亚硝酸

The method was based on the inhibition effect of iodine on the nitrite catalyzed oxidation of cresol red by potassium bromate catalyzed by nitrite in dolute sulfuric acid medium.

研究了在稀硫酸介质中，痕量碘离子对亚硝酸根催化溴酸钾氧化甲酚红的阻抑作用，建立了测定痕量碘离子的阻抑动力学光度分析的新方法。

Moreover, the future application prospect and further study trend of aerobic denitrification were proposed.

并对亚硝酸型硝化反硝化的应用前景进行了展望，提出了其今后的研究方向。

Objective To study resonance light scattering spectra of diazotization- coupling reaction and establish a new method for the determination of trace nitrite.

目的 研究重氮化－偶联反应的共振散射光谱并应用于亚硝酸根的测定。

This is ascertained by the similar reponse properties of the electrode based on the complex 4, 4', 4", 4'"tetra-tert-butylphthalocyanine cobalt dichloride prepared by oxidation of TTBPcCo.

利用氧化法制得的二氯化4，4'，4"，4'"-四特丁基酞菁钴呈现出对亚硝酸根相似的电位响应性能，初步证实了电极的响应机理假说。

It was found that the energy barrier of the indirect reaction of DMA with nitrous acid...

这一结论和NDMA的形成速率与亚硝酸的浓度的平方成正比的实验结果相一致。

It was discovered that when ethyl nitrite was introduced to the surface of catalyst, Pd ethoxyl compound was formed and simultaneously the active site Pd was transferred to the surface of catalysts with the change from Pd〓 to Pd〓. Then lined-adsorbed CO inserted into Pd alkoxyl compound to form the carboethoxypalladium complex.

研究结果表明，在CO偶联反应过程中，亚硝酸乙酯在催化剂上吸附，生成钯乙氧基络合物，同时将催化剂表面上的活性中心氧化，由Pd〓→Pd〓，并向催化剂表面上迁移。

The ammonium inhibition kinetics of nitrite oxidation could also be described by the Haldane inhibition equation.

亚硝酸氧化的铵氮抑制过程也可较好地用Haldane抑制动力学来描述。

There six chapters in this dissertation: the overview on the study of probing for reactive oxygen species, spin-labelled fluorophore as probe for free radicals, Fe -EDTA chelate-induced aromatic hydroxylation of terephthalate as a new method for the evaluation of hydroxyl radical-scavenging ability, study of fluorimetric method for the determination of peroxynitrite, study of spiro-formed rhodamine B hydrazide as a novel fluorescent probe in analytical chemistry, the conclusion and prospect of the present research work.

本论文分六章，包括生物活性氧表征的研究进展、自旋标记荧光探针表征自由基的研究、利用Fe-EDTA引发对苯二甲酸芳环羟基化反应评价抗氧化剂清除羟基自由基能力的研究、荧光法表征过氧亚硝酸根的研究、螺环型罗丹明B酰肼化合物作为新型荧光探针的性质及应用的研究、结论与展望。

Be just nitrous acid because of the inner processing meat products has added a saltpetre,amine in meeting and leben forms sub nitramine , is cancerogen.

因为加工肉制品内添加了硝，也就是亚硝酸，会和酸奶中的胺形成亚硝胺，是致癌物。

When the pH decreased to 10.95,8-hydroxyl quinoline lost its corrosion inhibition effect,and methenamine could work with high concentration.

以亚硝酸钙为主导的钢筋阻锈剂已在工程上有较长的应用史，但是由于其毒性，使应用受到了限制。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。