还原电位

Comparing it with the standard electrode potential of nitric acid,the reason of dissolution of HgS in aqua regia was quantitatively revealed,and this is that the high concentration of chloride ions reduces the reduction potential of sulfur in HgS,thus raising the reducing power of HgS rather than that the oxidizing power.

根据热力学平衡原理和设计的可逆电池反应，由 E~0Hg~(2++S/HgS数据，计算了 E~0HgCl_4~(2++S/HgS+4Cl~-数值，将其与 HNO_3的标准电极电位比较，定量地揭示了 HgS 溶于王水的原因在于该溶液中高浓度 Cl~-离子降低了 HgS 中硫的还原电位，从而提高了 HgS 的还原性所致，并非王水的氧化性比 HNO_3的更强。

The results showed that: 1 reinders' redox buffers were used to study the redox properties not only for latent image centers but also for sensitivity centers; 2 The redox potential of Ag2S sensitivity centers was less negative than －220 mV with respect to the saturated calomel electrode in our experiment and the redox potential of latent image centers was between －220 mV and －190 mV; 3 The redox activities of latent image centers were much higher than that of sensitivity centers.

实验结果表明：1Reinders的氧化还原缓冲液的方法，不仅可用于研究潜影中心，也可用于研究敏化中心；2本实验条件下的硫化银敏化中心的氧化还原电位约略负于－220 mV，潜影中心的氧化还原电位值是介于－220 mV与－190 mV之间；3潜影中心的氧化还原活性较敏化中心大得多。

In the detection experiments, the scan rate is set at 0.3 V/s under the analysis of linear sweep voltammetry. On the cyclic voltammetry plot, each pair of clear redox peaks was observed for 4-chlorophenol (4-CP), 2,4-dichlorophenol (2,4-DCP), and penta- chlorophenol. The potentials of the redox pairs were 1.218 and -0.460 V for 4-CP, 1.128 and -0.448 V for 2,4-DCP, and 1.037 and -0.473 V for PCP.

在侦测污染物的实验之中，使用0.3 V/s做为线性扫描伏安法的最佳扫描速度，利用循环伏安法扫描可测得4-氯酚、2，4-二氯酚及五氯酚水溶液中氧化与还原波峰，4-氯酚的氧化与还原电位为1.218与-0.460 V、2，4-二氯酚之氧化与还原电位为1.128与-0.448 V及五氯酚之氧化还原电位为1.037与-

Potassium ferricyanide and dithiothreitol were used to control redox potential from －100 mV to －450 mV in 3 L fermenter.

在3 L发酵罐上利用铁氰化钾和二硫苏糖醇调节发酵体系氧化还原电位值在－100～－450 mV，结果表明－350 mV为菌体生长和产丁二酸的最佳电位，丁二酸生产速率由0.75 g/提高到1.18 g/，产物丁二酸与副产物乙酸的质量浓度比由2.5提高到3.9。

Experimental results show that the different substituted location and different substituted group on benzene cycle would result in the diversity of reduction properties of substituted aryl nitrobenzene. Substituted nitrobenzenes with withdrawing group will be reduced at more positive potential, while those with repelling group will be reduced at more negative potential. In addition, the reduction potential of nitro group of o-nitrobenzene shifts more negative due to the effect of space resistance.

结果表明，芳族硝基化合物在苯环上的取代基位置不同以及在相同位置上取代基的种类不同均可使各芳族硝基化合物的电还原性能发生较大差异：吸电子取代基在电还原过程中电位较正，推电子取代基的电还原电位较负：邻位取代基在反应过程中由于空间位阻效应，苯环上的硝基在电还原时电位往负方向移动。

The UV-vis and redox data indcated that the molecular plane was destroied by meso ethyl.λ〓 hypsochromic 52 nm and W〓 increase. Redox potentials increase, too.

染料的UV-vis吸收光谱和氧化还原电位结果表明中位乙基的引入破坏了染料分子的平面性，使得染料的λ〓蓝移52nm，半峰宽增大；氧化、还原电位均升高。

It was found that introducing electron-donating groups, such as alkyls, weaken the electron-accepting ability of C60 and make its first reduction wave shifted to more negative position.

结果发现，引入推电子基团，如烷基，会使C60得电子能力降低，第一个还原电位有较大的负移；引入具有拉电子性质的基团，如羧酸酯基，则会部分抵消由於C60共扼结构被破坏而引起的电位负移，结果使得电位负移值减少。

The mechanisms for the differences among rice cultivars in Cd uptake and translocation There were significant differences in root oxidating abilities and soil redox potential between two typical rice cultivars, Shan you 63 and Wu yun jing 7, that are greatly different in Cd uptake from soil. The root oxidating abilities and soil Eh were accordant with Cd uptake for the cultivars. The difference between the two cultivars in Fe concentrations of root iron plaque was also significant. The cultivar with higher Fe concentrations in root iron plaque absorbed less Cd from soil.

四、水稻不同品种对镉吸收及分配存在差异的生理机理对土壤中Cd吸收能力差异很大的水稻不同品种间，根系氧化力和土壤氧化还原电位有显著差异，品种的根系氧化力和土壤氧化还原电位与该品种对Cd的吸收能力间有很好的一致性；水稻不同品种间，根表铁氧化膜的含铁量有显著差异，根表铁氧化膜含铁量高的品种，对土壤中Cd的吸收能力低；盆栽水分腾发量高及根系伤流液Cd浓度高的品种，吸收积累Cd的能力强。

Their electrical and photophysical properties are characterized with different numbers of donor and acceptor, and the molecular band gap can be well-tuned by altering the number of donor and acceptor respectively.

藉由电化学实验中得知，不同数目的电子予体和电子受体，会有不一样之氧化电位和还原电位。利用此特性，分别调控分子HOMO及LUMO之能阶位置，有策略性的改变分子之能阶差，调控其电荷转移之放光波长。

The electrolyzed oxidizing water used in the experiment had redox potential of 1148～ 1165 mV, pH value of 2.08～ 2.40 and available chlorine content of 23.37～54.28 mg/L.

试验用高氧化还原电位酸性水的氧化还原电位为1148～1165 mV，pH值为2.08～2.40，含有效氯23.37～54.28 mg/L。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了