查询词典 nitric acid

Nanoporous gold with different pore sizes was prepared by controlling the etching time of Au/Ag alloy with concentrated nitric acid and annealing. Scanning electron microscopy and a nitrogen adsorption technique were used to characterize the NPG.

以Au/Ag合金为原料，通过控制浓硝酸的腐蚀时间再辅以退火处理得到了不同孔径的纳米多孔金，利用扫描电镜和N2气体吸附仪对孔性质进行了表征。

For the inactivated immobilized laccase, its carrier NPG could be recycled by simply immersing it into concentrated nitric acid.

此外， 失活的固定化酶经浓硝酸处理后， NPG载体可重复利用。

PETN is a typical nitric acid ester of high explosive with good explosion property. It is chosen as the base of polymer bonded explosive.

PETN（季戊四醇四硝酸酯，又名太安）是爆炸性能优良的硝酸酯类高能炸药的典型，该研究将其选作高聚物粘结炸药中的墓炸药。

A new cleaner technology for making chromium trioxide and potassium nitrate simultaneously by using nitric acid to decompose potassium dichromate has been brought forward.

提出了硝酸分解重铬酸钾法联产铬酸酐与硝酸钾的清洁工艺，并优选出过程中主要环节的合理操作条件。

SO2 remove capacity of activated carbon modified by potassium iodide, copper sulphate and nitric acid increased by 116%, 25%-and 16.7% over that of activated carbon unmodified.

此外，烟气中的O_2能增强SO_2在活性炭上的吸附，烟气中的H_2O也显著增强SO_2在活性炭上的吸附，SO_2吸附量的增加来源于SO_2的化学吸附量。

Insoluble in water. Soluble in ammonia, sodium hydroxide solution, dilute nitric acid, sodium thiosulfate solution.

水中难溶。溶于氨水、氢氧化钠溶液，稀硝酸，硫代硫酸钠溶液。

Mn can also be determined by this method after being reduced to Mn with saturated sodium sulphite in nitric acid .

锰的化合物I叮引起慢性中毒，W此作为嘎金属离子的Mn、Mn在水一}J的含量不宜过高。

The sediment of sulfide can be separated from the solution by filtration and syphon. After the sediment is dissolved by diluted nitric acid, Ni 2+ and Co 2+ in solution can be determined by the flame atomic absorption spectrometry method.

将沉淀过滤，或者加入明矾以加速硫化物的沉降、凝结，再用虹吸法吸去上层清液的方法将沉淀分离，用热稀硝酸将沉淀溶解后直接用火焰原子吸收法测定镍、钴的含量。

The effect of reagents, reaction temperature, dinitrogen tetroxide and nitric acid on the yield and purity of 1,2-propanediol dinitrate were also investigated.

结果表明，N_2O_5和环氧丙烷硝化的主产物是1，2-丙二醇二硝酸酯，副产物是1，2-丙二醇单硝酸酯。

Thus this method could be applied to monitor the process of producing dinitrogen pentoxide by electrochemical oxidation of dinitrogen tetroxide in nitric acid. The results from the two-step titration method of redox titration combined with acidity titration were well consistent with that from the method of redox titration combined with NMR.

氧化还原和酸度两步滴定与氧化还原滴定结合核磁共振光谱法的分析结果表明，两种方法的分析结果吻合良好，精确度良好，两种方法都可用于N_2O_4-N_2O_5-HNO_3体系各组分的全浓度分析。

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。