Dynamic COVID Zero Strategy triggered a significant increase of chlorine-based disinfectant  

作　　者：Xuhao Wang Mai Su Chunyan Wang Yi Liu 

机构地区：[1]School of Environment,Tsinghua University,Beijing 100084,China

出　　处：《Frontiers of Environmental Science & Engineering》2024年第8期73-80,共8页环境科学与工程前沿（英文）

基　　金：supported by the National Natural Science Foundation of China(No.52091544).

摘　　要：Chlorine-based disinfectants(CBDs)have been widely used to prevent and control the spread of the COVID-19,which may lead to the formation of carcinogenic hazards.In China,strict disinfection strategies by local governments/communities or volunteering by residents have been implemented to meet the Dynamic COVID Zero(DCZ)Strategy.However,the amount of CBDs used has not been estimated.The author proposed an urban-scale disinfectant consumption estimation(ALICE)model to quantify weekly CBD consumption.The results show that the CBD consumption for the urban region of Beijing during the DCZ strategy was 3704.0 t(0.43 kg/(cap-yr)),equivalent to a monthly increase of 15 g/cap(70.5%)in CBD consumption compared with that in pre-pandemic.According to the scenario analysis,a stricter strategy with a shorter response time toward new cases will decrease the total CBD consumption by 1.2% compared with the baseline estimation.A more precise prevention strategy with a smaller delineation of risk area and a less stringent strategy with a longer response time will lower the total CBD consumption by 0.42% and 0.35%,respectively.Specifically,the more precise prevention strategy will reduce CBD consumption of close off and lockdown area(COLD area)by 16.9%,and the stricter strategy will reduce this consumption by 37.7%.This study highlights the impact of pandemic prevention and control strategies on chlorine-based disinfectant consumption and some implications for future environmental pollution and risk assessments.

关 键 词：COVID-19 Dynamic COVID Zero Strategy Disinfectants consumption Bottom-up approach Scenario analysis 

分 类 号：R187[医药卫生—流行病学] X799.5[医药卫生—公共卫生与预防医学]