包头市儿童卧室内醛酮类化合物污染调研

Characterization of carbonyl compounds in children's room in Baotou City

为研究包头市儿童卧室的空气中醛酮类化合物的污染水平及影响因素,2014—2015年在包头市四大城区随机选取了100户家庭,对采集的室内空气进行了12种醛酮类化合物的高效液相色谱检测和分析。本次调研是全国性计划"中国室内环境与儿童健康(CCHH)"的第二阶段。调研结果表明,包头市儿童卧室内主要的醛酮类化合物为甲醛、乙醛、丙醛,采暖季平均值分别为227.04、87.73和53.65μg·m^(-3),非采暖季分别为189.17、60.43和40.85μg·m^(-3),采暖季浓度高于非采暖季,其中甲醛在采暖季和非采暖季超标率分别为100%和87.5%。采暖季和非采暖季中甲醛和乙醛浓度均与换气次数呈负相关。采暖季和非采暖季中室内较高的相对湿度是甲醛、乙醛和丙醛暴露的危险因素。

In order to study the characterization of carbonyl compounds pollution and the influence factors of the children＇s room in Baotou area,A suvey of 100 sampling points randomly selected from four urban areas in Baotou were implemented from 2014 to 2015.12 kinds of carbonyl compounds of the indoor air were measured by the high performance liquid chromatography methods.This study is the second stage of the China,Children,Homes,Health （CCHH） project.The results show that the main carbonyl compounds in the children＇s room are formaldehyde,acetaldehyde and propionaldehyde and the average concentration are 227.04,87.73 and 53.65μg·m^-3 in heating season and 189.17,60.43 and 40.85 μg·m^-3 in non-heating season.The concentration in heating season is higher than the non-heating season.The exceeding standard rate of formaldehyde in heating and non-heating season are 100% and 87.5% respectively.The air exchange rate has a significant negative correlation with formaldehyde and acetaldehyde in heating and non-heating season.The higher relative humidity is a risk factor for formaldehyde,acetaldehyde,propionaldehyde in heating and non-heating season.