Passive sampling is suitable for remote,low condition mountain areas and counties because of its simplicity, convenience, low cost- effectiveness, no pump- dependent, high accuracy and precision, light- weight, etc.

A passive sampler based on a gas molecular diffusion theory, combining with the Saltzman method, was used to determine the nitrogen dioxide of indoor and outdoor environment.

Based on the previous passive sampler, a new type of sulfur dioxide passive sampler was developed in this thesis.

The article research concentration and distribution of atmospheric polychlorinated biphenyls from the Pearl River Delta(PRD) using PUF passive sampling technique.