光度测定

MethodsThe flavonoids were extracted by ethanol from Baise's purslane with ultrasonic wave and ethanol extraction .

方法采用超声波乙醇浸提法从百色马齿苋中提取黄酮类物质，对所提取的黄酮类物质进行验证，并用分光光度法测定含量。

The method is a traditional colorimetry and is direct ratio with the content of Pyrethrin pesticide and absorbency in a concentration area. The best absorbency wavelength is 505nm and it is ideal about the recovery.

本方法采用传统的比色法，在一定浓度范围内拟除虫菊酯类农药的含量与吸光度呈正比关系，最佳测定波长为505nm，样品的回收率比较理想。

Based on the nitrite catalyzed oxidation of pyrocatechol violet by potassium bromate, a new catalytic spectrophotometric method for determination of trace nitrite has been developed.

基于在磷酸溶液中，亚硝酸根对溴酸钾氧化邻苯二酚紫的褪色反应具有催化作用，建立了催化光度法测定微量亚硝酸根的新方法。

A spec-trophotometric method of the determination of trace tin was developed based on the reaction of tin with Pyrocatechol Violet in the presence of Cety Trimethylammonium Bromide in high alloy steel.

通过对干扰离子的影响及其消除方法的研究，提出了适用于高合金钢中的以邻苯二酚紫-溴化十六烷基三甲基胺光度法测定微量锡的分析方法。

It has been observed that pyrocatechol and m-phenylenediamin can sensitively inhibit the discoloration of neutral red oxidation by the H2O2 and in the presence of catalyzer Fe in dilute sulfuric acid solution but the inhibitory effects of two organic compounds can not be added. Based on this research, the advantages of artificial neural network were adopted to handle the experimental data and a new inhibitory kinetic spectrophotometry of simultaneous determination for pyrocatechol and m-phenylenediamin with artificial neural networks was established.

在硫酸性介质中，Fe能够催化H2O2氧化中性红褪色反应，邻苯二酚和间苯二胺都能阻抑该催化氧化褪色反应的速度，研究发现：两者对Fe催化H2O2氧化中性红褪色反应阻抑作用不具有加和性，根据这一现象，用人工神经网络处理非线性体系的优势进行数据处理，从而建立了一种新的测定邻苯二酚和间苯二胺混合物的人工神经网络阻抑动力学光度法。

New absorbance ratio derivative method ; Simultaneous determination ; Phenol ; Resorcin

吸光度比值－导数光谱新方法；同时测定；苯酚；间苯二酚

In the experiment,glass chest was used to simulate indoor roomage environment.The formaldehyde concentration in the simulative room was measured by the method of acetyl acetone with spectrophotometer.

实验以玻璃箱模拟室内空间环境，应用乙酰丙酮分光光度法和邻苯三酚自氧化法测定在不同甲醛含量下芦荟对甲醛的吸收及其体内过氧化物酶活性的变化情况。

Determination of Trace Copper by Catalytic Fluorimetric——System of Cu- Safranin T -H_2O_2

本文依据汞对藏红T-碘化钾反应的催化作用，建立了一种测定微量汞的动力学分光光度法。

A spectrophotometric method to measure the concentration of salicin in the water extract of willow bark was established based on the HCLO4 - Vanilin staining reaction with λmax of 520 nm.

以水为溶剂，50℃下超声提取柳树茎皮中的水杨苷，采用香草醛分光光度法，在吸收波长520nm下，建立水杨苷含量的测定方法。

The paper analyses that flavone's total content measuring of Parthenocissus tricuspidate is extracted by scorbutic extractor and Cohobation method, measured by spectrophotometer.

采用索氏提取法和回流提取法对爬山虎中总黄酮含量进行了提取，并用分光光度法进行了测定。

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。