The dioxins contained in a gas such as an exhaust gas or in water such as waste...http://www.google.com/patents/US6573493?utm_source=gb-gplus-sharePatent US6573493 - Method and apparatus for laser analysis of dioxinsAdvanced Patent SearchPublication numberUS6573493 B1Publication typeGrantApplication numberUS 09/696,005Publication dateJun 3, 2003Filing dateOct 26, 2000Priority dateOct 26, 1999Fee s