波长测定各孔的吸光度 optical density difference ; OD
方法进行反应温度和时间对砷铈反应速率及测定吸光度影响的化学动力学实验分析。
Methods Experimental chemical kinetics study was conducted to determine the influence of reacting temperature and time on As3 + - Ce4 + reacting rate and to measure the absorbance.
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。
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.
结果表明，这些体系均存在空白液吸光度很低、工作液吸光度较高的较大的波长区间，是分光光度分析法中理想的测定体系；
The results show that the determination system is within the scope of widen wave length with low absorbency in blank solution and high absorbency in working solution.
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