| 催化动力学分光光度法测定痕量甲醛 |
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| 引用本文： | 王晓晖,陈晓红,张连丽,年国芹.催化动力学分光光度法测定痕量甲醛[J].广东微量元素科学,2008,15(12):45-47. |
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| 作者姓名： | 王晓晖 陈晓红 张连丽 年国芹 |
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| 作者单位： | 1. 内蒙古民族大学化学学院,内蒙古,通辽,028043
2. 内蒙古通辽市实验中学,内蒙古,通辽,028000 |
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| 基金项目： | 内蒙古民族大学自然科学基金资助课题 |
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| 摘 要： | 在稀硫酸溶液中，甲醛对溴酸钾氧亚甲蓝褪色反应有催化作用，研究其动力学条件，建立了测定痕量甲醛的动力学光度分析方法。结果表明，该法线性范围为0.00～0．80μg·L^-，检出限3．315×10^-8g·mL^-1。该法用于食用菌、杏仁和漆料的浸泡液中痕量甲醛的测定，标准加入回收率为96．7％～104．2％
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| 关 键 词： | 甲醛 亚甲蓝 溴酸钾 催化动力学光度法 |
Determination of Trace Formaldehyde by Catelytic Kinetic Spectrophotometry |
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| WANG Xiaohui,CHEN Xiaohong,ZHANG Lianli,NIAN Guoqin.Determination of Trace Formaldehyde by Catelytic Kinetic Spectrophotometry[J].Trace Elements Science,2008,15(12):45-47. |
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| Authors: | WANG Xiaohui CHEN Xiaohong ZHANG Lianli NIAN Guoqin |
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| Institution: | WANG Xiaohui, CHEN Xiaohong, ZHANG Lianli, NIAN Guoqin (1. College of Chemistry , Inner Mongolia University for Nationalities, Tongliao 028043, China; 2. Tongliao Experiment High School, Inner Mongolia Tongliao 028000, China) |
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| Abstract: | A kinetic spectrophotometric method for determination of trace formaldehyde was developed is based on the accleration effect of form adehyde on the oxidation reaction of methylone - blue by KBrO3 in sulphurie acid medium . The linear range is 0. 00 -0. 80 μg · mL^-1 with the detection limit of 3. 135 × 10^-8g · mL^-1. The procedure was used to determine the formaldehyde in soak solution samples of edible fungus, almond and vehicle. The recoveries in standard addition method were 96. 7% - 104.2%. |
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| Keywords: | formaldehyde potassium bromate methylthioninium chloride kinetic spectrophotometery |
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