阿拉伯胶胶束增稳维多利亚蓝B分光光度法测定食品中碘含量  

Determination of Iodine in Food Samples by Arabia Gum Stabilized Victoria Blue B Spectrophotometry

作　　者：沙鸥[1] 丁军楠 周妘 刘英红[1] 马卫兴[1] 

机构地区：[1]淮海工学院化学工程学院,江苏连云港222005

出　　处：《中国调味品》2012年第10期74-76,83,共4页China Condiment

基　　金：国家自然科学基金(21101069);淮海工学院2011年自然科学类校内课题(Z2011020);2011江苏省海洋资源开发研究院科技开放基金(JSIMR111326)

摘　　要：在硫酸介质中,阿拉伯胶存在下,IO3-氧化I-生成I3-,再与维多利亚蓝B形成离子缔合物,该缔合物在650nm波长存在最大吸收,碘酸根的浓度在一定范围内与吸光度呈线性关系,据此建立了测定碘酸根的IO3--I--维多利亚蓝B分光光度法,方法用于含碘食盐、海带及紫菜中碘含量的测定,结果令人满意。It was found that in the H2 SO4 and Arabia Gum medium, potassium iodate reacts with KI to give KI3 , which further reacts with Victoria blue B forming an ion-association complex which has the maximal absorbance at 650m respectively. Under the optimum conditions for this reaction system , good linear relationship was found between the absorbance and concentration of KIO3. Based on these facts, a simple sensitive and accurate absorptiophotometric method for the determination of KIO3 was proposed and it has been satisfactorily applied to the analysis of food sample.

关 键 词：碘 维多利亚蓝B 光度法 

分 类 号：TS207.3[轻工技术与工程—食品科学]