| 非有机溶剂萃取催化荧光光度法测定痕量亚硝酸根 |
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| 引用本文： | 柯育梅,李少玲,李国清. 非有机溶剂萃取催化荧光光度法测定痕量亚硝酸根[J]. 韶关学院学报, 2011, 32(12): 41-45 |
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| 作者姓名： | 柯育梅 李少玲 李国清 |
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| 作者单位： | 泉州师范学院化学与生命科学学院,福建泉州,362000 |
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| 基金项目： | 福建省泉州市科技计划项目（2009C,9）;福建省高校服务广西重点建设项目（A102）,福建省大学生创新性实验计划项目（2010CXSY02）;泉州师范学院硕士点建设立项资助项目. |
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| 摘 要： | 在磷酸介质中以亚硝酸根催化溴酸钾氧化罗丹明B为研究体系,探讨了该体系在聚乙二醇-2000(PEG-2000)中的萃取催化行为及其影响因素,建立了催化荧光光度法测定痕量亚硝酸根的新方法.结果表明:该方法的检出限为1.65×10-7 g/L,线性范围为0.053-0.23 mg/L,用于测定蔬菜中痕量亚硝酸根的效果良好.
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| 关 键 词： | 萃取 亚硝酸根 罗丹明B 溴酸钾 |
Determination of trace nitrite by catalytic fluorescence spectrophotometric method |
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| KE Yu-mei,LI Shao-ling,LI Guo-qing. Determination of trace nitrite by catalytic fluorescence spectrophotometric method[J]. Journal of Shaoguan University(Social Science Edition), 2011, 32(12): 41-45 |
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| Authors: | KE Yu-mei LI Shao-ling LI Guo-qing |
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| Affiliation: | (Chemistry and Life Sciences School, Quanzhou Normal University, Quanzhou 362000, Fujian, China) |
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| Abstract: | Based on the phosphoric acid to nitrite catalytic oxidation by potassium bromate Rhodamine B for the system, this paper investigates on the catalytic extraction of this system in the polyethylene glycol 2000 （PEG-2000）, and sets forth a new method of catalytic spectrofluorometric determination of trace amounts of nitrite. The results showed that detect limitation of this method was 1.65×10-7 g/L, and the linear range was 0.053 -0.23 mg/L. The result for determination of trace nitrite in vegetables was good. |
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| Keywords: | extraction nitrite Rhodamine B potassium bromate fluorescence sgectrophotometric |
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