| 花莉,党方琳,赵丹洋.陕西农田土壤新烟碱类农药残留和生物有效性[J].农业环境科学学报,2024,43(7):1524-1532. |
| 陕西农田土壤新烟碱类农药残留和生物有效性 |
| Residues and bioavailability of neonicotinoid pesticides in Shaanxi agricultural soil |
| 投稿时间：2023-02-07 |
| DOI：10.11654/jaes.2023-0087 |
| 中文关键词: 农田土壤 生物有效性 新烟碱类农药 残留 |
| 英文关键词: agricultural soil bioavailability neonicotinoid pesticide residue |
| 基金项目:陕西省重点研发计划项目（2023-YBNY-237）；陕西省农业厅科技计划专项（2020NCNY0016） |
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| 中文摘要: |
| 为评估新烟碱类农药潜在的环境风险，研究了陕西省不同地区吡虫啉、噻虫嗪、噻虫胺和啶虫脒的污染残留情况，探究了不同新烟碱类农药生物有效性及其影响因素。结果表明：陕西省农田土壤中新烟碱类农药残留范围为吡虫啉 ND~113.71 μg·kg-1、啶虫脒ND~19.48 μg·kg-1、噻虫胺ND~184.32 μg·kg-1和噻虫嗪ND~145.02 μg·kg-1，其中噻虫胺和噻虫嗪残留量较高，需要引起足够的重视。此外，新烟碱类农药的生物有效性大小为噻虫胺<吡虫啉<啶虫脒<噻虫嗪，且其生物有效性随着土壤pH的增大而增大，随土壤有机质含量和土壤老化时间的增加而降低。研究表明，陕西省农田土壤中新烟碱类农药残留需引起重视，同时Tenax单点萃取技术可以作为简单快速评价新烟碱类农药生物有效性的替代方法，进一步为农业土壤新烟碱类农药污染问题以及农作物的质量安全和食用风险提供评价依据。 |
| 英文摘要: |
| The contamination residues of imidacloprid, thiamethoxam, clothianidin, and acetamiprid in different areas of Shaanxi Province were studied to assess the potential environmental risks of neonicotinoid pesticides. Furthermore, the bioavailability of different neonicotinoid pesticides and their influencing factors were investigated. The findings revealed that imidacloprid, acetamiprid, clothianidin, and thiamethoxam residues were at ND-113.71 μg·kg-1, ND-19.48 μg·kg-1, ND-184.32 μg·kg-1, and ND-145.02 μg·kg-1, respectively, in agricultural soils in Shaanxi Province. The high residual concentrations of clothianidin and thiamethoxam in agricultural soils should be adequately examined. The bioavailability of neonicotinoids exhibited the following trend：the bioavailability of neonicotinoids, such as clothianidin, imidacloprid, acetamiprid, and thiamethoxam, increased with elevated soil pH and reduced with an increase in the organic matter of soil and aging. It is crucial to monitor neonicotinoid pesticide residues in the agricultural soils of Shaanxi Province. Moreover, the bioavailability of ne-onicotinoid pesticides can be assessed quickly and easily using Tenax single-point extraction technology. This study provides a foundation for assessing the quality and safety of crops as well as a framework for evaluating the pollution of neonicotinoid insecti-cides in agricultural soil. |
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