流动注射分光光度法测定食品中的微量硼  

DETERMINATION OF BORON IN FOODSTUFFS BY FLOW INJECTION SPECTROPHOTOMETRY

作　　者：李紫薇[1] 陶冠红[2] 高红艳[1] 

机构地区：[1]新疆伊犁师范学院,化学与生物科学学院,新疆伊宁835000 [2]苏州大学,化学化工学院,江苏苏州215000

出　　处：《食品研究与开发》2008年第5期99-101,共3页Food Research and Development

基　　金：伊犁师范学院2008年度科研计划一般项目(2008YB09)

摘　　要：基于硼和3-甲氧基-甲亚胺H在HAC-NH4AC缓冲溶液中的显色反应,建立了流动注射光度分析测定微量硼的新方法。在28样/h采样频率下检出限为0.033mg/L,硼浓度在0.033mg/L～5mg/L范围内符合比耳定律,相对标准偏差为0.54%。该法快速,简便、灵敏、试剂用量少、选择性好,用于食品中微量硼的测定,结果令人满意。A new method for determination of boron in foodstuffs by flow injection analysis is described, which is based on the coloration of boron and 3-methoxy-azomethine-H in an acid medium. The calibration graph is linear in range of 0.033 mg/L-5 mg/L B （ Ⅲ ）. A detection limit of 0.033 mg/L is achieved at a sampling frequency of 28 samples/h.The relative standard deviation is 0.54 % for the determination of 3 mg/L B （Ⅲ） （n= 11）.This method is simple, fast, sensitive and accurate. The proposed method has been applied to the analyses of several foodstuffs with satisfactory results.

关 键 词：流动注射分光光度法 硼 3-甲氧基-甲亚胺H 食品 

分 类 号：TS207.3[轻工技术与工程—食品科学] O657.3[轻工技术与工程—食品科学与工程]