Objective To explore the effects of TSP in classroom air on teachershealth.Methods Air sampling was car-ried out nearby the platform in each in use-classroom at flow of100L/min continuously for6h(n=270)and in office building as controls(n=10)in a university.An investigation on the prevalence of respiratory diseases was performed also.Results The concentration s of TSP were0.10-0.88mg /m 3 in classroom air with a average level of0.38mg /m 3 ,and only0.09mg /m 3 in office air of the university,and0.194mg /m 3 in the ambient air respectively.The TSP concentrations in the classromms exceeded the National Standard of Ambient Air Quality GradeⅢ.The prevalence rates of respiratory diseases including acute and chronic phyryngitis,acute tracheobronchitis and chronic bronchitis were23.3%,73.9%,4.0%and17.4%for teachers,only4%,2.8%,3.2%and7.1%for administrative staff respectively.Con clusion The classroom air pollution by TSP had adverse effects on teachershealth in classrooms.

CO2.

Objective To study the effects of air quality on the the respiratory system of pupils. Methods Based on the routine monitoring data of Nanning City from Nanning environmental monitor station , all pupils from three elementary schools which located in heavy polluted area, middle polluted area and light polluted area respectively were investigated. The atmosphere quality was assessed with Shanghai Atmosphere Environmental Index. The illness data were collected by epidemiological investigation, questionnaire and physical examination. Chi-square test and Logistic regression were employed in the statistic analysis. Results The morbidity of bronchitis, pneumonia, asthma, rhinitis, etc. in pupils lived in heavy polluted area was higher than that in light polluted area (P

Objective To investigate the relationship between air pollution and respiratory diseases in Nanning. Methods To analyze the prominent pollutants in the last 12 years: total suspensible particulate (TSP), drop dust, sulphur dioxide (SO2) and nitrogen oxide (NOx) by using Shanghai Air Quality Index, and study the correlation between the above data and the constituent ratio of chronic odstructive lung disease(COPD) inpatients of Guanxi Zhuangzu Autonomous Region People's Hospital as well as the mortality of respiratory diseases in Nanning in the same period. Results The air pollution in Nanning was classified into coal pollution. The dominating pollutants were TSP, drop dust, SO2 and NOx. The epidemiology research showed that the mortality of respiratory diseases in industrial zone were 1.4-2.4 times of that in the city zoon, the city zone was less higher than suburb. During the most severe air pollution period in 1991-1995, the mortality of respiratory diseases was highest, and the inpatients of COPD in the hospital was relevant higher. Conclusion Air pollution is the primary environmental pathogeny and fatal factor for respiratory diseases.

Objective To explore the indoor air pollution and its health effects in newly decorated rooms. Methods Indoor air sampling was conducted in rooms of 13 newly decorated apartments during the period from the 1st day to the 4th day, the 2nd month and the 6th month after the decoration. The levels of formaldehyde, benzene, o-dimthylbenzene, m-dimethylbenzene, para-dimethylbenzene in air samples were analyzed. An epidemiological investigation on the adverse response of eye and respiratory system was carried out among the family members before and after decoration. Results The levels of formaldehyde, benzene and dimethylbenzene in indoor air exceeded ther related standards more than 2.92 times, 7.4-11.3 times, 58.2-87.1 times respectively, and showed a decreasing trend with the prolongation of time after decoration. The positive rates of shedding tears and sneezing, branchitis or cough, asthma, dizziness among family members were 0%, 3.0%, 3.0%, 0% respectirely before decoration and rose to 24.2%, 7.6%, 6.1%, 7.6% respectively after decoration. Conclusion The indoor decoration resulted in the indoor air pollution by formaldehyde and benzene compounds, the contamination degree showed a positive correlation with the degree of complicated decoration and was associated with the quality of decorative materials. Indoor decoration also resulted in the increasing positive rates of adverse response of eye and respiratory system.