紫外光谱法测定苯酚与苯胺和对苯二酚

苯酚、苯胺和对苯二酚在紫外区具有吸收。文章采用紫外光谱法,分别对苯酚、笨胺和对苯二酚不同浓度的溶液进行紫外扫描,结果表明苯酚、苯胺和对苯二酚的最大吸收波长分别为269.9 nm,280.30 nm,289.40 nm,对于同种物质不同浓度的溶液,其最大吸收波长相同;波长一定的情况下,物质的浓度越高,吸光度越大。然后通过加和性试验,分别对40 mg/L苯酚溶液、30 mg/L苯胺溶液、50 mg/L对苯二酚溶液进行紫外线扫描,将其相应波长的吸光度加和,再对单组分浓度相同的三组分混合溶液进行扫描,将实际加和与理论加和相比较,得出三组分的吸光度具有加和性。

Determination of Phenol Aniline and Hydroquinone by UV

Phenol,aniline and hydroquinone with absorption in the UV area.In this paper,the use of ultraviolet spectroscopy,respectively,of phenol,hydroquinone stupid amine and the solution of different concentrations for UV-scan results showed that the phenol,aniline and hydroquinone,respectively,the maximum absorption wavelength is 269.9 nm,280.30 nm,289.40 nm,for substances with different concentrations of solution,the maximum absorption wavelength is the same;the case of a certain wavelength,the higher the concent...