详细信息
文献类型:期刊文献
中文题名:食品中亚硝酸根的荧光动力学分析法
英文题名:Fluorescence Kinetics Analysis for Nitrite in the Food
作者:梁宇[1,2];李睿[1];樊静[1]
第一作者:梁宇
机构:[1]河南师范大学环境学院,河南省环境污染控制重点实验室,黄淮水环境与污染防治省部共建教育部重点实验室;[2]新乡学院化学与化工学院
第一机构:河南师范大学环境学院,河南省环境污染控制重点实验室,黄淮水环境与污染防治省部共建教育部重点实验室
年份:2013
期号:4
起止页码:77-80
中文期刊名:河南师范大学学报:自然科学版
收录:CSTPCD;;北大核心:【北大核心2011】;
基金:国家自然科学基金(20977025);河南省重点科技攻关项目(102102210043)
语种:中文
中文关键词:动力学分析;亚硝酸根;环境水样;食品
外文关键词:kinetic analysis; nitrite; environmental water samples; foodstuffs
摘要:在酸性介质中,亚硝酸根能够催化类Fenton试剂氧化罗丹明B使其荧光猝灭,据此建立了催化动力学荧光法测定痕量亚硝酸根的新方法.系统研究了反应时间、温度、反应介质及各试剂的最佳用量以及共存物的干扰情况.在最佳条件下,该方法的线性范围为0.040~0.480μg/mL,检测限为0.033μg/mL,直接用于鱼干、肉制品等食品和环境水样中痕量亚硝酸根的测定,回收率94.3%~105.7%.
A catalytic kinetic fluorimetric method was established for the determination of trace nitrite. It is based on the enhancing effect of nitrite on the oxidation reaction of rhodamine B by fenton-like agent in acidic medium. Different influencing factors, including reacting time, temperature, reaction medium, reagent dosage and the influence of coexisting substances on the determination, were studied. Under the optimal conditions, the linear range for the determination of nitrite is 0. 040-0.48 μg/mL and the limit of detection is 0. 033 μg/mL, this method has been used to determine trace nitrite in foodstuffs and envi- ronmental water samples with the recoveries of 94.3%-105.7%.
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