室内空气质量指标关系的对应分析与同质分析

Study on the Relationship of Indoor Air Quality Indexes by Correspondence Analysis and Homogeneity Analysis

[目的 ]研究室内环境 (卡拉 OK歌舞厅等有中央空调者 )空气质量指标 (细菌总数、二氧化碳、湿度、负离子和开场时间 )的相互关系 ,提出改进意见。 [方法 ]调查各指标 ,据其百分位数分为 3个水平 ,以 SPSS10 .0的对应分析(ANACOR)与同质分析 (HOMAL S)命令 ,进行数据处理与绘图。 [结果 ]对应分析表明 :细菌总数与二氧化碳、二氧化碳与开场时间、细菌总数与开场时间 ,各 2个变量及其 3个水平间关系密切 ;同质分析表明 :各 3个变量其 3个水平间关系也密切 :细菌总数、二氧化碳与开场时间 ,细菌总数、二氧化碳与负离子浓度。二氧化碳、细菌总数随开场时间延长而增加 ;高二氧化碳的环境常常细菌总数高而负离子浓度低。 [结论 ]在一定条件下 ,室内空气中的二氧化碳含量能反映空气中的细菌污染情况 ;加强通风 ,适当增加湿度 ,可增高负离子浓度并改善空气质量。对应分析法与χ2 检验结果相同 ,且能更形象。

To study the relationships of indoor place (Kara OK dancing halls etc with central air conditioning) air quality indexes, total number bacteria (BAC), carbon dioxide (CO2), humidity (HUM), negative ion (NI), opening time (TIM) and make the evaluation and suggestion for the environment. The data were divided into 3 levels based on its percentile and analyzed by correspondence analysis (ANACOR) and homogeneity analysis (HOMALS) in SPSS 10.0. When analyzing by ANACOR, between 2 variables and its 3 levels, there were some relationships between BAC and CO2, CO2 and TIM, BAC and TIM. When analyzing by HOMALS, among 3 variables and its 3 levels, there existed some relationships too: BAC, CO2 and TIM; BAC, CO2 and NI. The increasing of CO2 and BAC were accompanied with TIM. The higher CO2 value lead to have higher BAC and less NI. [Conclusion] Under certain conditions, CO2 density can express the status of the air bacteria. Increasing the ventilation and the humidity suitably can raise NI concentration and improve air quality. The analytical results of the air quality by ANACOR and HOMALS are the same as χ 2 test, especially they can be clearly shown in the plots with 2 or 3 axes. Sometimes they are more sensitively and directly to show the relationships of indoor air quality indexes.