Abstract
Persistent organic pollutants (POPs) have attracted significant attention because of their bioaccumulation, persistence, and toxicity. As anthropogenic products, POPs mainly contain polychlorinated biphenyls (PCBs), organochlorine pesticides (OPs), and polycyclic aromatic hydrocarbons (PAHs), and they pose a great threat to human health and the environment. To deal with these toxic contaminants, many different kinds of strategies for sensitively detecting POPs have been developed, such as high performance liquid chromatography (HPLC), surface enhanced Raman spectroscopy (SERS), and fluorescence. This paper mainly summarized the achievements of spectroscopy technologies, which generally consist of SERS, surface plasmon resonance (SPR), and fluorescence, in the detection of low-concentration POPs in different matrices. In addition, a retrospective summary is made on several critical considerations, such as sensitivity, specificity and reproducibility of these spectroscopy technologies in practical applications. Finally, some current challenges and future outlooks for these spectroscopy technologies are provided in regards to environmental analysis.
Highlights
Persistent organic pollutants (POPs) are of global concern due to their toxicity and bioaccumulation in adipose tissue through the food chain [1,2,3,4]
Recent advances in spectroscopy technologies, such as SERS, surface plasmon resonance (SPR), and fluorescence selectivity can be obtained by designing elaborate nanostructures for the substrates and improving for trace detection of POPs were summarized
Nowadays spectroscopy technology is confronted by some challenges in the practical support some novel strategies for monitoring various environmental pollutants in the future
Summary
Persistent organic pollutants (POPs) are of global concern due to their toxicity and bioaccumulation in adipose tissue through the food chain [1,2,3,4]. An enormous amount of effort has been devoted to exploring novel strategies like surface-enhanced Raman spectroscopy (SERS) [11,12], enzyme-linked immunosorbent assay (ELISA), and fluorescence [13,14] Among these emerging methods, spectroscopy technologies are favorable for trace detection of POPs due to their inherent advantages, such as high sensitivity and rapid and real-time monitoring. For the trace detection of POPs. this paper covered some current challenges and future applied prospects of spectroscopy technology in the detection of small molecular environmental pollutants
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