Room-temperature phosphorimetry of pesticides using a luminescence sampling system

Abstract

A versatile luminescence sampling system is described and used in the study of the room-temperature phosphorescence of certain pesticides. The limits of detection, linear dynamic range and heavy-atom enhancement factors are given for six phosphorescent pesticides as well as their rise, plateau and fall times. The effects of various heavy atoms and filter-paper substrates on both room-temperature phosphorescence signal inducement and blank background interference are also reported. Several synthetic mixtures of phosphorescent pesticides are analysed without separation using different degrees of room-temperature phosphorescence enhancement of these pesticides by various substrates and heavy atoms.