The feasibility of measuring pesticides by fluorescence method is analyzed on the foundational principle that molecules of organic substance can emit fluorescence when excited by rays.A fiber-optic fluorescent measuring system,which can be used for detecting the organic pesticides' concentration in soil,is put forward based on the technique of fiber-optic sensing and fluorescence analysis.In the system,a pulsed xenon lamp is used as an excitation lamp source,a self-made cone-shape fiber-optic probe for dete...