硝酸

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 sample was dissolved by hydrofluoric acid and hydrogen nitrate, then the tantalite and hydrofluoric acid formed TaF6- in the media of tartaric acid－hydrofluoric acid.

试样以氢氟酸、硝酸溶解后，在酒石酸－氢氟酸介质中，钽酸与氢氟酸形成阴离子TaF6-，与结晶紫生成蓝紫色的络合物，用苯萃取出来采用光度法测定钽量，测定结果均在国标允许误差范围内。

It can be dissolved in nitric acid-containing amino potassium and thallium (KNH2) ammonia solution.

但可溶于含硝酸铊和氨基钾(KNH2)的氨溶液中。

Sodium nitrite was strongly adsorbed by the dreg and DF from the white trumpet lily and tiger lily.

麝香百合渣及其膳食纤维和卷丹膳食纤维吸附亚硝酸钠实验结果表明：pH2时，这些样品都对亚硝酸根离子有较强的吸附作用，吸附率分别为73.8％、88.5％、80.2％。

Amount of luscious group of acidity of surface of the CF after using Boehm titrate method to determine to be handled through nitric acid.

采用Boehm滴定方法测定了经过硝酸处理后CF表面酸性官能团数量。

In this study, column experiments, including measurements of corrosion potential, were conducted to determine the effects of nitrate on trichloroethylene degradation by granular iron.

为研究硝酸根对颗粒状铁降解三氯乙烯的影响，进行了柱实验和相应的反应铁腐蚀电位测定。

The different factors'n (V / n molar ratio, precipitation pH and calcination temperature effects on the characterization of FeVO4 were discussed and the optimum preparation conditions of triclinic FeVO4 was concluded.

以硝酸铁和偏钒酸铵为原料，在不同n/n摩尔比，不同pH值和不同温度条件下制备了系列样品，优化了三斜型FeVO4的工艺制备条件。

Triphenyl phosphite provided prominent stabilization only when used in combination with other stabilizers. Good results have been obtained for both polyether-urethane and nitrate esters when using 2,6-di-t-butyl-4-methyl-phenol as stabilizer.

亚磷酸三苯酯单独使用时效果较差，但与其它种类的稳定剂混合使用能得到较好的效果。2，6-二叔丁基-4-甲基酚对硝酸酯和聚氨酯粘结剂均具有良好的稳定作用。

Methods:Forty patients suffering from ulcerous colonitis and 40 normal people were tested by nitrate reductase methods and bistin streptavidin.

采用硝酸还原酶法和生物素链亲和素ELISA法测定40例溃疡性结肠炎患者和40例正常人血清NO和TNFα。

The equivalent circuit for a carbon electrode with inductance and constant phase element was released with a low oxidation state of oxide uranium in the interface.

碳钢腐蚀研究结果揭示采用高纯铁与低酸度硝酸铀酰反应生成氧化铀膜是制备氧化铀膜的一种可行的新技术途径。

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。