螯合作用

由于丝蛋白含有羧基，它可以和钙离子发生强烈的螯合作用，因此丝蛋白能够在一定程度上影响无机物的矿化。

To some extent , carboxyl groups in SF molecule can influence the deposition of inorganics because there are strong chelation interactions between Ca2 + and carboxyl groups .

随着研究的深入，大量重金属胁迫相关的基因被报道，这些基因主要是一些编码质膜转运蛋白的序列、编码螯合作用蛋白的序列等。

With the development of study , a host of genes related to cadmium stress have been reported . These genes were mainly involved in coding plasmalemma transporter and chelation protein .

然后剩余的FZ和Cr（III）发生螯合作用，最终达到除铬的目的。

And then , the residual FZ chelated Cr ( III ), achieving the removal of chromium .

为了解释这些现象，引入一个新的、名为阳离子螯合作用机理（CCM）的建议。

To account for the observations , a new proposal termed the cation chelation mechanism ( CCM ) is advanced .

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 .

EVG与双金属离子的螯合作用及对loop区的稳定作用更强，计算所得其与IN结合自由能更低，这些都证明EVG对IN链转移过程的抑制活性更高。

Stronger chelation with metal ions , stabilization on flexible loop and free-energy calculations proved that EVG had higher inhibitory activity on strand transfer reaction of IN .

用TTA萃取分离铀、锆时，TTA对锆的螯合作用很强，硝酸和盐酸的浓酸溶液并不能破坏它们之间的整合，即对锆的反萃取非常困难。

When TTA is used to extract zirconium in uranium , the combination of zirconium and TTA is very strong , the concentrated acid of nitric acid and hydrochloric acid can not destroy their combination .

乙酰乙酸乙酯（EAcAc）能够与Al2O3胶体颗粒表面的-Al-OH基团发生螯合作用从而降低Al2O3胶体颗粒的反应活性，并显著缩小固液相之间的界面差异，使体系的Gibbs焓变下降。

It was indicted that ethylacetoacetate ( EAcAc ) can chelated with - Al-OH groups on the surface of the colloidal particles , depressing the activity of the colloidal particles , reducing the interphase distinction between the solid and liquid phase remarkably , lowering the change of Gibbs enthalpy .

含氮双齿膦配体（Ph2PCH2）2NCH2CH2OCH2CH2NHCH2CH2PO3Na2（以A表示）在1-十二烯的氢甲酰化反应中的实验结果表明双膦配体的螯合作用降低了催化活性和有利于直链醛的生成。

The lower catalytic activities and the more linear aldehydes in the presence of diphosphine with N-atom (( Ph2PCH2 ) 2NCH2CH2OCH2CH2NHCH2CH2PO3Na2 , named A ) can be attributed to the stabilization of rhodium complex by the chelation of diphosphine ligand in 1-dodecene hydroformylation reaction .

高分子壳聚糖对微量金属离子的螯合作用研究

Chelation of Natural Macromolecule Chitosan with Metal Ions at Trace Levels

菌根分泌物的调节与螯合作用；

Exudation of chelating substances and adjustment of fungus slime ;

水溶性甲壳胺制备及其对铅离子的螯合作用

Preparation of water soluble chitosan and its chelation to lead

氯碘羟喹对小鼠海马苔藓纤维内游离锌离子螯合作用的研究

Chelating effect of clioquinol on zinc ions in hippocampal mossy fibers of mice

植酸对生态环境有正负两方面的效应，皆是其螯合作用和抗氧化作用的结果。

These two effects are the results of its function of chelation and antioxidant .

通过金属离子与荧光基团的螯合作用，来增强荧光信号实现对铁离子的检测非常具有挑战性。

Fluorescence enhancement through chelation of Fe3 + with any fluorophore is a challenging task .

有机质通过吸附作用和螯合作用减少有效态重金属离子含量。

Organic matter reduces effective content of ion of heavy metals through adsorption and chelation .

具有螯合作用特征或与之相关。

Relating to or characterized by chelation .

缓凝剂对对静胶凝强度过渡时间也存在一定负面影响，其中以羟基羧酸类强螯合作用高温缓凝剂影响最显著。

The hydroxycarboxylic acid high temperature retarder has more significant negative impact on SGS transition time .

提出了一种基于金属离子螯合作用的压电免疫传感器新型固定化方法。

A new antibody immobilization approach has been proposed for the piezoelectric immunosensors through metal ion chelation .

耐铝毒机制主要包括：（1）有机酸的螯合作用；（2）铝诱导蛋白机制。

The mechanisms of aluminum tolerance include the efflux of organic acid and the induction of AI-proteins .

研究结果表明，柠檬酸的分散、除杂及螯合作用有助于金的氰化浸出。

It is found that the dispersing , impurity removal and chelating effect of citric acid help gold cyanidation .

超积累型植物的内部耐受机制主要体现在：有机酸可与金属元素发生螯合作用，将离子态的金属转变成低毒或无毒的螯合态形式，从而降低细胞内金属离子的毒害效应。

Reducing the toxicity of metal ions in cytosol through chelation with organic acids is internally main mechanisms of plant tolerance to metals .

本文论述以壳聚糖为原料制备壳聚糖铬络合物的方法及该种鞣剂的鞣制效果。壳聚糖为天然高分子化合物，对金属离子有很强的螯合作用。

The preparation of the chitin chrome complex tanning agent with chitin , and the tanning effects have been discussed in this paper .

该家族为一类具有钙离子螯合作用的磷脂蛋白，它们参与了生物体的多种生理和病理过程。

The family for a class of calcium phosphatide-binding protein , they are involved in a variety of organism physiological and pathological process .

低分子有机酸普遍存在于自然环境中，其与重金属阳离子的螯合作用是环境中重金属迁移转化的重要影响因素。

Low molecular organic acids ( LMOAs ) are commonly present and become an important factor in affecting transformation and transfer of heavy metals in environment .

对壳聚糖衍生物性能检测证实对钙离子有螯合作用，可以降低了血液中Ca2+的含量，导致凝血时间延长。

Testing Performance that Chitosan derivatives have the bility to chelation calcium , it can reduce Ca2 + levels of the blood , prolong the coagulation time .

此外，铁载体在病原微生物的控制方面也扮演着重要的角色，由于铁的螯合作用可以抑制病原菌对铁的利用，从而抑制病原菌的生长和代谢活性。

Moreover , siderophores are known to play a role in the biological control of pathogenic microorganisms by chelating iron , thereby inhibiting their growth or metabolic activity .

基于黄酮化合物与金属离子的螯合作用，首次获得了Ca2+螯合纯化花生壳总黄酮新工艺。

Based on the chelation between flavonoids and metal ions , a new process for purifying flavonoids from peanut shell using Ca2 + was developed for the first time .

已有研究表明：解毒酶活性升高、靶标不敏感性以及蛋白质的螯合作用与二化螟抗药性形成的关系密切。

The studies revealed that the resistance formation of rice stem borer was closely involved with the increase of detoxifying enzyme activity , target enzyme insensitivity and protein binding .

综述指出，土壤中农药残留与有机质存在以下几种作用机理：共价键结合、离子键结合、电荷转移复合体、配位体交换、疏水性结合、螯合作用以及氢键和范德华力；

The mechanisms of interaction between organic matter and pesticide residues as follows : covalent bonding , ionic bonding , charge transfer complexes , ligand exchange , sequestration , hydrophobic sorption , hydrogen bonding and Van der waals forces .