Rapid Screening Technique for Polychlorinated Biphenyls (PCBs) using Room Temperature Phosphorescence.
Vo-Dinh-T; Miller-GH; Pal-A; Watts-W; Uziel-M; Eastwood-D; Lidberg-R
NIOSH 1991 Feb:819-822
A screening technique using room temperature phosphorescence for polychlorinated biphenyls (PCBs) was developed. An overview was presented of both this analytical procedure and the instrumentation to detect trace levels of chemical pollutants and related biomarkers in complex environmental samples. Room temperature phosphorimetry was based on detecting the phosphorescence emitted from organic compounds adsorbed on solid substrates at ambient temperatures. With this method, a solution containing the materials to be analyzed is obtained using rapid extraction procedures. The sample solution is spotted on filter paper and allowed to dry before being transferred to a spectrometer equipped with a phosphoroscope. Pretreating the filter paper with a heavy atom salt solution can enhance the sensitivity of the method. The authors conclude that room temperature phosphorimetry techniques offer several advantages including rapid analysis, simple set up, field applicability, and low per analyst cost. The method can be used for field screening during cleanup operations.
Analytical-chemistry; Chemical-analysis; Hazardous-materials; Environmental-pollution; Polychlorinated-biphenyls; Spectrographic-analysis; Soil-analysis;
Field Screening Methods for Hazardous Wastes and Toxic Chemicals. Second International Symposium, February 12-14, 1991. Sponsored by U.S. EPA; U.S. DOE; U.S. Army Toxic and Hazardous Materials Agency; U.S. Army Chemical Research Development and Engineering Center; U.S.A.F.; Florida State Univ.; National Environmental Technology Applications Corp.; and NIOSH