The effects of interior wall materials on indoor air quality

本文提出了一种新开发的室内装饰材料气体化学去除性能的小型测试系统。该系统设计用于进行动态分析，它由一个放置测试材料的小型气流通道装置和一个用于检测气态污染物的分析元件组成。六种内墙材料和“褐铁矿”，这是一种在阿索山开采的天然土壤，设置在通道装置。通入硫化氢或甲醛气体，使其通过中间板空腔内的材料表面，用荧光监测仪测量通道出口处的浓度。结果表明，7种材料按去除机理可分为3类：无效、物理和化学吸附。该试验装置体积小，方法简单，可方便地获得去除效率与流量的关系。

A newly developed mini-scale testing system for obtaining the gaseous chemical removal performance of interior finishing materials is proposed in this report. The system was designed to perform dynamic analysis and it consists of a small gas flow channel device, where the test material is placed, and an analysis element, for detecting gaseous pollutants. Six interior wall materials and "limonite", which is an natural soil mined in Mt.Aso, were set in the channel device. Hydrogen sulfide or formaldehyde gas was introduced, passed through the surface of the material inside the cavity of the middle plate, and the concentration at the outlet of the channel was measured by the fluorescence monitor. The results indicated that the seven materials could be classified into 3 types according to the removal mechanism: ineffective, physical and chemical adsorption. The relationship between removal efficiency and flow rate can be obtained easily by this small testing device and simple method.