在哥斯达黎加的大型香种植园附近监测当前使用农药污染的被动空气采样的评估
Karla Solano Díaz1,2, Clemens Ruepert1, María Melania Ramírez Quesada1
1Central American Institute for Studies on Toxic Substances (IRET), Universidad Nacional, Apartado Postal: 86-3000 Heredia, Costa Rica.
Environmental science & technology
|January 22, 2026
概括
使用聚氨泡盘进行被动空气采样,可有效在热带地区监测农药,持续长达三周. 这种方法为检测农药的活跃空气采样器提供了具有成本效益的替代方案.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 空气质量监测 空气质量监测
背景情况:
- 使用聚氨泡 (PUF) 盘进行被动空气采样是监测当前使用农药 (CUP) 的常见技术.
- 对于PUF-PAS测量CUP的准确性和有效性,特别是在热带条件下,需要进一步研究.
- 农业区附近的农药污染对公众健康和生态系统构成风险.
研究的目的:
- 评估PUF-PAS在热带环境中测量CUP的有效性和准确性.
- 为了比较PUF-PAS与高体积和低体积活性空气采样器 (AAS) 的性能.
- 在热带条件下确定PUF-PAS的最佳部署时间.
主要方法:
- 在哥斯达黎加的香种植园附近部署18个PUF-PAS设备,持续1-6周.
- 每周使用高体积和低体积活性空气采样器 (AAS) 同时采样空气.
- 使用微波辅助提取和液态染色学-双重质谱法 (LC-MS/MS) 分析收集的样本.
主要成果:
- 通过PUF-PAS和AAS检测到9种CUP,其中甲基,propidin和terbufos是最丰富的.
- 据估计,PUF-PAS的平均采样率为3.4 m3/day.
- 在3周后,PUF-PAS检测了9种农药中的8种,但在大多数CUP中,由于降解,在4周后发生了显著的损失 (≥50%).
结论:
- 在热带地区,PUF-PAS是一种可行且具有成本效益的AAS替代方案,用于监测CUP.
- 建议在热带气候下使用PUF-PAS的最大部署时间为三周,以避免大量的农药损失.
- 进一步的研究可能会探索在被动空气采样过程中减轻农药氧化降解的方法.
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