A method is described for calculating emission lifetimes (τ) for flash decay. The fluorescence decay of the excited state of most biopo-lymers
and biopolymer conjugates and complex
is not
in general a simple exponential
and the time scale of instrumental distortion
the flash duration
and T are comparable. Conventinal simple procedure fails. The method of moments is used to establish a means of analyzing such mono-or multi-exponential decays.The method is tested by the use of TQ-16 computer. The experimental result show that the method of moments is promising as a means of analyzing decay curves.