The concentration of heavy metal arsenic in Yunlin PM2.5 purple explosion day exceeded the standard.

A few days ago, the air quality in Yunlin area was poor, and the concentration of fine suspended particulate matter (PM2.5) reached "purple explosion". The National Institutes of Health found that at that time, not only the mass concentration of PM2.5 increased by 1.5 times, but also the average concentration of heavy metal arsenic in PM2.5 exceeded the EU standard.

The national institutes of health found that the concentration of PM2.5 in Yunlin exceeded the standard on purple explosion day. The occurrence of poor air quality in Taiwan Province Province is usually caused by poor atmospheric diffusion and the continuous accumulation of pollutants. In summer, due to the strong southwest airflow, high atmospheric mixing layer, easy air diffusion and low PM2.5 concentration; However, in autumn and winter, due to the inversion layer phenomenon and poor atmospheric diffusion conditions, the concentration of PM2.5 tends to increase.

The arsenic concentration in Yunlin air quality adverse events exceeded the recommended value of the European Union.

In addition, the northeast monsoon prevails in Taiwan Province Province in winter, and the airflow often carries the dust or smog in the northeast of Chinese mainland south into Taiwan Province Province, which is also easy to cause poor air quality, especially in the central and southern regions. The concentration of PM2.5 can reach the highest (≧7 1? G/m3)-commonly known as "purple explosion". Therefore, the central and southern regions should be more vigilant in autumn and winter.

The research team assisted by researcher Chen from the Institute of Environmental Medicine of the National Institutes of Health found that the mass concentrations of PM 10 and PM2.5 in Yunlin area were about 2 times and 1.5 times higher than those in the days before the air quality adverse events, respectively, and the heavy metals arsenic and lead in PM2.5 were about 1.2 to 1.3 times higher, respectively.

Wear N95 or surgical mask for self-protection when going out.

According to the data of the World Health Organization, about 3% and 5% of heart and lung diseases and lung cancer in the world can be attributed to the exposure of PM2.5, which causes 3,654,380+deaths worldwide every year. PM2.5 has a greater impact on susceptible people such as the elderly, children and patients with heart and lung diseases. The research team called on the * * * department to immediately issue hazard warnings and protection suggestions in the face of bad air quality incidents, such as people should avoid going out and wearing N95 or surgical masks.