Development and Calibration of the Polar Organic Chemical Integrative Sampler (POCIS) for Neonicotinoid Pesticides
Development and Calibration of the Polar Organic Chemical Integrative Sampler (POCIS) for Neonicotinoid Pesticides
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DOI：
10.1002/etc.4729
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发表时间：
2020-04
影响因子：
4.1
通讯作者：
K. Noro;S. Endo;Y. Shikano;A. Banno;Y. Yabuki
中科院分区：
文献类型：
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作者：
K. Noro;S. Endo;Y. Shikano;A. Banno;Y. Yabuki
新烟碱类杀虫剂是一种亲水性强的内吸性杀虫剂，在世界范围内广泛使用。为了评估其环境风险，必须监测这些农药在水生环境中的浓度。尽管极性有机化学综合进样器（POCIS）已被证明是许多高亲水性化合物的合适被动进样器，但Oasis HLB（沃茨）POCIS在监测类烟碱农药方面存在局限性，例如线性吸收范围较短。本研究通过选择合适的吸附剂和过滤器，对烟碱类农药的POCIS进行了优化。ENVI‐Carb（Supelco）无孔碳基吸附剂在强吸附和高回收率之间表现出良好的平衡。静态更新实验表明，我们的POCIS装置使用ENVI-Carb和聚醚砜膜过滤器，具有3 d（呋虫胺）至28 d（噻虫胺、吡虫啉、啶虫脒和噻虫啉）的线性范围，这比HLB POCIS（≤1 [呋虫胺]至14 d）的线性范围更长。使用带有聚四氟乙烯膜的ENVI‐Carb的POCIS的采样率（0.270 L/d [噻虫胺]至0.686 [吡虫啉] L/d）高于HLB POCIS的短期部署采样率。新的POCIS测量的实际河水中的时间加权平均浓度与重复抓取采样获得的结果吻合良好，在30%以内。此外，POCIS检测到2个烟碱类农药，没有被抓样检测。因此，拟议的POCIS是一个很有前途的工具，监测类烟碱农药。环境毒理化学2020;39：1325-1333。联系我们_SETAC
Neonicotinoid pesticides are highly hydrophilic systemic insecticides that have been extensively used worldwide. To evaluate their environmental risks, the concentrations of these pesticides in the aquatic environment must be monitored. Although the polar organic chemical integrative sampler (POCIS) has proved to be a suitable passive sampler for many highly hydrophilic compounds, Oasis HLB (Waters) POCIS has shown limitations for the monitoring of neonicotinoid pesticides, such as short linear uptake ranges. In the present study we optimized POCIS for neonicotinoid pesticides by selecting suitable adsorbents and filters. The ENVI‐Carb (Supelco) nonporous carbon‐based adsorbent demonstrated a good balance between strong sorption and high recovery. Static renewal experiments showed that the our POCIS device using ENVI‐Carb with a polyethersulfone membrane filter had a 3 d (dinotefuran) to 28 d (clothianidin, imidacloprid, acetamiprid, and thiacloprid) linear range, which is longer than that of HLB POCIS (≤1 [dinotefuran] to 14 d). The POCIS using ENVI‐Carb with a polytetrafluoroethylene membrane had higher sampling rates (0.270 L/d [clothianidin] to 0.686 [imidacloprid] L/d) than those of the HLB POCIS for short‐term deployment. The time‐weighted average concentrations in actual river water measured by the new POCIS were in good agreement with those obtained by repeated grab sampling, within 30%. Moreover, POCIS detected 2 neonicotinoid pesticides that were not detected by grab sampling. Thus, the proposed POCIS is a promising tool for the monitoring of neonicotinoid pesticides. Environ Toxicol Chem 2020;39:1325–1333. © 2020 SETAC