METHOD FOR DETECTING CONTENT OF POLYVINYL ALCOHOL BY MEANS OF SPECTROPHOTOMETRY

The present invention relates to the field of medical detection. Specifically provided is a method for detecting the content of polyvinyl alcohol by means of spectrophotometry. In the method, hydroxylamine chloride or hydroxylamine chloride derivatives and metal ions are used as chromogenic agents to detect the content of medicinal polyvinyl alcohol, and the method has a good specificity and is suitable for the detection of all PVAs that are not completely alcoholized. The method has a high accuracy and a good reproducibility, is not affected by the polymerization degrees of the PVAs, a long chain structure and a hydroxyl molar concentration, has a high universality, and successfully meets the need for accurately detecting the content of medicinal polyvinyl alcohol in the industry. The method for detecting the content of medicinal polyvinyl alcohol is developed, which fills the gap in terms of detecting the content of medicinal polyvinyl alcohol in the industry. La présente invention se rapporte au domaine de