Advances and hotspots of phosphorus form analysis of sediments based on different extraction methods using CiteSpace

Phosphorus (P) forms in sediments can be affected by various environmental factors, and P transformation in the water-sediment interface contributes to the eutrophication of water bodies. Therefore, a series of methods have been proposed to extract P forms in sediments. In order to explore the progress and research hotspots of P form analysis of sediments using different extraction methods, the core collection of Web of Science is taking as data source, and the CiteSpace knowledge map analysis tool is used to carry out visual analysis from the aspects of publication output, country analysis, publishing institution analysis, keyword analysis, literature co-citation analysis, burst terms analysis, and cluster analysis. The literature on the extraction methods for P form analysis of sediments was found to have boomed from 2013 to 2022, with higher contributions from China, France and United States. The cluster analysis of keywords and co-citation clarified the main research frontiers and hotspots. The bioavailability, migration and transformation mechanisms of P forms will become a new hotspot in this field in the future.