Berho Catherine, Claude Bérengère, Coisy Emeline, Togola Anne, Bayoudh Sami, Morin Philippe, Amalric Laurence
Bureau de Recherches Géologiques et Minières, Laboratory Division, 3 avenue Claude Guillemin, 45060, Orléans Cedex 2, France.
Institut de Chimie Organique et Analytique, UMR 7311, Université d'Orléans, Rue de Chartres, BP 6759, 45067, Orléans Cedex 2, France.
Anal Bioanal Chem. 2017 Mar;409(8):2029-2035. doi: 10.1007/s00216-016-0150-4. Epub 2017 Jan 31.
For more than 15 years, integrative passive sampling has been successfully used for monitoring contaminants in water, but no passive sampling device exists for strongly polar organic compounds, such as glyphosate. We thus propose a polar organic chemical integrative sampler (POCIS)-like tool dedicated to glyphosate and its main degradation product aminomethylphosphonic acid (AMPA), and describe the laboratory calibration of such a tool for calculating the sampling rates of glyphosate and AMPA. This passive sampler consists of a POCIS with molecularly imprinted polymer as a receiving phase and a polyethersulfone diffusion membrane. The calibration experiment for the POCIS was conducted for 35 days in a continuous water-flow-through exposure system. The calibration results show that the sampling rates are 111 and 122 mL day for glyphosate and AMPA respectively, highlighting the potential interest in and the applicability of this method for environmental monitoring. The influence of membrane porosity on the glyphosate sampling rate was also tested. Graphical Abstract ᅟ.
15 年多来，综合被动采样已成功用于监测水中的污染物，但对于草甘膦等强极性有机化合物，尚无被动采样装置。因此，我们提出了一种专门用于草甘膦及其主要降解产物氨甲基膦酸（AMPA）的极性有机化学综合采样器（POCIS）类工具，并描述了该工具用于计算草甘膦和 AMPA 采样率的实验室校准方法。这种被动采样器由一个以分子印迹聚合物为接收相的 POCIS 和一个聚醚砜扩散膜组成。POCIS 的校准实验在连续水流通过的暴露系统中进行了 35 天。校准结果表明，草甘膦和 AMPA 的采样率分别为 111 和 122 mL/天，突出了该方法在环境监测中的潜在价值和适用性。还测试了膜孔隙率对草甘膦采样率的影响。图形摘要ᅟ 。
