alexa Abstract | Centrifugal Microfluidic Integrated Optical System for Sensing Pesticide Residues
ISSN: 2090-4967

Biosensors Journal
Open Access

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Research Article Open Access


We proposed and demonstrated an effective and non-destructive centrifugal microfluidic sensor (CMS) for analysis of organophosphorus pesticides (OPPs). The CMS was designed to have a sequential sample injection with two capillary valves. The actuation mechanism of CMS was controlled by centrifugal force, i.e. relative centrifugal force (×g). The OPPs analyte in CMS could be successfully derived into a mixer at 34 g and then spined into a detection reservoir at 537 g. The experiment results indicated that limit of detection for OPPs using CMS was 0.05 ppm, a linear relationship between OPPs logarithmic concentration (ppm) and inhibition rate (%) was 0.9215. Furthermore, series fresh vegetables were extracted and assayed for OPPs residue detection by using CMS. It was effective for OPPs detection. A non-destructive, rapid, reliable, and sensitive approach to OPPs analysis was demonstrated. This in turn opens up opportunities for healthcare applications, notably environmental monitoring, foods safety and other fields.

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Author(s): Jingjing Liu, Guoqing song, Tengfei Wang , Chunfei Hu , Hongmei Chen , and Fuqiang Nie


Centrifugal microfluidic chip, Organophosphorus pesticide detection,Capillary valve, Biomedical Sensor,Biosensors Application

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