Air quality status during 2020Malaysia Movement Control Order (MCO) due to 2019 novel coronavirus (2019-nCoV) pandemic
Air quality status during 2020Malaysia Movement Control Order (MCO) due to 2019 novel coronavirus (2019-nCoV) pandemic
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DOI：
10.1016/j.scitotenv.2020.139022
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发表时间：
2020-08-10
影响因子：
9.8
通讯作者：
Ramly, Zamzam Tuah Ahmad
中科院分区：
文献类型：
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作者：
Abdullah, Samsuri;Abu Mansor, Amalina;Ramly, Zamzam Tuah Ahmad
一种被证实由2019年新型冠状病毒（2019- ncov）感染的呼吸道疾病暴发，正式命名为2019冠状病毒病（COVID-19），首次在中国武汉发现，并在中国其他地区以及包括马来西亚在内的世界其他国家迅速蔓延。马来西亚的第一例病例于2020年1月25日被发现，自2020年3月以来病例数继续上升。因此，马来西亚实施了2020年行动控制令（MCO），旨在隔离新冠肺炎疫情的源头。因此，道路上的机动车数量减少，工业运营暂停，从而减少了大气中有害空气污染物的排放。我们从马来西亚环境部获得空气污染物指数（API）数据，在气象观测之前和期间每小时一次，目的是追踪68个空气质量监测站的细颗粒物（PM2.5）的变化。结果发现，在MCO期间，PM2.5浓度下降幅度高达58.4%。几个红色区域（41例确诊病例）的PM2.5浓度变化也下降了28.3%。减少并不仅仅取决于MCO，因此研究人员建议进一步研究，考虑未来需要坚持的影响因素。(c) 2020 Elsevier B.V.版权所有
An outbreak of respiratory illness which is proven to be infected by a 2019 novel coronavirus (2019-nCoV) officially named as Coronavirus Disease 2019 (COVID-19) was first detected in Wuhan, China and has spread rapidly in other parts of China as well as other countries around the world, including Malaysia. The first case in Malaysia was identified on 25 January 2020 and the number of cases continue to rise since March 2020. Therefore, 2020 Malaysia Movement Control Order (MCO) was implemented with the aim to isolate the source of the COVID-19 outbreak. As a result, there were fewer number of motor vehicles on the road and the operation of industries was suspended, ergo reducing emissions of hazardous air pollutants in the atmosphere. We had acquired the Air Pollutant Index (API) data fromthe Department of Environment Malaysia on hourly basis before and during the MCO with the aim to track the changes of fine particulate matter (PM2.5) at 68 air quality monitoring stations. It was found that the PM2.5 concentrations showed a high reduction of up to 58.4% during the MCO. Several red zone areas (>41 confirmed COVID-19 cases) had also reduced of up to 28.3% in the PM2.5 concentrations variation. The reduction did not solely depend on MCO, thus the researchers suggest a further study considering the influencing factors that need to be adhered to in the future. (c) 2020 Elsevier B.V. All rights reserved.