环境监测中两种原位被动采样技术——薄膜扩散平衡技术和薄膜扩散梯度技术

In-situ Passive Sampling Techniques for Environmental Monitoring-Diffusive Equilibrium in Thin-Films and Diffusive Gradients in Thin-Films Technique

介绍了近年来环境监测中两种新的原位被动采样技术-薄膜扩散平衡(DET)技术和薄膜扩散梯度(DGT)技术。综述了DET技术的原理、装置的组成和构造、特点及在环境监测中的应用。关于DGT技术着重论述了对被监测物质有效态的累积原理,总结了扩散相和结合相的发展,并展望了未来的发展方向。

Two in-situ passive sampling techniques and devices including diffusive equilibrium in thin-films （DET） technique and diffusive gradients in thin-films （DGT） technique are introduced. The principles, devices, advantages and application of DET technique are summarized. The accumulation theory of DGT technique for labile species is reviewed. The diffusive and binding phases of DGT technique are also summarized. The prospects of DGT technique are also assessed.