Rapid Detection Device of Methamphetamine Based on Improved Light Emitting Diode Induced Fluorescence Detector

摘要

In recent years, drug abuse has become a major public health problem, drug -driving poses serious threats to the public security. For the urgent need to rapidly on-site screen drug evidence and drug abusers, we have developed a fluorescent drug detection device based on LED induction (FD-LED). The core part of the device is 365 nm high-intensity LED excitation light source, FD-LED detector? performance was tested by the fluorescent brightener OB. In this study, the FD -LED detector was evaluated, and the influence of baseline noise, baseline drift, sensitivity, detection limit and quantitative limit on the detector was analyzed, the result showed that the proposed detector had good stability and sensitivity, at the same time, the chromatographic detection conditions were set, the solution based on methamphetamine C1 sample was collocated, and combined with liquid chromatography, a detection system for methamphetamine was developed. The results showed that the minimum detection amount of the sample was 1.0 x 10(-9) g/ml, and the signal-concentration relationship was obvious in the range of 1.0 ng/ml similar to 15.6 ng/ml. This device could provide an effective method for roadside andclinical and assistance to law enforcement officers.