轨道交通甲醛测试方法的适用性对比

Applicability Comparison of Formaldehyde Test Methods for Rail Transit

一直以来,甲醛因其具有危险性而备受关注,是轨道交通环境中的主要有害物质之一。本文分析了三种测定甲醛常用方法的优缺点:一种是色谱方法,在液相色谱柱上分离并通过检测器进行甲醛检测;另外一种测试甲醛的精密方法是酚试剂分光光度法;最后一种是用电化学甲醛分析仪测定甲醛。三种方法各有其优点和限制,本文主要针对测定轨道交通车辆内甲醛含量的不同方法展开讨论,以期为轨道交通行业中测定甲醛含量提供技术参考。

Formaldehyde has always been a major concern because of its danger,and is one of the main harmful substances in the rail transit environment.This paper analyzes the advantages and disadvantages of three common methods for the determination of Formaldehyde:one method is to separate Formaldehyde on a liquid chromatographic column and detect Formaldehyde through a detector;Another method for precise determination of Formaldehyde is phenol reagent spectrophotometry.The last method is to determine Formaldehyde with electrochemical Formaldehyde analyzer.The three methods have their own advantages and limitations.This paper mainly discusses the different methods for determining Formaldehyde content in rail transit vehicles,with a view to providing technical reference for determining Formaldehyde content in rail transit industry.