| Triton X-100增敏催化动力学光度法测定痕量亚硝酸根 |
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| 引用本文： | 谢建鹰,邓经营,汤冬梅.Triton X-100增敏催化动力学光度法测定痕量亚硝酸根[J].光谱实验室,2012,29(1):353-356. |
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| 作者姓名： | 谢建鹰 邓经营 汤冬梅 |
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| 作者单位： | 上饶师范学院化学化工学院 334001 |
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| 基金项目： | 教育部第四批高等学校特色专业建设点资助项目 |
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| 摘 要： | 基于稀硫酸介质中,Triton X-100对亚硝酸根催化氯酸钾氧化甲基紫褪色反应的增敏作用,建立了测定痕量亚硝酸根的Triton X-100增敏催化动力学光度法.方法的线性范围为0.004-0.26μg·mL-1,检出限为9.24×10-10g·mL-1.测得反应表观活化能为75.33kJ·mol-1.方法简便、快速,选择性好.用于水样及蔬菜祥品中痕量亚硝酸根的测定,结果满意.
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| 关 键 词： | 催化动力学光度法 亚硝酸根 Triton X-100 甲基紫 |
Determination of Trace Nitrite by Catalytic Kinetic Photometry with Triton X-100 as Sensitizer |
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| XIE Jian-Ying
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DENG Jing-Ying
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TANG Dong-Mei.Determination of Trace Nitrite by Catalytic Kinetic Photometry with Triton X-100 as Sensitizer[J].Chinese Journal of Spectroscopy Laboratory,2012,29(1):353-356. |
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| Authors: | XIE Jian-Ying DENG Jing-Ying TANG Dong-Mei |
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| Institution: | (College of Chemistry and Chemical Engineering,Shangrao Normal College,Shangrao,Jiangxi 334001,P.R.China) |
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| Abstract: | Catalytic kinetic photometric method for the determination of trace nitrite with Triton X-100 as sensitizer was developed based on the catalysis of NO2- to the discoloring reaction of methyl violet oxidized by potassium chlorate in the dilute H2SO4.The linear range was 0.004—0.26μg · mL-1 for NO2-,and the detection limit was 9.24×10-10g · mL-1.The activation energy of the catalytic reaction was 75.33kJ · mol-1.This method was simple,rapidwith good selectivity.It was applied to the determination of trace nitrite in water and vegetable samples with satisfactory results. |
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| Keywords: | Catalytic Kinetic Photometry Nitrite Triton X-100 Methyl Violet |
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