Many governments around the world have enforced quarantine policies to control the spread of the new coronavirus (SARS-CoV-2). These policies have had positive and negative effects on the environment. For example, the concentrations of certain harmful pollutants have decreased in some countries. In contrast, the concentrations of other pollutants have increased. This research analyzes the effect of quarantine policies on air quality in Quito, Ecuador. Using a parametric approach, it was found that NO2 and PM2.5 concentrations have decreased significantly since the establishment of lockdown measures. However, O3 concentrations have increased considerably in 2020.

中文翻译：

---

COVID-19 大流行期间，厄瓜多尔的空气质量是否有所改善？参数分析


世界各地许多政府都实施了检疫政策，以控制新型冠状病毒（SARS-CoV-2）的传播。这些政策对环境产生了积极和消极的影响。例如，某些国家某些有害污染物的浓度有所下降。相比之下，其他污染物的浓度有所增加。本研究分析了厄瓜多尔基多检疫政策对空气质量的影响。采用参数方法发现，自采取封锁措施以来，NO2 和 PM2.5 浓度显着下降。然而，2020 年 O3 浓度大幅增加。