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.
出处
《食品研究与开发》
CAS
北大核心
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)
