论文部分内容阅读
利用合成新的Girard＇s试剂T,使之与甲醛反应生成电活性的产物,在银基汞膜电极上还原来检测甲醛.对影响这一测定方法的各种因素进行了研究,指出了最佳的实验条件,探讨了衍生反应和电极过程.应用这一方法测定浓度为5.0×10~(-6)mol/L的甲醛,重现性良好,其RSD为3.05%(n=8);对浓度为20×10~(-7)mol/L的甲醛测定7次,其检测限为7.6×10~(-8)mol/L.此外,这一方法能同时测定甲醛和乙醛.对家居环境中的空气取样,进行了实际样品的检测.
The synthesis of a new Girard’s reagent T, so that the reaction with formaldehyde to generate electroactive products, the silver-based mercury film electrode reduction to detect formaldehyde.A variety of factors that affect the determination of this method were studied, pointed out that the most Good reproducibility and electrode reaction were investigated, and the formaldehyde with the concentration of 5.0 × 10 ~ (-6) mol / L was determined by this method. The RSD was 3.05% (n = 8). For the determination of formaldehyde with a concentration of 20 × 10 -7 mol / L, the detection limit was 7.6 × 10 -8 mol / L. In addition, this method was able to determine formaldehyde and acetaldehyde simultaneously. The air in the home environment was sampled and the actual sample was tested.