The presence of polar pesticides in environmental waters is a growing problem. After application their migration into the aqueous phase is promoted by their high water solubility. Transport processes are usually complex and inputs are generally stochastic; this makes monitoring of this class of pesticides challenging using low volume spot samples of water. Recently there has been a trend to use passive samplers to monitor pesticides in river catchments as it is an in-situ time integrative sampling technique. The three main types of device used for this purpose are, Chemcatcher®, POCIS and o-DGT. This article reviews the fate and current state-of-the-art for monitoring polar pesticides in aqueous matrices. Principles and the theory of passive sampling and strategies for passive sampler design and operation are presented. Advances in the application of passive sampling devices for measuring polar pesticides are extensively critiqued; future trends in their use are also discussed.

在环境水中存在极性农药是一个日益严重的问题。施用后，它们的高水溶性促进了它们向水相中的迁移。运输过程通常很复杂，投入通常是随机的。这使得使用少量水进行现场监测具有挑战性。最近，有一种趋势是使用被动采样器来监测河流流域中的农药，因为它是现场监测时间综合采样技术。用于此目的的三种主要设备类型是Chemcatcher®，POCIS和o-DGT。本文回顾了监测水性基质中极性农药的现状和最新技术。介绍了无源采样的原理和理论，以及无源采样器设计和操作的策略。被动式采样设备在测量极性农药中的应用进展受到了广泛的批评；还讨论了其使用的未来趋势。