Jiangsu University

Pei Jiang

Xiaobo Zou

Jiyong Shi

Xiaowei Huang

Zhihua Li

Xuetao Hu

Xinai Zhang

Junjun Zhang

Wenting Li

Yahui Li

The present invention belongs to the field of organophosphorus pesticide (OP) detection, and relates to a method for detecting an OP by a microfluidic chip based on a fluorescent sensing film. A porous fluorescent sensing film and the microfluidic chip are first constructed. The fluorescent sensing film is fabricated through layer-by-layer self-assembly of a platinum nanoparticle@oxalate-metal-organic framework (MOF) composite and a porous two-dimensional (2D) nanosheet, and has the functions of specifically detecting OPs and blocking macromolecular interferents. The microfluidic chip includes a sample channel, injection channels, reaction tanks, microfluidic channels, a detection tank, and an optical fiber channel, such that sample pretreatment and detection processes are integrated in the chip. An OP detection system is established by combining a portable constant-pressure syringe pump, a laser, a spectrometer, a signal transmitter, and a signal indicator, such that test devices are miniaturized and integrated and the OP detection is standardized.

Method for detecting organophosphorus pesticide by microfluidic chip based on fluorescent sensing film

Growing community of inventors

Jiangsu, China

Pei Jiang