| 1. | Solid - phase extraction - ultraviolet derivative spectrum methods is seldom researched in our country at present
固相萃取、紫外导数光谱法国内研究尚少。 |
| 2. | The eluate was evaporated , the residue was dissolved with 4 . 0ml of 0 . 1mol / l hcl solution , determine the 2nd derivative spectrum referring to o . lmol / l hcl solution
Lmol l的盐酸溶液4 ， oml溶解剩余物，以0 lmol l的盐酸溶液为参比，测定二阶导数光谱图。 |
| 3. | Ultraviolet derivative spectrum method is a new examination method based on ultraviolet spectrum method since 70s , which is simple and quick and can effectively get rid of the disturbance of impurity , and the sensitivity of which is high
紫外导数光谱法是70年代以来在紫外光谱法基础上发展起来的具有操作简便快速、能有效消除杂质干扰、灵敏度较高等优点的检测方法。 |
| 4. | The solution was divided two portios and equal dilution with 2ml of 0 . 45mol / l naoh and 2ml 0 . 6mol / l kc1 - h3bo3 buffer obtained ph14 and ph10 solution respectively . the 2nd derivative spectrum of ph14 solution was measurement with phio solution as reference solution
Oml0石mol l氯化钾一硼酸缓冲溶液制成ph14及ph10的溶液，以ph10的溶液为参比，测定ph14溶液的二阶导数光谱图。 |
| 5. | From absorption spectra and the second - order derivative spectra , three absorption speaks of excitons were clearly resolved . at the same time , the first exciton absorption peak got stronger with decreasing nanocrystals size . blue shifts due to quantum confinement were observed obviously
纳晶吸收谱及二次微分谱的测量结果表明，纳晶在室温出现了三个激子吸收峰，第一激子吸收峰随纳晶半径减小而增强，同时清楚地观察到纳晶受限导致的光谱蓝移。 |
| 6. | Contrasted with rhizoma dioscoreae raman spectra , in 600 to 800 , 1000to 1400regions , changes in rhizoma dioscoreae raman first derivative spectra , are represented more clearly than rhizoma dioscoreae raman spectra . so rhizoma dioscoreae raman first derivative spectra can be a accurate analysis method , supplied to rhizoma dioscoreae raman spectra
中文是：对比山药拉曼光谱，在600到800 ， 1000到1400区域内，山药拉曼一阶导数谱的变化更为明显，可以更为清晰的表现山药拉曼光谱，能作为山药拉曼光谱更精确分析的补充方法。 |
