光度测定

The low concentration of chlorine dioxide in water was determined by spectrophotometry according to the characteristic of decoloration of thymol blue by using chlorine dioxide as oxidant in this paper.

根据二氧化氯可氧化百里香酚兰使其褪色的特性，可用示差分光光度法测定水中低浓度二氧化氯的含量。

Using thymol -sodium hypobromite as chromogenic reagent,and extracting the colour formed with butanol,a spectrophotometric method for the determination of arginine in fermentation broth was studied.

以百里酚的次溴酸钠溶液为显色剂，用正丁醇萃取显色产物，以分光光度计比色测定有机相的吸光度值。

Methods After extracting the samples, the reaction between thymol and nitrate produced nitrothymol in the presence of sulphuric acid; then nitrothymol was made to react with sodium hydroxide; determination was made on the concentration of nitrate by spectrophotometry at 412 nm.

样品经提取，其中的硝酸盐在硫酸酸性条件下，与麝香草酚生成硝基化合物，再与氢氧化钠作用，生成黄色化合物，在波长412nm处用分光光度法测定食品中硝酸盐含量。

This paper deals with the best experimebtal condition of the determinationof the hardness of water by spectrophotometry with Methyl Thymol Blue Complexon as chlorophosphosphonsazo, and the concrete formula of Lambert-Beer's Law inthe mixed system of Ca-MTB is calculated.

研究了以甲基百里香酚兰络合剂为显色剂，用分光光度法测定水硬度的最佳试验条件，导出了朗伯─比尔定律在Ca—MTB与Mg—MTB二元混合体系中的具体形式。

In this article the catalytic spectrophotometric back titrimetry for determining trace manganese was studied,best experimental conditions were selected and experimental method was established.

本文研究了催化光度返滴定法测定微量锰的原理，找到最佳实验条件，确立了实验方法。

Methods Cassia Seed was soaked in chromium trichloride aqueous solution of different concentration （from 0 to 3600 mg/L） at 37℃ for 12 hours.

方法用不同浓度的三氯化铬水溶液，37℃浸泡决明子过夜，收获浸泡后的决明子，作为0h时间点的样品，然后分别收获24、48、72、96h的决明子芽，用石墨炉原子吸收分光光度法测定铬含量。

The magnitude of the decrease of absorbance at 410 nm is a measure of trypsin inhibitor activity.

基础于此原理建立了测定胰蛋白酶抑制剂活性的紫外分光光度法。

Quantitative analysis of protein adsorption: The PS suspension containing lysozyme was subjected to ultracentrifuge (15 000 r/min) to collect clear aqueous solution. The lysozyme concentration in the clear solution was measured by spectrophotometry at 280 nm. The amount of protein adsorbed on PS surface was calculated based on the decrease in the protein concentration in the supernatant solution.

蛋白吸附定量分析：采用高速离心(15 000 r/min)法从含溶菌酶蛋白的聚苯乙烯悬浮液中分离出上清液，用紫外(280 nm)分光光度法测定经聚苯乙烯微球表面吸附后，液相蛋白质量浓度的下降值，由此推算蛋白在聚苯乙烯表面的吸附量。

Heated in water bath,uranyl ion and nitrate radical adsorbed on resin are replaced into solution by sodium bisulfate,then are determined by titanous method and spectrophotometry,respectively.

在水浴加热条件下，用硫酸氢根将吸附在树脂上的铀酰离子和硝酸根离子置换到液相中，之后分别采用亚钛法、分光光度法进行测定。

The DS of dye staff determined by visible spectrum method is about 1: 10.4

通过分光光度法测定了K-2BP型高分子染料的接枝度为1：10.4。

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。