博物馆恒温恒湿展厅空气细菌检测及人员暴露量分析

Air Bacterial Detection and Personnel Exposure Analysis in the with Constant Temperature and Humidity Museum Exhibition Hall

目的检测博物馆展厅内的细菌浓度,确定影响细菌滋生的主要因素并预测参观人员的暴露量.避免博物馆参观人员受空气中细菌污染.方法通过采集、培养和计数对两间恒温恒湿博物馆展厅内的空气进行细菌检测,运用Crystal Ball软件对两个展厅中参观人员暴露于细菌中的暴露量进行蒙特卡罗模拟预测.结果展厅A、展厅B空气中细菌的平均浓度分别为558.52 cfu/m^3和567.7 cfu/m^3;蒙特卡洛模拟得出在相同的参观时间内,青、中年男性平均暴露量为345.22 cfu,青、中年女性平均暴露量为260.44 cfu,未成年人平均暴露量为225.24 cfu,呈现依次递减状态.两间恒温恒湿博物馆展厅空气中细菌菌落数符合《室内空气质量标准》(GB/T18883—2002)要求.结论适宜的温度和湿度有助于细菌的滋生繁殖,湿度对细菌的浓度影响更大;人员暴露量与呼吸速率强度之间呈现典型的正相关性,通过计算人员暴露量可以有效评估博物馆室内空气品质.

In order to prevent museum visitors from being polluted by bacteria in the air and identify the main factors affecting bacterial growth,the concentration of bacteria in the museum exhibition hall is tested and the exposure of visitors is predicted.The bacteria in the air in the two exhibition halls with constant temperature and humidity were collected,cultured and counted.Monte Carlo simulation was used to predict the exposure of the visitors to the bacteria in the two exhibition halls by crystal Ball softwave.The test results show that the average concentration of bacteria in the air in the two exhibition halls A and B is 558.52 cfu/m^3 and 567.7 cfu/m^3 respectively;Monte Carlo simulation shows that during the same visit time the average exposure of male is 345.22 cfu,female was 260.44 cfu,and the minors was 225.24 cfu,showing a decreasing state.The number of bacterial colonies in the air in the two exhibition halls with constant temperature and humidity meets the requirements of the Indoor Air Quality Standard(GB/T18883-2002).This indicates that the appropriate temperature and humidity contribute to the growth of bacteria,and the humidity has a greater impact on the concentration of bacteria.There are positive correlation between personnel exposure and respiratory rate intensity and the calculation of personnel exposure can effectively evaluate the indoor air quality of the museum.