Abstract

The authors describe a mask correlation spectrometer operating in tandem with a gas filter analyzer and intended for the monitoring of iodine and other toxic gases in the atmosphere. An algorithm is constructed to demonstrate that in the proposed fluorescence-correlation method the recorded signal is proportional to the concentration of the analyzed path gas and to assess the sensitivity thresholds of the method. The authors also pursue the analogy between the fluorescence-correlation and gas-filter methods and compare their signal-to-noise ratios. Experimental data for the determination of iodine are presented.

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