Knowledge graph of wastewater-based epidemiology development: A data-driven analysis based on research topics and trends

Abstract

Wastewater-based epidemiology (WBE) has contributed significantly to the monitoring of drug use and transmission of viruses that has been published in numerous research papers. In this paper, we used LitStraw, a self-developed text extraction tool, to extract, analyze, and construct knowledge graphs from nearly 900 related papers in PDF format collected in Web of Science from 2000 to 2021 to analyze the research hotspots and development trends of WBE. The results showed a growing number of WBE publications in multidisciplinary cross-collaboration, with more publications and close collaboration between the USA, Australia, China, and European countries. The keywords of illicit drugs and pharmaceuticals still maintain research hotness, but the specific research hotspots change significantly, among which the research hotspots of new psychoactive substances, biomarkers, and stability show an increasing trend. In addition, judging the spread of COVID-19 by the presence of SARS-CoV-2 RNA in sewage has become the focus since 2020. This work can show the development of WBE more clearly by constructing a knowledge graph and also provide new ideas for the paper mining analysis methods in different fields. Supplementary Information The online version contains supplementary material available at 10.1007/s11356-023-25237-9.

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DataSheet1.docx

“…Firstly, on the detection of small molecules, WBE first gained recognition for monitoring the consumption of illegal drugs within the population (Gao et al, 2023). A scheme of how this consumption is estimated from wastewater analysis is shown in Supplementary Figure S1.…”

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