| Objective: In order to provide scientific basis for improving the construction of"Ecological Nanchang" ,the characteristic of air pollution in Nanchang City andpotential hazards have been studied. Methods: The atmospheric particulates inNanchang City were sampled ,and the contents of heavy metal elememnts,OCPs,PAHs of which have been analyzed. Meanwhile, the data related to air quality and theoutpatient cases related to air pollution in a hospital of Nanchang City have beencollected since 2003. Excel2003 and SPSS11.5 were used for data collection andstatistical analysis,and the relationship between atmospheric pollution and humanhealth have been studied.Results: (1) Industrial pollution was the main source ofheavy metal pollution of atmospheric particulates in Nanchang City. According topollution levels, the sequence was Zn>Mn>Pb>Cd>Cu>Cr>Ni. Road dust andbuilding dust of Nanchang was important factor ,which influenced the contents ofheavy metal elements of PM10. (2)Averave annual contents of OCPs of atmosphericparticulates in Nanchang city was 0.533 ng/m3, the seasonal changes were not evidentbesides HCB. 10 kinds organochlorine pesticides were detected in the air TSPsamples of Nanchang. The main pollutants were DDTs, |?-HCH,HEP and HCB. Inatmospheric particulates the concentration of DDTs was higher than that of HCHs.The average density of hexachlorobenzene (HCB) was 0.0401±0.0128 ng/m3. Theaverage concentrations of pesticides detected in PM10 were higher than those in TSPbesides |á-HCH and |?-HCH.(3) Three-ring and four-ring PAHs such as Phe(Phenanthrene), Flu (Fluoranthene), Pyr (Pyrene), Flo(Fluorene) were main pollutantsin Nanchang City, occupied 43.34%, 14.05%, 9.15%, 7.30% respectively in the totalPAHs.The day average concentration of PAHs among membrane filter ,foam and totalcontent were 12.951 ng/m3d, 65.608 ng/m3d, 78.5585 ng/m3d seperatively. The dayconcentration of PAHs in foam was 3～7 times than that of membrane filter .(4)There were intimate relationship among NO2,SO2 and PM10 in the air of NanchangCity.From 2006 to Oct. of 2009, the concentrations of SO2, NO2 and PM10 in the airwere 19.70±8.56μg/m3, 44.60±10.45μg/m3, 62.30±19.76μg/m3 respectively.Atmospheric temperature, relative humidity, wind speed and illumination inNanchang had close relationship with API.The relationship between API andtemperature within 200C was positive correlation, however negative correlationbetween API and temperature of 20 ~ 330C . The bigger the humidity,the smaller the API. The bigger the wind speed, the smaller the API. There was a difinite relationshipbetween illumination time and API.There were close correlation between API ofNanchang City and the outpatient numbers of cardiovascular disease, respiratorydiseases, ophthalmology disease & ear-nose-throat diseases (positive correlation).APIhad not effect on the outpatient numbers of skin diseases.Conclusion: The pollutionof heavy metal elements in atmospheric particulate (PM10) of Nanchang City did notallow to ignore.It was more easy for OCPs in the air to enrich in the PM10.The mainPAHs pollutants were three-ring and four-ring monomers in the air of NanchangCity.Although the air quality in Nanchang was in good state, the large hazard of airpollution to crowds health would exist.
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