The picloram (4-amino-3,5,6-trichloro-2-pyridinecarboxylic acid) herbicide is widely applied to control the growth of woody plants and it has been frequently detected in aqueous environments due to its poor adsorption by soils and high leaching potential. Consequently, the removal of picloram from contaminated environmental waters is of major concern due to its adverse impacts on aquatic organisms, soils and animals. The development of a method for the extraction and transport of picloram from aqueous solutions using a polymer inclusion membrane (PIM) composed of cellulose triacetate, trioctylmethylammonium chloride (Aliquat 336) and 2–nitrophenyl octyl ether (NPOE) is reported. The experimental method was optimized for the PIM composition, and the type and concentration of stripping reagent. The optimized method demonstrated good performance indicators of flux and transport efficiency for picloram during non-competitive and competitive transport experiments. The PIM was also successfully applied in a passive sampling device to recover picloram at the maximum permissable concentration of 500 μg/L from a complex matrix of natural water. Findings from this study demonstrate that PIMs can serve as a potential alternative method for the removal and recovery of picloram and related herbicides from contaminated aqueous solutions.

吡氯仑（4-氨基-3,5,6-三氯-2-吡啶羧酸）除草剂被广泛用于控制木本植物的生长，由于其在土壤中的吸附性差和浸出率高，在含水环境中经常被发现。潜在。因此，从受污染的环境水中去除吡咯烷是一个主要问题，因为它对水生生物，土壤和动物具有不利影响。据报道，已经开发了一种使用由三乙酸纤维素，三辛基甲基氯化铵（Aliquat 336）和2-硝基苯基辛基醚（NPOE）组成的聚合物包裹膜（PIM）从水溶液中提取和运输吡咯烷的方法。针对PIM的组成，汽提剂的类型和浓度对实验方法进行了优化。优化的方法在非竞争性和竞争性转运实验中显示了吡咯烷的通量和转运效率的良好性能指标。PIM还成功地应用于被动采样设备中，以从复杂的天然水基质中回收最大允许浓度为500μg/ L的吡咯烷。这项研究的结果表明，PIM可以作为从受污染的水溶液中去除和回收吡咯烷和相关除草剂的潜在替代方法。