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Incorporate a laser scattering PM2.5 sensorto measure and detect the level of fineparticulate matter(PM2.5)in the air

Data collection In this study, we applied the WenJuanXing electronic questionnaire to collect data

It also contains acrolein, which is harmful to the lungs and can cause asthma and lung cancer

Cd showed a strong positive correlation with Pb (r = 0.965), while it also exhibited a strong negative correlation with Cr (r = 0.287)

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e-cigarette (short for electronic cigarette) Battery-powered device that disperse nicotine and other chemicals as tiny airborne particles that users can inhale