影子
第2楼2009/04/30
您可能没明白我的意思。
在欧洲药典3.1.3 Polyolefines中有一红外鉴别测试,要求在1170 cm−1波数处有最大吸收,如果实际测得的结果是在1165 cm−1处有最大吸收,那么这个结果是否可以说是符合的呢?药典原文如下:
Test A: To 0.25 g add 10 ml of toluene R and boil under a reflux condenser for about 15 min. Place a few drops of the solution obtained on a sodium chloride slide and evaporate the solvent in an oven at 80 °C. Examine by infrared absorption spectrophotometry (2.2.24). The spectrum of the material to be examined shows maxima in particular at some of the following wave-numbers : 2920 cm−1, 2850 cm−1, 1475cm−1, 1465cm−1, 1380 cm−1, 1170 cm−1, 735cm−1, 720cm−1; the spectrum obtained is identical to the spectrum obtained with the material selected for the type sample. If the material to be examined is in the form of sheets, the identification may be determined directly on a cut piece of suitable size.