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Study finds COVID-19 lockdown in China brought only slight reduction in PM2.5 and ozone

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Large improvements of air quality in China during the lockdown have been widely reported, but new research shows that two pollutants harmful to human health—fine particulate matter (PM 2.5 ) and ozone—were only slightly reduced. and ozone were only slightly reduced or barely affected.

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York study: Less traffic in first UK lockdown reduced NO2 pollution but caused increase in surface ozone

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Less traffic on the roads during the first COVID-19 lockdown in the UK led to a reduction in air pollution but may have caused potentially damaging surface ozone levels to rise, according to a new study led by researchers at the University of York. The problem is being created by the change in chemistry between NO x and O 3. Drysdale, W.

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Study: ozone levels higher across China than in other countries tracking the air pollutant

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In China, people breathe ozone-laden air two to six times more often than people in the United States, Europe, Japan, or South Korea, according to a new international study published in Environmental Science & Technology Letters. 2017 for one ozone metric. The inset shows ozone trends in Beijing (red) and Los Angeles (blue).

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Studies find global COVID-19 lockdowns have significantly reduced PM2.5 and NO2 pollution, but ozone up

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Levels of two major air pollutants have been reduced significantly since lockdowns began in response to the COVID-19 pandemic, but a secondary pollutant—ground-level ozone—has increased in China, according to new research. has decreased by 35% in northern China. Grey areas indicate no valid data. Bauwens et al.

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China study connects ozone pollution to cardiovascular health

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Exposure to ozone, long associated with impaired lung function, is also connected to health changes that can cause cardiovascular disease such as heart attack, high blood pressure and stroke, according to a new study of Chinese adults. The findings associated ozone exposure with markers of platelet activation and increased blood pressure.

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Harvard/Nanjing study: China’s war on PM2.5 pollution is causing more severe ozone pollution

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concentrations in eastern China have fallen nearly 40%. pollution is falling, harmful ground-level ozone pollution is on the rise, especially in large cities. Ozone is the main ingredient in smog and has been studied since it began choking cities in the US in the early 1950s. Over the course of five years, PM 2.5 1812168116.

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Study explores mechanisms of effects of personal ozone exposure on blood pressure and vascular endothelial function

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A research team in China conducted a longitudinal panel study among 43 non-smoking college students in Shanghai to explore the effects of personal ozone exposure on blood pressure (BP), vascular endothelial function, and the potential molecular mechanisms. —Xia et al. doi: 10.1021/acs.est.8b03044. 8b03044.

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