分光光度法测葡萄酒的色度

Measuring the color of red wine by a spectrophotometer

本文探讨了用分光光度计测葡萄酒色度的方法及注意的问题。红葡萄酒的色度可用其在420nm,520nm,620nm下的吸光值之和表示,但是直接测其吸光值和稀释液,其结果不同,应根据吸光值的范围来决定使用方法;另外,葡萄酒色度还受pH影响,随着pH增大,色度值也增大。

The color of red wine can be analyzed by a spectrophotometer,Absorbance was monitored at three wavelengths:420,520,620nm,you can add these three absorbance,this effect is the color of red wine.Furthermore,different value PH can affectthe color of red wine.