Monitoring results of health hazard factors in public places in Guangzhou from 2021 to 2022
Objective To monitor health hazard factors in public places in Guangzhou,identify the main health risks present,and provide an important theoretical basis for ensuring the population's health.Methods Health hazard factor monitoring was conducted from 2021 to 2022 in 8 types of public places in Guangzhou,including guesthouses(hotels),shopping malls(supermarkets),barbershops,beauty salons,waiting rooms,bathing places,swimming pools(gymnasiums),and gyms.The results were evaluated according to the requirements of"Hygienic indicators and limits for public places"(GB 37488-2019).Results A total of 7 125 samples of indoor air,public supplies and appliances,and water quality samples in 8 types of public places in Guangzhou were collected from 2021 to 2022,with an overall qualified rate of 93.3%.The waiting rooms had the lowest qualified rate at 81.5%.There was a statistically significant difference in the qualified rate of samples in various public places(P<0.001),The qualified rate of indoor air was 89.0%,the lowest qualified rate of swimming pools(gymnasiums)is 76.4%,respectively.The differences in the qualified rate of indoor air across various public places were statistically significant(P<0.001).The unqualified indexes were mainly humidity,noise,total number of colonies,and PM2.5.The qualified rate of noise in shopping malls(supermarkets)was the lowest,which was 0.The qualified humidity rates,PM2.5,and total number of colonies in the waiting room were the lowest,11.1%,50.0%,and 88.9%,respectively.The qualified rate of supplies and appliances(public facilities)was 97.4%,with a statistically significant difference in the qualified rate of various public places(P<0.001).The unqualified indicators mainly included the PH value of towels and the total number of colonies of some supplies(public facilities).Among them,the total qualified rate of the total number of colonies at the checkout counter in shopping malls(supermarkets)was the lowest,which was 69.4%.The qualified rate of water quality in swimming pools(gymnasium)was 86.2%.The unqualified indexes mainly included pH value,redox potential,disinfectant residue and free residual chlorine in foot soaking pool water.Among them,the qualified rate of redox potential in swimming pool water was the lowest,which was 50.0%.Conclusions The overall sanitary conditions of public places in Guangzhou are relatively good.However,the problems of low qualified rate of indoor air in waiting rooms,bathing places,and swimming pools(gymnasiums)should not be ignored.It is recommended that relevant departments strengthen health supervision and take effective control measures.
Public placesair qualitysupplies and applianceswater qualitytotal number of coloniesfree residual chlorine
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