| 胶体MnO2溶液-甲醛-C2O42-化学发光的新体系 |
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| 引用本文： | 杨育民,李红,杨福洲.胶体MnO2溶液-甲醛-C2O42-化学发光的新体系[J].光谱实验室,2012,29(3):1666-1669. |
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| 作者姓名： | 杨育民 李红 杨福洲 |
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| 作者单位： | 渭南职业技术学院 陕西省渭南市杜化路4号 714000 |
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| 基金项目： | 陕西省渭南市科技局科技攻关项目 |
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| 摘 要： | 研究发现,在酸性溶液中,当甲醛存在时,胶体二氧化锰溶液和C2O24-能够发生化学发光反应,产生强的化学发光,据此采用流动注射分析技术,建立了一种利用胶体二氧化锰-甲醛-C2O24-化学发光体系测定草酸的化学发光分析方法。该方法的检出限为8×10-8g/mL C2O42-;相对标准偏差为0.97%(8.8×10-6g/mL C2O24-,n=11);线性范围是4.4×10-7—8.8×10-5g/mL C2O42-。该方法所用的仪器设备简单,操作快捷方便,选择性好,可用于菠菜等蔬菜中C2O24-含量的测定。
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| 关 键 词： | 草酸根离子 化学发光 流动注射 胶体二氧化锰 甲醛 |
New Chemil uminescence System of Colloidal MnO2 Solution-Formal dehyde-C2O42- |
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| YANG Yu-Min
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LI Hong
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YANG Fu-Zhou.New Chemil uminescence System of Colloidal MnO2 Solution-Formal dehyde-C2O42-[J].Chinese Journal of Spectroscopy Laboratory,2012,29(3):1666-1669. |
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| Authors: | YANG Yu-Min LI Hong YANG Fu-Zhou |
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| Institution: | (Weinan Vocational and Technical College,Weinan,Shaanxi 714000,P.R.China) |
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| Abstract: | The chemiluminecence reaction of colloidal manganese dioxide solution and C2O42- in acidic solution occurred in the presence of formaldehyde with strong chemiluminescence,basing on which a analysis method for determination of the chemiluminescence of oxalic acid by colloidal manganese dioxide-formaldehyde-C2O42- was established.The detection limit of the method was 8×10-8g/mL,and the relative standard deviation was 0.97%(C2O42- content of 8.8×10-6g/mL,n=11),and the linear range was between 4.4×10-7g/mL and 8.8×10-5g/mL.The method has simple instrument,fast and convenient operation with good selectivity,and can be applied to determining the contents of C2O42- in spinach and other vegetables. |
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| Keywords: | C2O42- Chemiluminescence Flow Injection Colloidal Manganese Dioxide Formaldehyd |
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