摘要
基于在硫酸介质中，β-环糊精对亚硝酸根催化溴酸钾氧化二甲基黄的褪色反应具有增敏作用，建立了测定亚硝酸根的催化动力学光度法，测定亚硝酸盐的线性范围：0~20μg/L，加标回收率为96.20%~105.8%，6次测定的RSD小于4%。用于肉制品中亚硝酸盐的测定，结果令人满意。
A catalytic kinetic photometric method for determination of trace nitrite withβ-CD as sensitizer has been developed.The method was based on the fact that the color fading reaction of dimethyl yellow oxidized by potassium bromate in dilute H2SO4 solution was catalyzed by nitrite. The linear range for determination of selenium is 0-20μg/L. The recovery of standard addition was 96.20%-105.8%with precision of〈4%RSD （n=6）.The method had been applied to the determination of nitrite in pork products with satisfactory results.
出处
《食品研究与开发》
CAS
北大核心
2014年第1期80-82,共3页
Food Research and Development
