分光光度法

A new method for simultaneous determination of multicomponent with spectrum transform single wavelength spectropotometry is presented.

提出了一种新的单波长法同时测定多组分的光谱变换分光光度法，并以苯甲酸和苯甲醛混合组分为例论证了该方法的可行性。

The hydroxyl free radical scavenging rate was determined by phenanthroline spectrophotometry, and the antilipoperoxidant was determined by colorimetry.

采用邻二氮菲分光光度法测定经自由基的清除率，比色法测定其对脂质过氧化的抑制作用。

Methods Spectrophotometry was used to study the activity of PLAP in the presence and absence of L Leu. PLAP relative activity was calculated according to the absorbance variation.

方法应用分光光度法分别测定有L－Leu和无L－Leu存在下的酶活力，根据其活力变化求出酶的相对活力；用双倒数作图法，确定L－Leu对PLAP的抑制类型并求出其抑制常数；同时也观察了pH对抑制作用的影响。

Orthogonal test was adopted to optimize extraction process of alkaloids from plumula nelumbinis.

以紫外分光光度法测定生物碱的含量，采用正交实验法对莲子心的提取工艺进行优选。

Based on the shortcomings of the COD determination method revised in National Standard, some improvement measures of the standard method, including improvement of slaking phrases, research of substitution catalysts and elimination of chlorine ion disturbance, are compared and discussed. Afterwards, some common substitution COD determination methods, such as correlation coefficient analysis method, electrochemistry analysis method, spectrophotometric analysis method and flow inject analysis method, are introduced.

在论述了国标中COD标准方法不足之处的基础上，本文就标准方法的众多改进措施分类进行了比较与探讨，包括消解方法的改进、替代催化剂的研究以及氯离子干扰的消除，然后介绍了相关系数法、电化学法、分光光度法和流动注射法等COD测定替代技术。

Based on this,first part of this work has established spectrophotometer and laser induced fluorescence spectrographic methods based on the liquid-core waveguide,and made it successfully apply to detecting iron and the cupric ion concentration.

基于此，本工作第一部分建立了基于液芯光纤的分光光度法和激光诱导荧光光谱法，并成功地应用于1，10邻二氮菲对铁的检测和催化荧光动力学方法对铜离子浓度的测定。

METHOD:Using TLC scanning and spectrophotography to determinate the content of berberine hydrochloride.

采用薄层扫描法和分光光度法测定盐酸小檗碱的含量。

Methods: By phenol-vitriolic coloring, determining its content by spectrophotography and analyzing its composition by PC method.

经苯酚－硫酸显色，用分光光度法测定多糖含量；用Pc法检识多糖成分。

To determine Chromium in drinking water with flow injection analysis method and spectrophotography respectively and find out the statistical significance between the two methods.

目的 运用流动注射分析法及二苯碳酰二肼分光光度法对生活饮用水中六价铬进行测定，比较它们结果差异是否存在有统计学意义。

Methods Flow Injection Analysis Method and spectrophotography were applied to detect Chromium content in drinking water; hygienic statistics was used to test the different value means and total means; analysis and comparison were made on the detection result.

对20份水分别用流动注射仪分析法和二苯碳酰二肼分光光度法测定其六价铬的含量。运用卫生统计学，检验配对设计中的差值均数与总体均数，对2种方法的检测结果进行分析比较。

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。