光度测定

The experimental procedure were predigested under the condition that did not effect the experimental results by using alkal potassium persulphate oxidation -ultraviolet spectrophotometry to determine the total nitrogen in water sample with first water instead of redistillation non-ammonia water.

经实验证明，用碱性过硫酸钾氧化-紫外分光光度法测定水样中的总N，以一次蒸馏水代替重蒸馏无氨水，既减少了实验操作程序，又不影响测定结果，同时本文确定了最佳实验条件，并对标准样品进行分析，结果理想。

Photographic sensitometry, determination of optical density; geometric conditions for reflection density

照相胶片感光度的测定。光密度的测定。反射测量的几何条件

Activity of calcium and sodium pump, parameters of erythrocyte injury, level of calcium in erythrocyte and platelet count and function were obtained during the study.

采用原子吸收分光光度法测定红细胞钙，并同步测定钙泵、钠泵活性，以及红细胞损伤和血小板功能、数量的有关指标。

The suitable detection wavelength was selected through qualitative determination of wave spectrum. With 95% ethanol as the reference solution, the standard curve was drawed with a series of different concn. of standard solution of chlorogenic acid, and the Absorbance of extracting solution was determined and the chlorogenic acid content in filtrate was calculated.

波谱定性检验选择适宜的测定波长，以95%乙醇为参比溶液，用配制好的一系列不同浓度的绿原酸标准溶液绘制标准曲线，测定提取液的吸光度，计算滤液中绿原酸的含量。

In this paper, a spectrophotometry for determination of manganese in high resistance aluminum manganese alloy is reported.

介绍了一种用分光光度法测定铝锰合金中锰含量的测定方法。

This study systemically introduced the methods and technical conditions of determining stibium content of potassium pyroantimonate by using flame atomic absorption spectrophotometric method.

比较详细地研究用火焰原子吸收分光光度法测定焦锑酸钾中锑含量的技术条件和测定方法。

The sample was dissolved by hydrofluoric acid and hydrogen nitrate, then the tantalite and hydrofluoric acid formed TaF6- in the media of tartaric acid－hydrofluoric acid.

试样以氢氟酸、硝酸溶解后，在酒石酸－氢氟酸介质中，钽酸与氢氟酸形成阴离子TaF6-，与结晶紫生成蓝紫色的络合物，用苯萃取出来采用光度法测定钽量，测定结果均在国标允许误差范围内。

Methods:the dispersible tablets was prepared by taking lose subsfrits hydroxypropyl cellulose and hydroxypropymethyl cellulose as excipient.the phenobarbital content in tablets was determined by uv spectrophotometry at 240 nm.results:the uniformity test of dispersion showed that the tablets could smoothly disperse and pass through a no.2 sieve within 1 min.

以低取代羟丙基纤维素、羟丙甲纤维素等为辅料研制该分散片，紫外分光光度法测定该片中苯巴比妥的含量，测定波长为240 nm。结果：分散均匀性试验表明该分散片在1 min内均匀分散并通过2号筛。

Content of trypsin inhibitors in extracts of cyanobacterium from Taihu lake was determined by UV spectrophotometry in this paper.

采用紫外分光光度法对太湖蓝藻提取液中的胰蛋白酶抑制剂进行了含量测定，测定的线性范围在 4～ 4 0 μg/mL 。

RESULTS:The 50%ethanolic extracts of 20 Chinese crude drugs were examined for inhibitory activity on tyrosinase.

应用多巴色素法测定对酪氨酸酶的抑制活性，底物为L-酪氨酸，在490 nm处测定吸光度。

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。