Comparison of In Situ Laser-Induced Fluorescence (LIF) Measurements of Petroleum Hydrocarbons in Soils with Conventional Laboratory Measurements
NAVAL COMMAND CONTROL AND OCEAN SURVEILLANCE CENTER RDT AND E DIV SAN DIEGO CA
Pagination or Media Count:
This presentation reports the results of a comprehensive field validation effort in which measurements from the cone penetrometer deployed LIF sensor are compared directly with results from conventional laboratory-based chemical analyses of samples collected using traditional methods. To minimize spatial and temporal variability associated with sampling, discrete samples were collected immediately after push measurements by overboring the push hole with an auger and collecting soil samples with a split spoon sampler. Secondary fluorescence measurements were made on splits of the laboratory samples to provide direct comparison with laboratory results. All discrete samples were analyzed by EPA Methods 418.1, Total Recoverable Petroleum Hydrocarbons TRPH and DHS Method 8015-Modified, TPH. At some sites samples were also analyzed for SVOC, EPA Method 8270, andor an enhanced 8270 that quantifies 40 individual polynuclear aromatic hydrocarbons PAHs.
- Chemical, Biological and Radiological Warfare
- Solid Wastes and Pollution and Control