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

• Published in: Bulletin of environmental contamination and toxicology Vol. 109; no. 5; pp. 900 - 909
• Main Authors: Huang, Yingyan, Zhang, Bo, Xue, Jingchuan, Lan, Bang, Guo, Yuankai, Xu, Liangzheng, Zhang, Tao
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.11.2022; Springer Nature B.V
• Subjects: Aquatic Pollution; Dust; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Imidacloprid; Indoor environments; Ingestion; Insecticides; Labeling; Laboratories; Metabolites; Pesticides; Pollution; Soil Science & Conservation; Thiacloprid; Toxicology; Waste Water Technology; Water Management; Water Pollution Control; Neonicotinoids; Metabolites; Nationwide investigation; Indoor dust; Human exposure
• ISSN: 0007-4861; 1432-0800
• DOI: 10.1007/s00128-022-03600-9

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 (EDI ing ) 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.