| 食品中亚硝酸根的荧光动力学分析法 |
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| 引用本文： | 梁宇,李睿,樊静.食品中亚硝酸根的荧光动力学分析法[J].河南师范大学学报(自然科学版),2013,41(4):77-80. |
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| 作者姓名： | 梁宇 李睿 樊静 |
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| 作者单位： | 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,河南新乡453007;新乡学院化学与化工学院,河南新乡453000
2. 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,河南新乡453007 |
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| 基金项目： | 国家自然科学基金，河南省重点科技攻关项目 |
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| 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%.
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| 关 键 词： | 动力学分析 亚硝酸根 环境水样 食品 |
Fluorescence Kinetics Analysis for Nitrite in the Food |
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| LIANG Yu
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LI Rui
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FAN Jing.Fluorescence Kinetics Analysis for Nitrite in the Food[J].Journal of Henan Normal University(Natural Science),2013,41(4):77-80. |
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| Authors: | LIANG Yu LI Rui FAN Jing |
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| Institution: | 1(1.School of Environment,Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control,Ministry of Education,Henan Key Laboratory for Environmental Pollution Control,Henan Normal University,Xinxiang 453007,China;2.College of Chemistry and Chemical Engineering,Xinxiang University,Xinxiang 453000,China) |
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| Abstract: | 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 0.033μg/mL,this method has been used to determine trace nitrite in foodstuffs and environmental water samples with the recoveries of 94.3%～105.7%. |
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| Keywords: | kinetic analysis nitrite environmental water samples foodstuffs |
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