欢迎访问《环境科学学报》编辑部网站！

快速检索			高级检索

研究论文

刘阳生,沈兴兴,毛小苓,陈睿.北京市冬季公共场所室内空气中TSP, PM₁₀, PM_2.5和PM₁污染研究[J].环境科学学报,2004,24(2):190-196

Indoor air levels of TSP, PM₁₀, PM_2.5 and PM₁ at public places in Beijing during wintertime

摘要：在北京市的海淀区、朝阳区、丰台区和昌平区选择了49个公共场所(包括办公室、宾馆、图书馆、超市等等), 分别对其室内空气中TSP, PM₁₀, PM_2.5和PM₁的浓度进行了测定, 并且对室内空气中粉尘含量的影响因素进行了分析和探讨.研究结果表明, 繁忙的交通状况和建筑施工将明显增加公共场所室内空气中TSP, PM₁₀, PM_2.5和PM₁浓度.频繁的室内清扫有助于降低室内空气中颗粒物的浓度.在室内空气中, PM₁₀浓度与TSP浓度呈现明显的正向线性相关性, 而PM_2.5和PM₁的浓度与PM₁₀浓度的相关性较差

Abstract：The objectives of this study were to characterize the indoor levels of TSP, PM₁₀, PM_2.5 and PM₁ at 49 public places representing different environments in urban area of Beijing. Additionally, the I/O ratios at nine public places were studied to understand the relationship between indoor and outdoor levels. The results indicated that indoor pollution caused by TSP, PM₁₀, PM_2.5 and PM₁ in the restaurants （RE） was most serious, and that in the libraries （LI） was the least. Construction activities and traffic conditions were the major factor influencing the indoor levels of TSP, PM₁₀, PM_2.5 and PM₁ at public places. The low I/O ratios indicated that the outdoor particles was one of the sources of the indoor particles. The indoor levels of TSP, PM₁₀, and PM_2.5 were well correlated with their corresponding outdoor concentrations. Only PM₁ was less correlated with its corresponding outdoor concentration （R²<0.7）. The indoor PM₁₀ levels were well correlated with indoor TSP levels. Over 60% of TSP belonged to PM₁₀. The levels of PM_2.5 and PM₁ accounted for over 33% and 14%, respectively, of PM₁₀ levels. PM_2.5 and PM₁ levels were less correlated with PM₁₀ levels.