Abstract
In this work, the objectives were to provide a scientific basis for environmental governance and to ensure staff health by real-time monitoring of indoor air quality of the pathology department. Using eagle eye environment monitor to make a real-time dynamic monitoring of the air quality of the pathological technical room for 30 days, the paper records the monitoring data of PM 2.5, PM 10, formaldehyde, CO2, total volatile organic compounds (TVOC) every day at Beijing time 3 a.m, 10 am, 1 pm, 4 pm, and 10 pm, and makes a summarization and analysis. The average value of CO2 concentration of the 5 time points is (0.05 ± 0.01)%, and each time point concentration are different (P 0.05); the average TVOC concentration of the 5 time points is (0.08 + 0.31) mg/m3. They are all different between the concentration at each time point (P 2 and NO are not checked out. Through the real-time online monitoring of the pathology room, we find that the formaldehyde concentration of different time periods is far more than the safety value standard, and the concentration of formaldehyde, CO2, PM 2.5, PM 10 and total volatile organic compound (TVOC) is different at different time periods, and the concentrations at working time are higher than the non-working time. We must take effective measures to control the concentration of harmful gases in order to ensure the staff’s health.
Highlights
Air pollutants are complex mixtures which are caused by many natural and man-made reasons, including particulate matter (PM), ozone, carbon monoxide, sulfur oxides, nitrogen oxides, methane and other gases, volatile organic compounds and metals [1]
The concentration are different at each time point, which is proved to be with statistical significance by variance analysis (F = 17.10, P < 0.05); among which the concentration at 10 am and 4 pm are significantly higher than that of other time point, the difference is with statistical significance (P < 0.05); the concentration at 1pm is different with any other time points, and the difference is with statistical significance (P < 0.05)
The average concentration of PM diameter less than 10 μm (PM 10) at 3 am, 10 am, 1 pm, 4 pm, 10 pm (Beijing time) was (40.72 ± 41.76) μg/m3, the formaldehyde concentrations at each time point are different, which is proved to be with statistical significance by variance analysis (F = 19.98, P < 0.05); among which the concentration at 10am and 4 pm are significantly higher than that of other time points, the difference is with statistical significance (P < 0.05), the concentration at 1pm is different with any other time point, and with statistical significance (P < 0.05)
Summary
Air pollutants are complex mixtures which are caused by many natural and man-made reasons, including particulate matter (PM), ozone, carbon monoxide, sulfur oxides, nitrogen oxides, methane and other gases, volatile organic compounds (for example, benzene, toluene and xylene) and metals (for example, lead, manganese, vanadium, iron) [1]. It has been proved that particulate matter, nitrogen dioxide (NO2), ozone (O3) and carbon monoxide (CO), and other gases in the environment can increase the morbidity and mortality rate of cardiovascular and respiratory (mainly lung cancer and chronic obstructive pulmonary disease) [2]. Indoor air pollutants concentration measurement includes PM diameter less than 10 μm (PM 10), formaldehyde, carbon dioxide (CO2), carbon monoxide (CO), nitrogen dioxide (NO2), total volatile organic compounds (TVOC), benzene, toluene, ethyl benzene, xylene, styrene, bacteria and fungi of aerosol [3].
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