铂电极对应用于f甲醛3的分析测试(正稿).doc

PAGE  目　录  TOC \o 1-3 \h \z \u  HYPERLINK \l _Toc387596761 前言  PAGEREF _Toc387596761 \h 1  HYPERLINK \l _Toc387596762 1实验部分  PAGEREF _Toc387596762 \h 1  HYPERLINK \l _Toc387596763 1.1仪器和试剂  PAGEREF _Toc387596763 \h 1  HYPERLINK \l _Toc387596764 1.2实验操作  PAGEREF _Toc387596764 \h 1  HYPERLINK \l _Toc387596765 2结果与讨论  PAGEREF _Toc387596765 \h 1  HYPERLINK \l _Toc387596766 2.1甲醛在铂盘电极上的伏安行为和工作条件的选择  PAGEREF _Toc387596766 \h 1  HYPERLINK \l _Toc387596767 2.2工作曲线  PAGEREF _Toc387596767 \h 2  HYPERLINK \l _Toc387596768 2.3 线性范围、检测限及回收率  PAGEREF _Toc387596768 \h 3  HYPERLINK \l _Toc387596769 2.4用于对水溶性涂料中甲醛含量的检测  PAGEREF _Toc387596769 \h 3  HYPERLINK \l _Toc387596770 3结论  PAGEREF _Toc387596770 \h 4  HYPERLINK \l _Toc387596771 致谢  PAGEREF _Toc387596771 \h 5  HYPERLINK \l _Toc387596772 参考文献  PAGEREF _Toc387596772 \h 6  铂电极应用于甲醛的分析测试的研究 吴丽莉 指导老师:邹如意 上饶师范学院 化学化工学院 10化1班 摘 要 利用循环伏安法研究在0.5mol/L的KCl介质中甲醛在铂盘电极上氧化还原行为，并通过甲醛溶液与氧化峰电流关系的拟合回归曲线，其相关系数为0.99989，用于甲醛浓度测定，回收率达97.4%。该方法检测涂料中甲醛含量为0.07g/kg，符合标准，方法可行。 关键字 甲醛; 铂电极; 循环伏安曲线; 涂料 Platinum electrode is applied to the analysis of formaldehyde test research Abstract Cyclic voltammetry was used to study the behavior of the formaldehyde’s REDOX on platinum plate electrode in KCl(0.5 mol/L)solution, and regression curve was fitted what accordinged to the relationship between formaldehyde solubility and oxidation peak current, its the correlation coefficient is 0.99989, This method was used for determination of formaldehyde concentration, the recovery rate was 97.4%. The method was used for detecting formaldehyde content in the painting, The results show that the mass concentration is 0.07 g/kg, what conforms to the standard [GB18582-2001], and the method is feasible. Keyword formaldehyde; platinum electrode; cyclic voltammetry curve; painting  PAGE 6 前言 甲醛具有较高的毒性和致癌作用，它广泛存在于环境中，严重危害人类健康。通常测定甲醛的方法有分光光度法[1] 、色谱法[2] 、极谱法[3] 和电化学传感器法[4] 等。分光光度法和色谱法分析周期较长