一般办公环境粉尘污染特征分析
Dust particle characteristics in general office environment
摘要：
对典型办公室内的粉尘颗粒分布特征及室内外颗粒浓度比值进行了实验研究，结果表明，室内外的粉尘以小颗粒为主，1.0～3.0 μm粒径的颗粒分别占室内、外总悬浮颗粒物TSP质量的46.70%和45.06%；所有测试房间室内外TSP的I/O比值为0.61～0.72，PM10的I/O比值为0.64～0.74；I/O比值随粒径的增大而减小，变化范围为0.406～0.995，但与纯自然通风条件下不同，变化趋势为较小粒径时下降迅速，之后趋于平缓。
Abstract：
Experimentally studies the distribution characteristics of the indoor dust particles and the ratio of the indoor to outdoor particle concentrations (I/O). The results indicate that the indoor and outdoor particles are mainly smaller particles, with those of 1.0 to 3.0 μm in diameter accounting for 46.70% and 45.06% of the TSP of indoor and outdoor respectively; the I/O value of TSP is in the range of 0.61 to 0.72, and the I/O value of PM10 is in the range of 0.64 to 0.74; the I/O value reduces with the increase of the diameter and is in the range of 0.406 to 0.995, and the variation trend is that the I/O value drops sharply with smaller diameter and then appears a gentle decline, which is different from that on natural ventilation conditions.
Keywords:particle concentration, office, I/O ratio