Ratio-type fluorescent paper chip based on polyester fiber film, preparation method and application

Abstract

The invention discloses a ratio-type fluorescent paper chip based on a polyester fiber membrane, a preparation method and an application thereof, and belongs to the technical field of material science engineering and microfluidic chips, and grafts CdTe QDs and RhB onto the surface of a polyester fiber membrane in sequence , and then adopt surface molecular imprinting technology to form 2,4-D imprinted holes on the surface of the polyester fiber membrane to obtain fluorescent molecularly imprinted paper; the fluorescent molecularly imprinted paper is installed on the carrier to obtain a ratio-type fluorescent paper chip; the present invention uses Compared with a single fluorescent paper chip, the two kinds of fluorescence can realize internal self-correction, making the detection results clearer and more accurate; it has the advantage of simple pre-treatment, and the fruits and vegetables can be tested after simple cleaning, crushing and filtering, and can be used The rapid auxiliary detection of 2,4‑D in complex fruit and vegetable samples has no restrictions on the types of samples to be tested; the detection time is short, easy to operate, and easy to carry; polyester fiber paper as the base not only reduces costs, but also Friendly to the environment.

Description

technical field [0001] The invention belongs to the technical fields of material science engineering and microfluidic chips, and in particular relates to a ratio-type fluorescent paper chip based on a polyester fiber film, a preparation method and an application. Background technique [0002] 2,4-Dichlorophenoxyacetic acid (2,4-D) is a phenoxyacetic acid plant growth regulator, which regulates metabolism by stimulating plant growth, and is often used in fruits and vegetables. However, because it is difficult to degrade and easily remains in fruits and vegetables, it may directly or indirectly enter the human body through the food chain and pose a threat to human health, so the detection of 2,4-D in fruits and vegetables is of great significance. [0003] The commonly used 2,4-D detection technology is high-performance liquid chromatography, but this method is difficult to popularize due to the precision and expensive equipment, long detection time, and complicated pretreatme...

AI Technical Summary

Problems solved by technology

However, because it is difficult to degrade and easily remains in fruits and vegetables, it may directly or indirectly enter the human body through the food chain and pose a threat to human health, so the detection of 2,4-D in fruits and vegetables is of great significance

[0003] The commonly used 2,4-D detection technology is high-performance liquid chromatography, but this method is difficult to popularize due to the precision and expensive equipment, long detection time, and complicated pretreatment, which seriously limits the detection application of 2,4-D. From the above, it can be seen that 2,4-D is very likely to remain in fruits and vegetables, and will cause harm to the human body. Therefore, it is very important to establish a 2,4-D detection method that is efficient, convenient, portable, low-cost and environmentally friendly. Necessary

Images