量随pH升高和吸附Cd2+的数量增加而增加,但解吸Cd2+占吸附Cd2+的比例随pH升高而降低,在pH3 7下,黄棕壤解吸Cd2+的比例为42%~95%,平均为75%,说明黄棕壤Cd2+以非专性吸附为主,吸附Cd2+的有效性高。
短句来源
    The affinity characteristics (K) of four soils in Na+system decreased i n an order: latersol>red latersol>yellow brown earth and dark brown earth. Coexi sting Na+had no significant effect on the adsorption of Cu2+by soils, while Ca2+or Zn2+caused the adsorption of Cu2+decreasing significantly.
    Cu2+的吸附结合能(K)在Na+体系下为砖红壤>赤红壤>黄棕壤>暗棕壤,说明4种土壤对Cu2+吸附的亲和力依次减弱,但Ca2+共存时使土壤对Cu2+的吸附结合能明显增大,说明Ca2+可使土壤对Cu2+专性吸附增强;
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
    while,the desorption rate of Cd was less than 3% in red latersol and was from 1.4% to 19.2% in paddy soil,implying that Cd was specifically adsorbed by red latersol and there was partially non-specific adsorption in paddy soil.
    而镉在赤红壤上解吸率<3%,水稻土上解吸率为1.4%~19.2%,表明镉在赤红壤仍以专性吸附为主,水稻土上还存在部分非专性吸附
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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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An experiment on the characteristics of Co,Cu,Pb and Zn adsorption

本文研究了高度风化的酸性红壤对Co、Cu、Pb、Zn离子的吸附特性。用吸附曲线形状,吸附方程,分配系数,pH_(50)值等讨论了吸附亲和力特征及其影响因素和吸附反应的机理。结果表明,红壤粘粒吸附重金属离子主要由Fe、Al氧化物所控制。金属离子对红壤粘粒的吸附亲和力(以pH_(50)表示)主要决定于离子本身的化学性质,亲和力以Cu≥Pb>zn>Co顺序减少,易水解的离子吸附亲和力较大,亲和力也受土壤组分及其表面性质影响,含Fe、Al氧化物多的粘粒其表面的反应活性也较大,对金属离子的亲和力较强。通过竞争吸附方程对吸附-pH曲线的描述和分配系数等的讨论,揭示出四种离子与红壤粘粒的反应机理并不相同,Cu、Pb离子以专性吸附反应为主,Zn、Co则非专性吸附占一定比例。对专性吸附机理,可以认为从低pH时的配位机理和水解-吸附机理共存逐渐转为高pH时的水解-吸附机理为主是合理的

The

本文对Cu ̄(2+)、Zn ̄(2+)、Co ̄(2+)、Ni ̄(2+)和Cd ̄(2+)在砖红壤、针铁矿、无定形氧化铝和高岭石表面上的专性吸附进行的研究结果表明:pH是影响重金属离子吸附过程的最重要因素,而表面带电性质对吸附过程的影响不大。砖红壤表面的吸附顺序是Cu ̄(2+)>Zn ̄(2+)>Co ̄(2+)>Ni ̄(2+)≥Cd ̄(2+);针铁矿表面的吸附顺序是Cu ̄(2+)>Zn ̄(2+)>Cd ̄(2+)>Ni ̄(2+)>Co ̄(2+);而无定形氧化铝和高岭石表面的吸附顺序是Cu ̄(2+)>Zn ̄(2+)>Ni ̄(2+)>Co ̄(2+)≥Cd ̄(2+)。重金属离子在四种材料上的吸附过程符合三层络合模式:(式中S为表面;M为重金属离子;K_M(int)是本征络合常数;Q_M是表观络合常数;exp为指数函数;e为电子电荷;ψ_0为表面电位;ψ_β为Stern层电位,R为气体常数;T为绝对温度。用吸附数据求得的-LogQ_M与σ_0(表面电荷密度)之间呈极显著直线相关(α=0.01)。模型参数K_M(int)和内层电容θ_1可用来表征表面与M ̄(2+)吸附亲和大的大小。在本文所测试的五种离子中,Cu ̄(2...

本文对Cu ̄(2+)、Zn ̄(2+)、Co ̄(2+)、Ni ̄(2+)和Cd ̄(2+)在砖红壤、针铁矿、无定形氧化铝和高岭石表面上的专性吸附进行的研究结果表明:pH是影响重金属离子吸附过程的最重要因素,而表面带电性质对吸附过程的影响不大。砖红壤表面的吸附顺序是Cu ̄(2+)>Zn ̄(2+)>Co ̄(2+)>Ni ̄(2+)≥Cd ̄(2+);针铁矿表面的吸附顺序是Cu ̄(2+)>Zn ̄(2+)>Cd ̄(2+)>Ni ̄(2+)>Co ̄(2+);而无定形氧化铝和高岭石表面的吸附顺序是Cu ̄(2+)>Zn ̄(2+)>Ni ̄(2+)>Co ̄(2+)≥Cd ̄(2+)。重金属离子在四种材料上的吸附过程符合三层络合模式:(式中S为表面;M为重金属离子;K_M(int)是本征络合常数;Q_M是表观络合常数;exp为指数函数;e为电子电荷;ψ_0为表面电位;ψ_β为Stern层电位,R为气体常数;T为绝对温度。用吸附数据求得的-LogQ_M与σ_0(表面电荷密度)之间呈极显著直线相关(α=0.01)。模型参数K_M(int)和内层电容θ_1可用来表征表面与M ̄(2+)吸附亲和大的大小。在本文所测试的五种离子中,Cu ̄(2+)与表面?

The contents of rare earth elements(REE)in red soil,yellow brown soil and leached chernozem are studied.After extracted sequentially,REE in these soils are fractionated into seven forms,i.e,(Ⅰ)water soluble,(Ⅱ)exchangeable,(Ⅲ)loosely bound to organic mat ter,(Ⅳ)bound to carbonate and specifically absorbed,(Ⅴ)bound to Fe-Mn oxides,(Ⅵ)tightly bound to organic matter and(Ⅶ) residual forms,The contents of REE in every form are determind by NAA(neutron activation analysis).The results show that REE in soils mainly...

The contents of rare earth elements(REE)in red soil,yellow brown soil and leached chernozem are studied.After extracted sequentially,REE in these soils are fractionated into seven forms,i.e,(Ⅰ)water soluble,(Ⅱ)exchangeable,(Ⅲ)loosely bound to organic mat ter,(Ⅳ)bound to carbonate and specifically absorbed,(Ⅴ)bound to Fe-Mn oxides,(Ⅵ)tightly bound to organic matter and(Ⅶ) residual forms,The contents of REE in every form are determind by NAA(neutron activation analysis).The results show that REE in soils mainly exist in residual form and REE in Soluble forms are very limited(<7%).

采用连续提取法,将土壤中稀土元素的赋存状态分为七种形态,即:(Ⅰ)水溶态、(Ⅱ)可交换态、(Ⅲ)松结有机态、(Ⅳ)碳酸盐结合态和专性吸附态、(Ⅴ)铁锰氧化态、(Ⅵ)紧结有机态和(Ⅶ)残渣态。用中子活化分析(NAA)测定了各形态中稀土元素的含量,并探讨了红壤、黄棕壤和淋溶黑钙土等土壤中各稀土元素的赋存状态。研究结果表明,三种类型土壤中,稀土元素均以残渣态为主要赋存状态(>60%),而水溶态中的稀土元素含量极微。

 
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