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选择衡阳市二氧化硫污染程度不同的两地区9～12岁儿童进行肺功能测定与呼吸系统症状询问调查。结果表明：在SO2浓度为145μg／m3居住3年以以上长作用下，未引起小气道功能明显改变；多因素分析显示：儿童FEV1、FEV1％、MMF的降低与大气SO2浓度明星相关，且年龄、性别、身高及家用燃料种类与肺功能均有显著相关意义。
Choose Hengyang sulfur dioxide pollution levels of two regions of 9 to 12-year-old children for lung function tests and respiratory symptoms asked survey. The results showed that the small airway function did not change significantly when SO2 concentration was 145 μg / m3, and the multivariate analysis showed that the decrease of FEV1, FEV1% and MMF in children was related to the atmospheric SO2 concentration star, and the age Sex, height, type of household fuel and lung function were all significantly correlated.