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This paper presents a series of methods for measuring and estimating fugitive emission rates, which have been widely applied in environmental impact assessment and establishing national emission standard and health protection zone (buffer zone) standards in China.

Industrial complexes may release dust emissions through several to up to tens of stacks, as well as via fugitive area sources. Several diffusion models for small-scale fugitive dust sources have been developed and combined with a point source model to form a series of models for industrial complexes. The applicable area of these models and the methods for obtaining the main parameters in the models have been tested and verified using measurement data gained from several field experiments. The models developed in this paper can give quite satisfactory results when compared to other current models.