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土法炼硫生产过程中可排放较高浓度的SO_2,污染区冬、夏季均值分别为0.207和0.092mg/m~3。长期生活在附近地区的学龄儿童,咳嗽、咳痰、气喘的症状率明显增高(P<0.01),肺功能测定最大中期呼吸气流速(MMEF)明显降低,体重和胸围的发育受到抑制,非特异免疫指标唾液溶菌酶含量下降,认为土法炼硫污染导致了对学龄儿童健康的有害影响。
In the process of indigenous sulfur production, higher concentration of SO 2 can be discharged, and the mean values of winter and summer in the polluted area are 0.207 and 0.092 mg / m ~ 3, respectively. The symptoms of cough, expectoration and asthma in school-age children who lived in the vicinity for a long period of time were significantly higher (P <0.01), the maximal mid-term respiratory flow rate (MMEF) was significantly lower in lung function test, the development of body weight and chest was inhibited, Immunological indicators of saliva lysozyme decreased, that the indigenous sulfur pollution caused by the pollution of the health of school-age children’s harmful effects.