中国海洋大学学报（自然科学版）2025，Vol.55Issue(5)：10-19,10.DOI:10.16441/j.cnki.hdxb.20240146
紫外消毒对大气颗粒物中细菌和抗生素抗性基因的影响研究
Study on the Impact of Ultraviolet Disinfection on Bacteria and Antibiotic Resistance Genes in Atmospheric Particles
摘要
Abstract
Particles serve as crucial carriers for the dissemination of antibiotic resistance genes(ARGs)and their host bacteria in the air,facilitating long-distance transport and potentially exacerbating regional or even global bacterial resistance pollution.Ultraviolet(UV)disinfection is an economical and convenient means of sterilization widely employed in environmental air disinfection,yet its efficacy in removing ARGs from atmospheric particles remains poorly understood.This study investigates the impact of UV disinfection on bacteria and ARGs in atmospheric particles through a series of simulated experiments.The results indicate that UV disinfection effectively reduces the levels of bacteria and ARGs in atmos-pheric particles,thereby lowering the potential risk of ARGs transfer.There are significant differences in the removal rates of various types of ARGs by UV treatment(p＜0.01),and UV disinfection alters the composition of ARGs in atmospheric particles.At a UV dosage of 120 mJ/cm2,the removal rates for cultivable bacteria,16S rRNA,total ARGs,and mobile genetic elements(MGEs)exceed 99％,91.6％,65.4％,and 80％respectively.The efficiency of bacteria removal by UV disinfection far sur-passes that of ARGs,resulting in a further enrichment of ARGs post-disinfection,with a relative abun-dance increase of 39.8％,which could lead to an increased proportion of resistant bacteria in environ-mental air.关键词
大气颗粒物/抗生素抗性基因/细菌/紫外消毒Key words
atmospheric particulate matter/antibiotic resistance genes/bacteria/ultraviolet disinfec-tion分类
资源环境引用本文复制引用
程妍钰,贾世杰,石凤,高会旺..紫外消毒对大气颗粒物中细菌和抗生素抗性基因的影响研究[J].中国海洋大学学报（自然科学版）,2025,55(5):10-19,10.基金项目
国家自然科学基金项目(U1906215)资助Supported by the National Natural Science Foundation of China(U1906215) （U1906215）
