埃努古市选定的 3 个公交车站微环境中的污染物

Ehiemobi Michael Chijioke
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引用次数: 0

摘要

公交车站微环境中的怠速公交车可能会污染环境空气,对长时间候车的乘客健康造成影响。本研究旨在发现尼日利亚东南部埃努古市选定的三个公交车站微环境中空气污染物的严重程度,从而确定空气质量指数。研究结合气象参数(风速、温度和相对湿度),对埃努古市选定的三个公交车站和一个对照站的空驶公交车上的环境颗粒物(PM10 和 PM2.5)和气体污染物(如二氧化硫、二氧化氮和一氧化碳)进行了实时监测。研究时间跨度为 2016 年 9 月至 2018 年 8 月,涵盖旱季和雨季。收集数据时使用了手持式 Aeroqual Series - 200 气体监测仪/传感器、微粒激光测量仪和环境气象风速计。结果显示,污染物的日最高平均浓度如下:PM10=228µg/m3 - Young Shall Grow;PM2.5=99.5µg/m3 - Young-Shall-Grow ;SO2=0.81ppm - Ifesinachi ;NO2=0.068ppm - Young-Shall-Grow ;CO=7.376ppm - ABC,持续保持高于对照站的浓度。空气质量指数由空气质量指数计算器计算得出。空气质量指数(AQI)结果显示,选定的 3 个公交车站微观环境中存在严重的健康问题。这意味着,如果乘客在公交车站聚集空转的公交车,就会面临很大的风险。这项研究可以帮助相关部门对交通微环境中的污染物制定严格的环境空气质量目标。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Pollutants In the Selected 3 – Bus Station Microenvironments in Enugu Metropolis
Idling buses in bus station micro-environments potentially pollute ambient air with health implications for commuters with long waiting times. This study aimed at finding the severity of air pollutants in selected three bus station microenvironments in Enugu metropolis, South Eastern Nigeria with the objective to determine the air quality index. Real time measurements of ambient particulates (PM10 and PM2.5) and gaseous pollutants such as SO2, NO2 and CO were monitored, in conjunction with meteorological parameters (wind speed, temperature and relative humidity) on idling buses in selected three bus stations and a control station in Enugu Metropolis. The study spanned through September 2016 to August 2018, covering dry and wet seasons. Hand-held Aeroqual Series - 200 gas monitor/sensors, particulates laser meter and ambient weather anemometer were used to collect data. Results indicated that the daily highest mean concentrations of pollutants were as follows: PM10=228µg/m3 – Young Shall Grow; PM2.5=99.5µg/m3 – Young-Shall-Grow; SO2=0.81ppm – Ifesinachi; NO2= 0.068ppm – Young-Shall-Grow; CO= 7.376ppm – ABC, consistently maintained higher concentrations than those at the control station. AQI was calculated with AQI calculator. The air quality index (AQI) results showed a severe health issue in the selected 3-bus station micro environments. This implies that commuters are highly at risk if they cluster idling buses at bus stations. This study can assist the relevant authorities to set strict ambient air quality objectives for pollutants in transport micro environments.
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