广九直通车客车微小气候和空气质量监测结果分析

Analysis on surveillance data of microclimate and air quality on Guangzhou-Kowloon through passenger train

目的了解广九直通车客车的微小气候和空气质量现状,为提高和改善其卫生状况提供依据。方法对2007-2011年,温度、相对湿度、风速、二氧化碳、一氧化碳、空气细菌总数和可吸入颗粒(PM10)等指标的监测数据进行统计分析。结果共检测99份样品,夏季温度达标率93%,冬季温度达标率22%,相对湿度达标率54%;其它指标达标率均为100%。结论广九直通车客车空气质量评价指标符合国家卫生标准,主要卫生问题是相对湿度和冬季温度偏高,其卫生调控措施应以降低车内湿度为主。冬季宜采取"降温除湿"的方法调整车内温度和相对湿度。

Objective To investigate the microclimate and air quality on Guangzhou - Kowloon through passenger train, and provide a basis for enhancing and improving the health status. Methods The surveillance data of tem- perature, relative humidity, wind velocity, carbon dioxide, carbon monoxide, bacterial count of air and particulate matter （ PM10 ） etc from 2007 to 2011 are statistically analyzed. Results A total of 99 samples are detected. 93% summer temperature meets the targets, and the rate is 22% in winter temperature samples. 54% relative hu- midity meets the targets and the other indexes all reached the standards. Conclusion The air quality evaluation indexes of Guangzhou - Kowloon through passenger train are in accordance with national health standards. The main health problems are the high relative humidity and winter temperature, and the main health control measures should be to reduce humidity of the vehicle. Cooling and dehumidifying should be adopted to adjust the temperature and relative humidity in the winter.