Field Demonstration of NRL Environmental Flow Immunosensor for Environmental Monitoring

摘要

An NRL continuous flow immunosensor, known as the FAST 2000, has been developed that is adaptable for use in a variety of environmental monitoring platforms. During the past year, the FAST 2000 instrument was tested in initial field trials at numerous military bases identified by the EPA as priority Superfund cleanup sites. The field study objective was to measure the effectiveness and efficiency of the Flow Immunosensor in performing on-site field analysis for two selective explosives, TNT and RDX. Samples containing unknown concentrations of explosives were collected from groundwater and monitoring wells at various locations and analyzed in NRL sensor with no sample pretreatment or concentration. For data validation and in conjunction with the tests performed on-site by the Flow Immunosensor, independent laboratory analyses of lab splits from the field samples and explosives standards were performed by High Performance Liquid Chromatography using the EPA SW846 Method 8330 for explosives. In addition to the contaminated field samples, appropriate controls, blanks and interferents were tested in the lab for certification and validation data requirements. Results were evaluated based on accuracy, precision, rate of false positives/negatives, cost, time, and waste generation.