杭州综合医院PM2.5浓度变化规律研究

对杭州市解放军117医院、浙江医院、邵逸夫医院和浙江省人民医院4所综合医院PM_2.5浓度进行测定，分析其PM_2.5污染水平、日变化规律、与植物群落、温度、湿度及其和PM₁₀之间的关系，进一步测定和分析医院室内和室外PM_2.5的污染水平及相关关系。结果表明:4所综合医院PM_2.5污染水平较低；日变化呈“双峰单谷”型；PM_2.5与植物群落层次无直接关系，但绿地中的PM_2.5颗粒物含量明显低于空地；PM_2.5与温度呈负相关关系与空气湿度呈正相关关系；PM_2.5/PM₁₀为0.44~0.59之间；医院病房内PM_2.5浓度较之室外要低，能达到美国PM_2.5控制标准，且室内外PM_2.5之间存在着一定的相关性。

Variation Rules of PM2.5 in 4 Hospitals in Hangzhou

Concentrations of PM_2.5 in 4 general hospitals (117 Hospital of PLA, Zhejiang Hospital, Hospital of Shao Yifu, and People’s Hospital of Zhejiang Province) located in Hangzhou were measured. The pollution levels of PM_2.5 (PML) and diurnal variation patterns were analyzed. The relationship between PML and plant community, temperature, humidity, and PM10 were also examined. Furthermore, PML indoor and outdoor in 4 hospitals and the correlations among the hospitals were investigated. The results showed that PLOP in 4general hospitals were low. Relative higher PML appeared in the morning and late afternoon. No direct correlation was observed between PM_2.5 plant community. However, PML in green space was significantly lower than the open space. PML was negatively correlated with temperature, and positively correlated with air humidity. The ratios of PM_2.5/PM₁₀ were between 0.44~0.59. PML indoor was lower than that outdoor, that could reach the standard of the U.S. PM_2.5 control. Certain correlations were found between PM_2.5 indoor and outdoor.