β-环糊精包合中性红荧光光度法测定食品中的亚硝酸根  

Determination of Nitrite by Fluorescence Spectrometry with Neutral Red included in β-Cyclodextrin

作　　者：覃世杰[1] 金文英[2] 海洪[2] 

机构地区：[1]中国有色桂林矿产地质研究院有限公司,广西桂林541004 [2]桂林理工大学化生学院,广西桂林541004

出　　处：《现代食品科技》2013年第6期1400-1402,1380,共4页Modern Food Science and Technology

基　　金：广西教育厅科研项目(200911LX120);珍稀濒危动植物生态与环境保护省部共建教育部重点实验室研究基金(桂科能1102K003)资助

摘　　要：合成β-CD-中性红包合物,研究其在盐酸介质中与NO2-的亚硝化反应。结果表明,在盐酸介质中,NO2-在0-120μg/L范围之内与荧光猝灭程度成正比,常见的共存离子不干扰其测定。所拟方法用于食品中NO2-的测定,结果满意。An inclusion complex was prepared via synthesis of β-CD and neutral red envelope and the reaction of this complex with nitrite in hydrochloric acid was investigated.The results showed that,in hydrochloric acid,the inclusion complex can directly react with nitrite.The detection limit and relative standard deviation were within the rage of 0-120 μg/L,the NO2-content showed a linear relation with the fluorescence quenching spectrum.Common coexisting ions did not interfere with its determination.The proposed method can be used for water samples in the determination of nitrite with satisfactory results.

关 键 词：Β-环糊精 亚硝酸根 中性红 荧光光度法 

分 类 号：TQ461[化学工程—制药化工]