Levels and sources of hourly PM2.5-related elements during the control period of the COVID-19 pandemic at a rural site between Beijing and Tianjin

Cui, Yang; Ji, Dongsheng; Maenhaut, Willy; Gao, Wenkang; Zhang, Renjian; Wang, Yuesi

doi:10.1016/j.scitotenv.2020.140840

Cited by 63 publications

(45 citation statements)

References 35 publications

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“…As such, investigating the changes in the chemical components of aerosols that occurred during this special period can deepen our understanding of the impact of anthropogenic sources on air pollutants in urban areas. To date, numerous studies have been carried out on the impact of the lockdown on air quality and on source apportionment of aerosols in the NCP and in Hubei Province ( Cui et al., 2020 ; Dai et al., 2020 ; Sun et al., 2020 ; Zheng et al., 2020 ); however, few studies have been conducted on the YRD. Given that emission sources, economic structures and meteorological patterns differ in different regions of China, the impact mechanisms of the lockdown policy on the distributions and sources of air pollutants were distinct in each region.…”

Section: Introductionmentioning

confidence: 99%

Air pollutant variations in Suzhou during the 2019 novel coronavirus (COVID-19) lockdown of 2020: High time-resolution measurements of aerosol chemical compositions and source apportionment

Wang

Miao

Shen

et al. 2021

Environmental Pollution

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Section: Introductionmentioning

confidence: 99%

Air pollutant variations in Suzhou during the 2019 novel coronavirus (COVID-19) lockdown of 2020: High time-resolution measurements of aerosol chemical compositions and source apportionment

Wang

Miao

Shen

et al. 2021

Environmental Pollution

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“…Many studies have reported the variations in air pollutants due to the COVID‐19 pandemic. They revealed the variations of SO 2 , NO x , and PM 2.5 concentration from a regional perspective based on data from satellites (Bauwens et al, 2020; Zhang et al, 2020), ground‐based national environmental monitoring centers (Cui et al, 2020; Huang et al, 2020; Yuan et al, 2021), or model simulations (Huang et al, 2020; Wang et al, 2020). However, this is the first study that focuses on the BC variations from ground measurements during the COVID‐19 lockdown at the megacity level.…”

Section: Introductionmentioning

confidence: 99%

Variation in Concentration and Sources of Black Carbon in a Megacity of China During the COVID‐19 Pandemic

Zhang

Sun

et al. 2020

Geophysical Research Letters

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Black carbon (BC) not only warms the atmosphere but also affects human health. The nationwide lockdown due to the Coronavirus Disease 2019 (COVID-19) pandemic led to a major reduction in human activity during the past 30 years. Here, the concentration of BC in the urban, urban-industry, suburb, and rural areas of a megacity Hangzhou were monitored using a multiwavelength Aethalometer to estimate the impact of the COVID-19 lockdown on BC emissions. The citywide BC decreased by 44% from 2.30 to 1.29 μg/m 3 following the COVID-19 lockdown period. The source apportionment based on the Aethalometer model shows that vehicle emission reduction responded to BC decline in the urban area and biomass burning in rural areas around the megacity had a regional contribution of BC. We highlight that the emission controls of vehicles in urban areas and biomass burning in rural areas should be more efficient in reducing BC in the megacity Hangzhou. As the first country reporting and fighting Coronavirus Disease 2019 (COVID-19), China has implemented a series of effective measures to prevent the spread of COVID-19, including stay-at-home orders, travel bans, shutting down nonessential commercial activities, and a national lockdown (Tian et al., 2020). These nationwide restrictions have led to the lowest human activity in modern China in the past 30 years, resulting in the

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“…However, Chen et al [31] state that the reduction in pollutant level (such as reduced PM 2.5 concentration) cannot be solely explained by alterations in primary emissions; instead, decreasing concentrations of nitrate (60%), ammonium (45%) and primary aerosols can also play an important role. In another study, the elements barium, copper, iron, potassium and zinc were found to be dominating PM 2.5 -related elements [48]. The presence of these elements, even during the lockdown period at a rural site between Beijing and Tianjin was attributed to the aging processes of elements after the emission of fireworks in the Chinese New Year Eve night and vehicular emission [48].…”

Section: Particulate Matter and Aerosolmentioning

confidence: 96%

COVID-19 Pandemic: An Unprecedented Blessing for Nature

Kalita¹,

Talukdar²

2021

The Impact of the COVID-19 Pandemic on Green Societies

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Nature has the remarkable ability to replenish and self-purify overtime; however, imprudent human activities have slowed down the ecological reconditioning functions. Degradation of air, water and soil, destruction of natural habitat, and compounded loss of floral and faunal diversity has been a major cause of worry among environmentalist. Measures adopted to address these issues have not yielded result on expected lines. But the year 2020 turned out to be a blessing in disguise for the environment. The COVID-19 quarantine lockdown has restricted people to home and brought human activities to a halt; thus, giving an edge to the natural resources to replenish themselves or the freedom of movement to animals in human-dominated lands. Scientists from diverse fields are trying to explore and validate the lockdown impact on ecology through proper scientific methods and data interpretation. This chapter mainly reviews the various studies carried out globally to assess the effects of the lockdown on the ecology and natural resources. An attempt has been made for a detailed and retrospective discussion on the effects of lockdown on the environment and the measures to be adopted for sustenance of ameliorated state of ecology along with economy revival. Most of the research articles affirmed the positive impact of the quarantine lockdown on ecology. The Earth's ability to recover its health in such a small period leaves us with a question of why humans, the so-called a superior intelligent organism, cannot effectively manage the only habitat in the universe?

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Levels and sources of hourly PM2.5-related elements during the control period of the COVID-19 pandemic at a rural site between Beijing and Tianjin

Cited by 63 publications

References 35 publications

Air pollutant variations in Suzhou during the 2019 novel coronavirus (COVID-19) lockdown of 2020: High time-resolution measurements of aerosol chemical compositions and source apportionment

Air pollutant variations in Suzhou during the 2019 novel coronavirus (COVID-19) lockdown of 2020: High time-resolution measurements of aerosol chemical compositions and source apportionment

Variation in Concentration and Sources of Black Carbon in a Megacity of China During the COVID‐19 Pandemic

COVID-19 Pandemic: An Unprecedented Blessing for Nature

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