Spatial-temporal distribution and potential risk of pesticides in ambient air in the North China Plain

Mingyu Zhao, Junxue Wu*, Daniel M Figueiredo, Yun Zhang, Ziyu Zou, Yuxuan Cao, Jingjing Li, Xue Chen, Shuping Shi, Zhiyun Wei, Jindong Li, Hongyan Zhang, Ercheng Zhao, Violette Geissen, Coen J Ritsema, Xuejun Liu, Jiajun Han*, Kai Wang*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The intensive use of pesticides in the North China Plain (NCP) has resulted in widespread contamination of pesticides in the local atmosphere, posing risks to air quality and human health. However, the occurrence and distribution of atmospheric pesticides in the NCP as well as their risk assessment have not been well investigated. In this study, 300 monthly samples were collected using passive air samplers with polyurethane foam at ten rural sites with different crop systems in Quzhou county, the NCP, from June 2021 to May 2022. The pesticides were quantified using mass-spectrometric techniques. Our results revealed that chlorpyrifos, carbendazim, and atrazine were the most frequently found pesticides in the air samples, with detection frequencies of ≥ 87 % across the samples. The average concentrations of atmospheric pesticides during spring (7.47 pg m-3) and summer (16.05 pg m-3) were significantly higher than those during autumn (2.04 pg m-3) and winter (1.71 pg m-3), attributable to the intensified application of pesticides during the warmer seasons. Additionally, cash crop sites exhibited higher concentrations (10.26 pg m-3) of atmospheric pesticides compared to grain crop (5.59 pg m-3) and greenhouse sites (3.81 pg m-3), primarily due to more frequent pesticides spraying events in cash crop fields. These findings indicate a distinct spatial-temporal distribution pattern of atmospheric pesticides influenced by both seasons and crop systems. Furthermore, the model-based inhalation risk assessment indicates that inhalation exposure to atmospheric pesticides is unlikely to pose a significant public concern.

Original languageEnglish
Article number108342
Number of pages10
JournalEnvironment International
Volume182
Early online date23 Nov 2023
DOIs
Publication statusPublished - Dec 2023

Bibliographical note

Publisher Copyright:
© 2023 The Author(s)

Funding

The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (No. 42207125 and No. 42107002); The State Key Laboratory of Loess and Quaternary Geology is affiliated with the Institute of Earth Environment in the Chinese Academy of Sciences (SKLLQG214); Professor station of China Agricultural University at Xinzhou Center for Disease Control and Prevention; the High-level Team Project of China Agricultural University; Yunnan Provincial Major Science and Technology Special Project (202102AE090030); the China Scholarship Council (No. 201913043).

FundersFunder number
China Agricultural University at Xinzhou Center for Disease Control and Prevention
Yunnan Provincial Major Science and Technology Special Project202102AE090030
National Natural Science Foundation of China42107002, 42207125
China Agricultural University
Chinese Academy of SciencesSKLLQG214
China Scholarship Council201913043

    Keywords

    • Atmospheric pesticides
    • Crop systems
    • Health risk assessment
    • North China Plain
    • Spatial-temporal distribution

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