Preliminary investigation on the feasibility of size selective passive sampling for atmospheric particles was undertaken through laboratory simulated and outdoor sampling. The passive samplers used in the research were improved from passive sampler used for sampling atmospheric organic contaminants. Sampled particle size distribution was analyzed by MasterSizer 2000 laser particle size analyzer...

Hydrologic and biogeochemical signatures in intensively managed catchments: data synthesis and development of a passive surfacewater quality sampler." MS ii To Emily iii ACKNOWLEDGMENTS

Grab sampling and automated sampling are not suitable or logistically too constraining for the monitoring of pesticides in dynamic streams located in agricultural watersheds. In this work, we applied stir bar sorptive extraction (SBSE) Twisters® directly in two small rivers of a French vineyard (herein referred to as "passive SBSE"), for periods of one or two weeks during a month, for the passi...

L m 2-stable digital-control networks for multiple continuous passive plants. A constructive method is presented in which L m 2-stability can be guaranteed for networked control of multiple passive plants in spite random time varying delays and data dropouts. The passive plants are interfaced to a wave variable based passive sampler (PS) and passive hold (PH) which allows a passive digital cont...

A constructive method is presented in which L2 -stability can be guaranteed for networked control of multiple passive plants in spite of random time varying delays and data dropouts. The passive plants are interfaced to a wave variable based passive sampler (PS) and passive hold (PH) which allows a passive digital control network to be constructed. A power junction is used to facilitate the int...

Currently, there is an effort under way to encourage remedial project managers at contaminated sites to use passive sampling to collect freely dissolved concentrations (Cfree ) of hydrophobic organic contaminants to improve site assessments. The objective of the present study was to evaluate the use of passive sampling for measuring water column Cfree for several hydrophobic organic contaminant...

Passive samplers for moderately hydrophobic organic compounds (MHOCs) (i.e., log Kow ranging from 2 to 5) are under-developed compared to those that target polar or strongly hydrophobic compounds. The goal of this study was to identify a suitable polymer and develop a robust and sensitive film-based passive sampler for MHOCs in aquatic systems. Poly(methyl methacrylate) (PMMA) exhibited the hig...