A Simple and Rapid Spectrophotometric Method for Determination of Ultra Trace Amounts of Thallium with 4-(4-N,N-Dimethylaminophenyl)urazole as a New Reagent

B. Rezaei, S. Mallakpour, H. Khalili and Z. Rafiee, Annali di Chimica, 2005, ,95 (11-12), 897-903. A Simple and Rapid Spectrophotometric Method for Determination of Ultra Trace Amounts of Thallium with 4-(4¢-N,N-Dimethylaminophenyl)urazole as a New reagent.