Abstract:
Objective To investigate the sanitary condition and existing health risks of public places in Karamay, China, and to provide a basis and technical support for strengthening the sanitary management of local public places.
Methods According to National Plan for Monitoring Health Hazard Factors in Public Places in 2022, an investigation was conducted to observe the health management of 50 public places belonging to 7 categories in Karamay in 2022, and related samples were collected to analyze health hazard factors in environmental physical factors, indoor air, public articles, and facilities. Each indicator was evaluated according to the Hygienic Indicators and Limits for Public Places (GB 37488-2019) and the Indoor Air Quality Standard (GB/T 18883-2002).
Results Among the 50 public places, 16 (32.00%) had not carried out quantitative health surveillance classification by 2020. A total of 4160 samples were collected from various public health places, among which 3611 reached the standard, with a rate of reaching the standard of 86.80%. Gyms had the highest rate of reaching the standard of 89.35%, followed by hotels and barber shops/beauty salons, with a rate of reaching the standard of 88.98% and 87.90%, respectively, while swimming pools had the lowest rate of reaching the standard of 68.18%, and there was a significant difference in the rate of reaching the standard between the 7 types of places (χ2 = 51.11, P < 0.001). Among the physical factors, wind speed reached the standard in all places, followed by noise and temperature, with a rate of reaching the standard of 78.24% and 44.27%, respectively, and humidity had the lowest rate of reaching the standard of 11.07%. The indoor air quality of gyms and waiting rooms reached the standard, and CO and PM10 in the air of various types of places reached the standard. Benzene, toluene, and xylene in indoor air of hotels had a rate of reaching the standard of 93.90%, 92.68%, and 90.24%, respectively, and the total number of bacterial colonies in hotel indoor air had a rate of reaching the standard of 81.71%. Staphylococcus aureus and Escherichia coli in public articles and facilities in various types of places reached the standard. The pH value of towels had a rate of reaching the standard of 99.41%, and the total number of bacterial colonies had a rate of reaching the standard of 86.76%.
Conclusion The sanitary condition of public places in Karamay still needs to be improved, with a focus on the supervision and monitoring of the humidity and temperature of swimming pools, the total number of bacterial colonies and benzene series in the air of hotels, and the total number of bacterial colonies in public articles.