Diffusive gradient in thin films (DGT) for organics has received considerable attention for studying the chemical dynamics of various organic pollutants in the environment. This review investigates current limitations of DGT for organics and identifies several research gaps for future studies. The application of a protective outer filter membrane has been recommended for most DGT applications, however, important questions regarding longer lag times due to significant interaction or adsorption of specific groups of compounds on the outer membrane remain. A modified DGT configuration has been developed that uses the diffusive gel as the outer membrane without the use of an extra filter membrane, however use of this configuration, while largely successful, remains limited. Biofouling has been a concern when using DGT for metals; however, effect on the performance of DGT for organics needs to be systemically studied. Storage stability of compounds on intact DGT samplers has been assessed in select studies and that data is synthesized here. DGT has been used to describe the kinetic desorption of antibiotics from soils and biosolids based on the soil/biosolid physical-chemical characteristics, yet applications remain limited and requires further research before wide-scale adoption is recommended. Finally, DGT for organics has been rarely, albeit successfully, combined with bioassays as well as in vivo bioaccumulation studies in zebrafish. Studies using DGT combined with bioassays to predict the adverse effects of environmental mixtures on aquatic or terrestrial biota are discussed here and should be considered for future research.

有机物的薄膜扩散梯度 (DGT) 在研究环境中各种有机污染物的化学动力学方面受到了相当多的关注。本综述调查了 DGT 对有机物的当前局限性，并确定了未来研究的几个研究空白。对于大多数 DGT 应用，建议使用保护性外过滤膜，但是，由于外膜上特定化合物组的显着相互作用或吸附导致延迟时间更长的重要问题仍然存在。已经开发出一种改进的 DGT 配置，它使用扩散凝胶作为外膜，而不使用额外的过滤膜，但是这种配置的使用虽然大体成功，但仍然有限。使用 DGT 处理金属时，生物污垢一直是一个问题；然而，需要系统地研究对有机物 DGT 性能的影响。在选定的研究中评估了化合物在完整 DGT 采样器上的储存稳定性，并在此处合成了数据。DGT 已被用于描述基于土壤/生物固体物理化学特性的抗生素从土壤和生物固体中的动力学解吸，但应用仍然有限，需要进一步研究，然后才能推荐大规模采用。最后，有机物的 DGT 很少（尽管成功）与生物测定以及 DGT 已被用于描述基于土壤/生物固体物理化学特性的抗生素从土壤和生物固体中的动力学解吸，但应用仍然有限，需要进一步研究，然后才能推荐大规模采用。最后，有机物的 DGT 很少（尽管成功）与生物测定以及 DGT 已被用于描述基于土壤/生物固体物理化学特性的抗生素从土壤和生物固体中的动力学解吸，但应用仍然有限，需要进一步研究，然后才能推荐大规模采用。最后，有机物的 DGT 很少（尽管成功）与生物测定以及斑马鱼体内生物积累研究。此处讨论了使用 DGT 结合生物测定来预测环境混合物对水生或陆生生物群的不利影响的研究，应考虑用于未来的研究。