Xu, Ruibin;
Shen, Huizhong;
Wang, Peng;
Wang, Tao;
Chen, Yilin;
Guo, Peng;
Mai, Zelin;
... Tao, Shu; + view all
(2025)
E-Commerce Growth Reduces Primary PM2.5 Emissions but Increases Secondary PM2.5 Precursors in China.
Environmental Science & Technology
10.1021/acs.est.5c04903.
(In press).
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Abstract
The rapid shift from traditional in-store to online shopping has raised critical questions about its environmental trade-offs, particularly regarding air pollution─a key contributor to public health risks and climate change. Despite growing concerns, incomplete assessments have hindered the development of effective emission mitigation strategies for the retail sector. In this study, we compiled a comprehensive air pollutant emission inventory for shopping activities in China from 1990 to 2023, comparing in-store and online shopping methods. Our analysis reveals that online shopping reduces PM2.5 emissions from the retail sector by 19% (0.013 g item-1 vs 0.031 g item-1), primarily due to the greater efficiency of courier deliveries compared to consumer travel to stores. However, emissions of secondary PM2.5 precursors (NOx, SO2, NMVOCs) increase substantially─by 49, 270, and 30%, respectively─driven by air freight use and overpackaging. Targeted strategies, such as shifting from consumer vehicles to walk and cycling, replacing air freight with high-speed railway freight, and adopting reusable packaging, could mitigate these impacts. Implementing these measures is essential for advancing sustainable retail practices amid the growth of E-commerce.
| Type: | Article |
|---|---|
| Title: | E-Commerce Growth Reduces Primary PM2.5 Emissions but Increases Secondary PM2.5 Precursors in China |
| Location: | United States |
| DOI: | 10.1021/acs.est.5c04903 |
| Publisher version: | https://doi.org/10.1021/acs.est.5c04903 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | air pollutants, emission reductions, primary PM2.5, retail sector, secondary PM2.5 precursors |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10215682 |
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