Williams John, Petrik Leslie, Wichmann Janine
Environmental and Nano Sciences Group, Department of Chemical Sciences, University of the Western Cape, Cape Town, South Africa.
School of Health Systems and Public Health, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa.
Air Qual Atmos Health. 2021;14(3):431-442. doi: 10.1007/s11869-020-00947-y. Epub 2020 Oct 7.
PM in the indoor and outdoor environment has been linked in epidemiology studies to the symptoms, hospital admissions and development of numerous health outcomes including death. The study was conducted during April 2017 and April 2018. PM samples were collected over 24 h and every third day. The mean PM level was 13.4 μg m (range: 1.17-39.1 μg m). PM levels exceeded the daily World Health Organization air quality guideline (25 μg m) on 14 occasions. The mean soot level was 1.38 m × 10 (range: 0 to 5.38 m × 10). Cl, NO , SO , Al, Ca, Fe, Mg, Na and Zn were detected in the PM samples. The geographical origin of air masses that passed Cape Town was estimated using the Hybrid Single Particle Lagrangian Integrated Trajectory software. Four air masses were identified in the cluster analysis: Atlantic-Ocean-WSW, Atlantic-Ocean-SW, Atlantic-Ocean-SSW and Indian-Ocean. The population of Cape Town may experience various health outcomes from the outdoor exposure to PM and the chemical composition of PM.
在流行病学研究中，室内和室外环境中的细颗粒物（PM）与包括死亡在内的多种健康结果的症状、住院情况及发展相关联。该研究于2017年4月至2018年4月期间进行。每三天收集一次24小时的PM样本。PM的平均水平为13.4微克/立方米（范围：1.17 - 39.1微克/立方米）。PM水平有14次超过了世界卫生组织的每日空气质量指南（25微克/立方米）。烟尘的平均水平为1.38×10⁻⁶（范围：0至5.38×10⁻⁶）。在PM样本中检测到了氯、一氧化氮、二氧化硫、铝、钙、铁、镁、钠和锌。使用混合单粒子拉格朗日综合轨迹软件估计了经过开普敦的气团的地理来源。在聚类分析中识别出了四个气团：大西洋 - 西南偏西、大西洋 - 西南、大西洋 - 南西南和印度洋。开普敦的居民可能会因室外接触PM及其化学成分而经历各种健康问题。
