Intelligent Detection and Analysis of Polycyclic Aromatic Hydrocarbons Based on Surface-Enhanced Raman Scattering Spectroscopy.

Qian Zhang,Fazli Wahid,Xuerou Chen,Wanyun Feng,Bowen Chen,Baiyuan Ding

doi:10.1155/2022/8330702

Abstract

Cycloaromatic hydrocarbons are a type of potentially hazardous chemicals that are widely present in the environment and pose a serious threat to human health. However, the traditional research methods for their detection process are cumbersome, the detection cycle is long, and the sensitivity is low. In response to the above problems, this article combines the molecular fingerprint information characteristics of surface-enhanced Raman scattering technology to simulate the four polycyclic aromatic hydrocarbons of pyrene, anthracene, phenanthrene, and trichenium and quantitative detection of cyclic aromatic hydrocarbons and four kinds of polycyclic aromatic hydrocarbon mixtures. The experimental results show that the PAHs based on SERS have the advantages of higher sensitivity and high selectivity, which verifies the accuracy and feasibility of the method in this article.

Highlights

In recent years, more and more people have begun to pay attention to the importance of supramolecular interactions in nature. is type of role is mainly based on the use of artificially designed selective recognition substrates and target substances for molecular recognition [1]. e supramolecular system itself can be used in many fields such as drug sustained release and molecular sensing, and it can be used in combination with other technologies to take into account the applications of the two systems
Zhang Qian et al [22] constructed a method for detecting the residues of polycyclic aromatic hydrocarbons in the soil, using rapid solvent extraction, solid phase extraction, and gel permeation chromatography to purify the method, using high-performance liquid chromatography ultraviolet fluorescence. e detector is connected in series, and the method conforms to the national standard of measurement
In order to theoretically verify the above experimental results, we have carried out theoretical calculations on the surface coverage of the system

Summary

Introduction

More and more people have begun to pay attention to the importance of supramolecular interactions in nature. is type of role is mainly based on the use of artificially designed selective recognition substrates and target substances for molecular recognition [1]. e supramolecular system itself can be used in many fields such as drug sustained release and molecular sensing, and it can be used in combination with other technologies to take into account the applications of the two systems. E supramolecular system itself can be used in many fields such as drug sustained release and molecular sensing, and it can be used in combination with other technologies to take into account the applications of the two systems. SERS technology has a more attractive aspect than Raman technology in terms of enhancement factor exceeding 1010. It is widely used in chemistry with its own high sensitivity [4], high selectivity [5], and no fluorescence [6] and the fields of biosensing and detection. Polycyclic aromatic hydrocarbons are organic compounds containing two or more benzene rings or heterocyclic rings and their substitutions. Ese compounds are hardly soluble in water and soluble in organic solvents Combining with supramolecular systems can make up for the inability of SERS technology to be applied to molecules that have no physical or chemical interaction with the SERS substrate, inducing these molecules to combine with supramolecular systems to approach the area where the electromagnetic field is enhanced to determine the SERS signal of the molecule [2, 3].

Methods

Results

Conclusion