光度测定

A new catalytic spectrophotometric method for the determinati-on of trace copper is described. This method is based on the oxidation of Phloxine by hydrogen peroxide in ammoniacal medium, catalyzed by copp-er.

本文提出了催化光度法测定痕量铜的新方法，此法是基于萤光桃红在氨性介质中被H_2O_2氧化的反应受到痕量Cu的催化。

By using spectrophotometry method determinated the anthocyanindin and chlorophyll content in different parts of Prunus wilsonii leaves,results showed that,as time changes,anthocyanins content in different parts of the leaves showed a low-high-low change in trend,the analysis of variance,the difference is not significant,relations between anthocyanidin content in Prunus wilsonii leaves and the position of health was not obvious,anthocyanindin content in the same part are far greater than chlorophyll content,...

用分光光度法对紫叶稠李叶片不同部位的花青素和叶绿素进行了测定，结果表明，随着时间的变化，不同部位叶片的花青素均呈现低-高-低的变化趋势，经方差分析，差异性不显著，说明紫叶稠李叶片花青素含量跟着生的部位关系不明显；同一部位的花青素含量远远大于叶绿素含量，这也是紫叶稠李叶片在整个生长季呈现紫红色的原因。

Methods The UV method for determination of asarone and diprophlline in their mixed solution was established, by which they were assayed when the mixed solution was set at 24 during 6h.

将细辛脑、二羟丙茶碱加入葡萄糖注射液中，混合均匀后，建立细辛脑与二羟丙茶碱混合液紫外分光光度法含量测定方法，分析混合液在室温下(25℃)8 h内2药含量，并观察其pH值、外观、微粒及紫外光谱及峰形变化。

We applied spectrophotometric method to detect the total content of barbaloin in the hydrolysis of aloe vera gels. Relative standard deviation was 2.39%and recovery 90.1%.

本文用分光光度法测定水解后的市售某芦荟胶囊中芦荟甙的总含量，并进行了回收率和精密度试验，结果较为满意。

NO content and NOS activity were assayed with benzidine fluorescence spectrophotometry.

NO含量和NOS活性采用联苯胺荧光分光光度法测定。

The nitrite in food was converted to manganese bioxide precipitate by potassium permanganate under acid condition. The precipitate was dissolved in sulphuric acid and the absorptivity of manganese was determined by atomic absorption spectroscopy, so that the content of nitrite was obtained indirectly.

在酸性条件下，用高锰酸钾将食品中的亚硝酸盐先转化成二氧化锰沉淀，再用硫酸溶解沉淀，以原子吸收光谱法测定锰的吸光度，从而间接得到亚硝酸盐的含量，回收率在97.6%~105.2%之间。

A diphenylcarbazide photometry with the bromocresol green as the internal standard for the determination of chromium in the water has been developed.

采用溴甲酚绿为内标，二苯碳酰二肼光度法测定水体中的六价铬。

A new method was developed for detection of the hydroxyl radical in Fenton reaction by bromocresol green oxidative assay. After oxidized by hydroxyl radical, the absorbance of bromocresol green is decreased apparently.

利用Fenton反应产生的羟基自由基与染料试剂溴甲酚绿(Bromocresol green， BG)发生氧化反应后使其吸光度值降低，建立了一种可间接测定羟基自由基的新方法。

Keywords Catalytic spectrophotometry, surfactant, bromocresol green, silver

本法是迄今为止催化光度法测定银的最灵敏方法之一。

The conclution is confiemed mutually by the tested result of TBAB distribution coefficients in the differen phases in Benzene/TBAB/water/KBr system,the distribution coefficients is tested by the method of Bromothymol Blue Spectrophotometric Determination.

得到结论同溴百里酚蓝分光光度法测定苯/TBAB/水/KBr体系各相态中TBAB分配系数的结果相互验证。

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。