分光光度法测定聚维酮碘中的碘  

Determination of Iodine in Povidone Iodine Solution by Spectrophotometry

作　　者：张振南[1] 戴歌心[2] 孙哲[1] 王学宝[1] 

机构地区：[1]温州医学院分析测试中心 [2]温州医学院附属第一医院,浙江省温州市325000

出　　处：《光谱实验室》2010年第4期1667-1670,共4页Chinese Journal of Spectroscopy Laboratory

摘　　要：建立分光光度法测定聚维酮碘溶液中碘含量的方法。在酸性条件下,利用过氧化氢溶液将聚维酮碘溶液中结合碘转化为游离碘,用二氯甲烷萃取碘,采用分光光度法进行含量测定,碘的二氯甲烷溶液在504nm处有最大吸收,有效碘浓度在0.0001—0.002mol·L-1范围内线性关系良好(r=0.9995),平均回收率(n=9)为99.48%。该方法操作简便,结果准确,重现性好,可用于聚维酮碘溶液的质量控制。Method for the determination of iodine from povidone iodine solution was developed by the spectrophotometry.The bound iodine in Povidone iodine solution was changed to free iodine by H2O2 in the acidic environment.Then the iodine was solved by CH2Cl2 and the content was determined by spectrophotometry.The solution of iodine solved in CH2Cl2 had max absorbance at 504nm wavelength.The 1inear range of iodine was 0.0001—0.002mol·L-1（r=0.9995）,the average recovery（n=9） was 99.48%.The method is convenient,accurate,reproducible and suitable for the quality control of Povidone iodine solution.

关 键 词：分光光度法 聚维酮碘 碘 

分 类 号：O657.32[理学—分析化学]