查询词典 spectrophotometry

The levels of monoamine neurotransmitters were determined with spectrofluorophotometer and the content of flavonoids was determined with ultraviolet spectrophotometry.

结果：罗布麻叶乙醇提物对小鼠的不动时间没有显著的影响，而其他4个部位均可不同程度的降低小鼠的不动时间，其中正丁醇部位和水相部位的作用最强。

The content of aluminum in water was determined by the flow injection spectrophotometry using morin as chromogenic reagent.

以桑色素作显色剂，采用流动注射分光光度法测定水中铝的含量。

Air-segmented ; flow injection ; natural waters ; catalytically kinetic spectrophotometry ; vanadium

空气整段间隔；流动注射；催化动力学光度法；天然水；钒

The capability of scavenging sodium nitrite and disconnecting nitrosamine synthesis with hawthorn extracts by microwave method were determined by spectrophotometry under simulated human gastric juice,and was compared with vitamin C.

通过微波法提取山楂的活性成分，在模拟人体胃液条件下，采用分光光度法测定了不同浓度的山楂提取液对亚硝酸钠的清除能力和对亚硝胺合成的阻断能力，并与Vc进行了比较。

The recent progresses in the study on the fluorescence of rare earth complexes and application for the determination of the rare earth elements and organic compounds, as fluorescent probes for bioactive materials analysis and as detection means in separation technology were reviewed in detail. In chapter two, the absorption spectra of the 4f electron transitions of the complexes of the neodymium, praseodymium, holmium and erbium with fleroxacin in the presence of CPC have been studies by normal and derivative spectrophotometry.

本文以稀土元素配位化学为基础，以导数吸收光谱技术和荧光光谱技术为研究手段，利用新一代喹诺酮类抗菌药物，抗凝血类杀鼠药物的化学结构特点和大环化合物冠醚与金属离子突出的配位能力，以分析应用为目标，系统研究了这些化合物同稀土元素形成的配合物的光吸收和荧光特性，通过对体系实验条件的优化，使体系的稳定性、选择性和灵敏度得到显著改善。

In this paper, the characteristics of Polyphenol Oxidase from sweet potato and its control methods were studied by spectrophotometry.

应用分光光度法，研究了甘薯中多酚氧化酶的特性及褐变的控制方法。

Objective: A simple and adequate analysis method is described for the determination of papaverine hydrochloride in blood using the conventional spectrophotometry.

目的：建立紫外分光光度法测定血液中盐酸罂粟碱含量的方法。

The method of using formaldehyde buffer solution a b sorption-hydrochloric pararosaniline spectrophotometry to determine sulfur diox ide in air has higher sensitivity and good selectivity,and prevents from adoptin g mercurial absorbent.But the conditions in lab are not well controlled,the v alue of reagent blank and standard curvilinear slope can't accord with the one s tipulated in"Methods for Air and Waste Gas Monitoring and Analysis".Some opra tional techniques for SO2 determination in lab are introduced for reference.

文摘：以甲醛缓冲溶液吸收-盐酸副玫瑰苯胺分光光度法测定空气中的二氧化硫，方法灵敏度高，选择性好，避免了使用含汞的吸收液，但如果实验条件控制不好，试剂空白值及标准曲线的斜率就会不符合《空气和废气监测分析方法》中规定的值，本文着重从操作技巧方面对二气化硫测定的实验室质量控制进行分析，仅供参考。

On the basis of catalytic action of iridium on the oxidation reaction of xylene cyanol FF by the potassium periodate in the medium of 0.02mol/L H2SO4 and heating at 95℃, a new catalytic kinetic spectrophotometry for the determination of iridium is established.

在0.02mol/L硫酸介质中及95℃的加热条件下，对高碘酸钾氧化二甲苯蓝FF的褪色反应具有显著催化作用，据此建立了催化动力学光度法测定痕量依的新方法。

Thin-layer chromatography ; ultraviolet spectrophotometry ; aspirin ; phenacetin ; caffeine

薄层层析法；紫外分光光度法；阿斯匹林；非那西丁；咖啡因

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。