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Occurrence of Neonicotinoids in Chinese Apiculture and a Corresponding Risk Exposure Assessment
Xinran Wang1, Dave Goulson2, Lanzhen Chen1,3,4,5
1Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100093, P. R. China.
Environmental Science & Technology
|February 25, 2020
Summary
Neonicotinoid insecticides contaminate 40.8% of Chinese honey samples, with commercial crops showing higher levels. While risks to bees exist, detected levels are likely safe for human consumption.
Area of Science:
- Environmental Science
- Toxicology
- Food Safety
Background:
- Neonicotinoids are widely used insecticides with known adverse effects on non-target organisms.
- Limited data exists on neonicotinoid contamination in China's environment.
- Honeybees (Apis mellifera and Apis cerana) are vital pollinators and can accumulate environmental contaminants.
Purpose of the Study:
- To assess neonicotinoid contamination levels and distribution in Chinese honey.
- To investigate the correlation between contamination and honey plant species.
- To evaluate human dietary exposure risks and risks to honeybees.
Main Methods:
- Analysis of 693 honey samples from Apis mellifera and Apis cerana across China.
- Quantification of five neonicotinoids using analytical chemistry techniques.
- Risk assessment for human consumption and honeybee health.
Main Results:
- 40.8% of honey samples tested positive for at least one neonicotinoid.
- Higher contamination rates were observed in honey from commercial crops and Apis mellifera.
- Neonicotinoid concentrations in honey were comparable to levels known to harm bees.
- Dietary risk assessment suggested honey consumption posed a low risk to humans.
Conclusions:
- Neonicotinoid contamination is prevalent in Chinese honey, particularly from commercial sources.
- Honeybee health may be at risk due to detected neonicotinoid levels.
- Current neonicotinoid levels in honey are deemed safe for human consumption.
