ENVR 274 |
| The increasing need for inexpensive, real-time monitoring devices has added new impetus to developing chemical analysis systems that integrate sampling, sample preparation and detection. One way to enhance sensitivity in these measurements is to provide concentration and/or extraction along with other functionalities. The objective is to integrate these components to develop total analytical systems for on-line, real-time analysis that will enhance the management of water resources. This presentation addresses some recent developments including membrane sampling and microconcentration techniques. The water monitoring devices developed here can be used as laboratory instruments, field analytical and on-line monitoring devices. Microfabricated devices using MEMS technology have also been developed, which can lead to miniaturization. Using supported liquid membrane extraction and liquid-liquid membrane extraction, direct HPLC-UV detection without derivatization was possible for nine haloacetic acids. Large linear ranges, high precision and sub-ppb level detection limits were obtained. |
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Advances in Drinking Water Disinfection and Disinfection Byproduct Management
6:00 PM-8:00 PM, Wednesday, April 9, 2008 Morial Convention Center -- Hall A, Poster
Division of Environmental Chemistry |