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A Pilot Nationwide Survey on the Concentrations of Neonicotinoids and Their Metabolites in Indoor Dust from China: Application for Human Exposure

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Abstract

The present study assessed the residue levels of six parent neonicotinoids (p-NEOs) and four metabolites (m-NEOs) in indoor dust collected from 12 cities of China. Acetamiprid (ACE) and imidacloprid (IMI) were the predominated p-NEOs (detection rates: 98%) with the median values at 4.54 and 7.48 ng/g dry weight (dw), respectively. N-demethyl-acetamiprid (N-dm-ACE) was the most important m-NEO with the median value at 0.69 ng/g dw, while other m-NEOs were rarely detected (detection rates: < 15%). Significant correlation between ACE and thiacloprid (THD) was observed (p < 0.01), indicating their probably concurrent applications. ACE was significantly correlated to N-dm-ACE (p < 0.01), implicating the degradation of ACE in indoor environment. The estimated daily intake (EDIing) of NEOs via dust ingestion were far lower than the acceptable daily intake for NEOs. To our knowledge, this study provided a baseline nationwide investigation on the occurrence of NEOs in indoor dust of China.

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Acknowledgements

The authors wish to acknowledge the Natural Science Foundation of China (22022612, 41877375, and 22036004) and Natural Science Foundation of Guangdong Province, China (No. 2020A0104006, No. 2021A1515010243 and No. 2016A030306033) for their partial research support.

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Correspondence to Tao Zhang.

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Huang, Y., Zhang, B., Xue, J. et al. A Pilot Nationwide Survey on the Concentrations of Neonicotinoids and Their Metabolites in Indoor Dust from China: Application for Human Exposure. Bull Environ Contam Toxicol 109, 900–909 (2022). https://doi.org/10.1007/s00128-022-03600-9

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  • DOI: https://doi.org/10.1007/s00128-022-03600-9

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