Microbial contamination of interior elevator buttons in a university
10.16835/j.cnki.1000-9817.2022.10.033
- VernacularTitle:某高校公用电梯内部按钮微生物污染状况
- Author:
HUANG Jinjin, ZHANG Lu, SONG Lei, ZHANG Xue
1
Author Information
1. School of Public Health, Guizhou Medical University, Guiyang (550025) , China
- Publication Type:期刊文章
- Keywords:
Elevators and escalators;
Bacteria;
Environmental pollution;
Public health
- From:
Chinese Journal of School Health
2022;43(10):1583-1585
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the microbial contamination on the interior elevator buttons in a university, and to provide data reference for elevator disinfection and sanitation management.
Methods:The interior elevator buttons in a university were sampled for 4 consecutive quarters (140 elevators in total). The total number of bacteria, coliform bacteria and Staphylococcus aureus on the surface of elevator buttons are tested by referring to "Sanitary Inspection Methods for Public Places Part IV: Microorganisms for Public Utensils" (GB/T 18204.4-2013). The results were evaluated with reference to the hygienic requirements for public utensils and utensils in "Sanitation Indicators and Limit Requirements for Public Places"(GB 37488-2019).
Results:The bacteria contamination rate of the interior buttons of public elevators in the university was 98.57%, and 19.29% of which exceeded the maximum level for public appliances (300 CFU/25 cm 2). The total qualified rate of total bacteria, coliform bacteria and Staphylococcus aureus were 80.71%, 99.29% and 95.71% respectively. The qualified rate of Staphylococcus aureus varied by season( χ 2=12.11, P < 0.01), and the qualified rate of Staphylococcus aureus was the lowest in summer(82.86%). The pass rates of the three elevator sanitation indicators in the administrative building, teaching building and comprehensive building did not vary by different building functions (total number of bacteria: χ 2=3.53,coliform: χ 2=2.37, Staphylococcus aureus: χ 2=2.08, P >0.05).
Conclusion:Bacterial contamination was found in most of the interior buttons of public elevators in university, with vast number of bacteria and pathogenic bacteria. Relevant departments need to strengthen the disinfection frequency and effect monitoring of the interior buttons of public elevators in schools. All the staffs and students in the university need to increase their awareness of hand hygiene after using the elevator.
