The method detects the presence of poly-chlorinated biphenyls on a surface, by the use of UV fluorescence spectroscopy in the back-emitting mode. The apparatus comprises a source of UV radiation. Exposure means are provided for conveying UV radiation from the source to the surface. Collecting means collect...http://www.google.es/patents/US20040011965?utm_source=gb-gplus-sharePatente US20040011965 - Method and apparatus for detecting chemical contamination
Method and apparatus for detecting chemical contamination
