Abstract
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 Bei**g 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.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (No. 52091544).
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Conflict of Interests The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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Highlights
• CBD consumption used during the Dynamic COVID Zero Strategy was quantified.
• An ALICE model to quantify weekly CBD consumption was proposed.
• The total CBD consumption could be reduced by 1.2% with a stricter strategy.
• A stricter and precise control strategy could reduce 16.9% and 37.7% CBD consumption within the close-off and lockdown area.
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Wang, X., Su, M., Wang, C. et al. Dynamic COVID Zero Strategy triggered a significant increase of chlorine-based disinfectant consumption in Bei**g. Front. Environ. Sci. Eng. 18, 97 (2024). https://doi.org/10.1007/s11783-024-1857-7
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DOI: https://doi.org/10.1007/s11783-024-1857-7