光度

In this paper,the authors compared extraction spectrophotometric method with gravimetric method in the determination of naphthenic acid in oil refining sewage,and found that the former method is better than the latter both in precision and operation.

讨论了萃取分光光度法测定炼油污水中环烷酸含量的测定条件和干扰因素并与重量法进行了比较，萃取分光光度法的精确度比重量法高而操作比重量法简单。

KEY WORDS］ ofloxacin; dexamethson sodium phos phate; ultraviolet spectrophotometry; double-wavelength spectrophotometry

关键词］氧氟沙星；地塞米松磷酸钠；紫外分光光度法；双波长分光光度法

If the base was added again to above solution until pH≥13, the resinoid substance was separated from it.

以分光光度法，于740 nm波长下测定含0.98％正丁醇的0.5％PVA与铜盐组成的(pH=10)不同浓度(5～50 mg CuCl_2·2H_2O/100 ml)的水溶液吸光度，并对CuCl_2·2H_2O摩尔浓度作图，它遵守朗伯—比耳定律。

General experiment situation on routine photometry and fluorophotometry of samarium for 10a recently is reviewed.

根据查阅到的文献，综述了近十多年来钐的常规光度法和荧光光度法研究进展。

General experiment situation on routine photometry and fluoro photometry of samarium for 10a recently is reviewed.

根据查阅到的文献，综述了近十多年来钐的常规光度法和荧光光度法研究进展。

Optical Rotation Optical rotation is used for the measurement of stereochemical purity.

旋光度 旋光度被用于测定立体化学纯度。

Results 81.74％ of the SCL power(including the equavalent optical power of toric SCL) differences were equal or less than 0.50D,85.9％ of the toric SCL axis differences were equal or less than 10°.

结果根据验光结果换算所得SCL处方与戴片验光相比光度(包括散光片的等量球镜光度)差别≤0.50D的占81.74％，散光片旋转≤10°的占85.90％。

The absorbance at 630nm is the index of transmittancy of pectin solution. The yield of pectin can be converted by absorbance of pectin solution by the method of carbazole colorimetric at 530nm.

以630nm吸光度作为果胶溶液色度的指标；采用咔唑硫酸比色法，在530nm时测定果胶液的吸光度计算溶液中果胶得率。

Methods Conjugated with protein precipitation with trichloroacetic acid, BCA method was used.

使用三氯乙酸沉淀蛋白质后，运用BCA法，在570 nm波长处，分别测定标准蛋白质应用液与样品稀释液的吸光度值，基于测定液中蛋白质含量与其吸光度值呈正比关系，计算出样品中蛋白质的含量。

Where t is a time period less than or equal to the present time tSun, L is the luminosity at time t, and LSun is the current solar luminosity.

其中t是小于或等于目前太阳的时间，L是t时刻的光度，LSun是太阳当前的光度。

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。