Dose-Response Analysis and Application of Low-Pressure Mercury Lamp Sterilization in Low-Temperature Environments
YUAN Qing
SHEN Diya
FU Huiqun
ZHOU Xuemei
LI Fusheng
HAN Qiuyi
ZHANG Shanduan
Abstract：A dose-response analysis was conducted on the sterilization performance of low-pressure mercury lamps in low-temperature environments.Escherichia coli,Staphylococcus aureus,and Bacillus subtilis spores were selected as representative strains.Within the temperature range of 20℃ to-20℃,the sterilization effect was explored by varying the ultraviolet dose.The experimental results show that low-pressure mercury lamps exhibit highly efficient disinfection capability at low temperatures,requiring lower doses to inactivate various bacterial strains.For example,at-20℃,Staphylococcus aureus achieved qualified sterilization(log reduction factor RF＞3)with only 10 mJ/cm2 after 30 min of treatment,whereas more than 20 mJ/cm2 was required at room temperature.Simulation-based optimization of ultraviolet lamp arrangement in refrigeration devices,followed by experimental verification,confirmed that the system meets the high-efficiency disinfection requirements under low-temperature conditions.
Keywords：low-pressure mercury lamplow temperaturesterilizationrefrigerated funeral display cabinet
Publication Date：2025-10-31
Online Publishing Date：2025-11-27(First online date of this platform, not the publication date of the document)
Pages：11( 10-20 )