多通道农药残留现场快速检测仪器研制

项目名称： 多通道农药残留现场快速检测仪器研制

项目编号： No.21207047

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 环境化学

项目作者： 于永

作者单位： 吉林大学

项目金额： 23万元

中文摘要： 本课题采用96个阵列式超高亮发光二极管（LED）既作光源又作单色器，实现了光源/单色器、比色池和检测器三个器件集成的模块化比色装置，该阵列式多通道模块化比色装置用作新型农药残毒快速检测仪的核心器件，可实现96通道同时检测。该模块化比色装置替代了传统的钨灯、反射镜、透镜、光栅或钨灯、滤光片、光纤构成的光学系统。解决了在恶劣的环境条件下（如振动、潮湿、高温等）使波长偏移钨灯老化造成工作曲线失真，钨灯光源使用寿命短和能耗大等问题。采用恒流源、脉冲供电技术和双波长测量的差吸光度技术，消除或最大程度地减少因光源闪烁漂移，并将噪声降低到最低程度，提高了检测精度。研制出96通道阵列式农药残留检测仪，不但检测速度快（可实现每小时检测1440个果蔬样品）；而且有效的解决了多通道检测一致性差，假阳（阴）性检出率较高等技术难题。该项研究将为多波长阵列式的新一代酶标仪和抗生素检测仪的研制奠定了基础。

中文关键词： 多通道；现场；农药残留；；

英文摘要： The topic use 96 array of ultra bright light emitting diode (LED) as a light source for the monochromator, the light source / monochromator than the color of the pool and the detector three devices integrated modular colorimetric device, thearray of multi-channel modular colorimetric device used as the core of the device for rapid detection of new pesticide residues, 96-channel simultaneous detection. The modular colorimetric device instead of the traditional tungsten lights, reflectors, lenses, grating, or tungsten lights, filters, fiber optical system consisting of Solved under harsh environmental conditions (such as vibration, humidity, high temperature, etc.) so that the wavelength shift tungsten lamp aging caused by the working curve distortion, tungsten light source service life and energy and other issues. Constant current source, the pulsed power supply technology and dual-wavelength measurement of the differential absorbance technology to eliminate or minimize the flashing drift due to the light source, and reduce the noise to a minimum, to improve the detection accuracy. Developed a 96-channel array pesticide residue detectors not only detect speed (which can detect the 1440 fruit and vegetable samples per hour); and effective solution to the poor consistency of multi-channel detection, false positive

英文关键词： multi-channel；in field；pesticide residues；；