This map shows the geographic impact of R Posthumus's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by R Posthumus with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites R Posthumus more than expected).
This network shows the impact of papers produced by R Posthumus. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by R Posthumus. The network helps show where R Posthumus may publish in the future.
Co-authorship network of co-authors of R Posthumus
This figure shows the co-authorship network connecting the top 25 collaborators of R Posthumus.
A scholar is included among the top collaborators of R Posthumus based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with R Posthumus. R Posthumus is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Posthumus, R, et al.. (2006). Environmental Risk Limits for several phosphate esters,with possible application as flame retardant. Rivm Repository (Netherlands National Institute for Public Health and the Environment).70 indexed citations
3.
Posthumus, R, et al.. (2006). Environmental Risk Limits for alcohols, glycols, and some other relatively soluble and/or volatile compounds 1. Ecotoxicological evaluation. Rivm Repository (Netherlands National Institute for Public Health and the Environment).2 indexed citations
4.
Posthumus, R, et al.. (2005). Environmental Risk Limits for Nine Trace Elements.6 indexed citations
5.
Posthumus, R, Theo P. Traas, Willie J.G.M. Peijnenburg, & Etje Hulzebos. (2005). External validation of EPIWIN biodegradation models. SAR and QSAR in environmental research. 16(1-2). 135–148.23 indexed citations
Posthumus, R, et al.. (2004). Environmental Risk Limits for Alkylphenols and Alkylphenol ethoxylates.16 indexed citations
8.
Posthumus, R, et al.. (2003). Evaluatie onderbouwing BodemGebruiksWaarden. Rivm Repository (Netherlands National Institute for Public Health and the Environment).4 indexed citations
Posthumus, R, et al.. (2003). Environmental Risk Limits for 2-propanol, formaldehyde and 4-chloromethylphenols - updated proposals.1 indexed citations
11.
Posthumus, R & W Slooff. (2001). Implementation of QSAR's in ecotoxicological risk assessments.3 indexed citations
12.
Posthumus, R, et al.. (2001). Ecotoxicological Serious Risk Concentrations for soil, sediment and (ground)water: updated proposals for first series of compounds. Annex. Rivm Repository (Netherlands National Institute for Public Health and the Environment).29 indexed citations
Traas, Theo P., et al.. (1999). Maximum Permissible Concentrations for polychlorinated biphenyls. Rivm Repository (Netherlands National Institute for Public Health and the Environment).6 indexed citations
15.
Posthumus, R, et al.. (1999). Maximum permissible concentrations and negligible concentrations for phthalates (dibutylphthalate and di(2-ethylhexyl)phthlate), with emphasis on endocrine disruptive properties.1 indexed citations
16.
Posthumus, R, et al.. (1999). Risk limits for boron, silver, titanium, tellurium, uranium and organosilicon compounds in the framework of EU Directive 76/464/EEC.6 indexed citations
17.
Crommentuijn, Trudie, et al.. (1997). Maximum Permissible Concentrations and NegligibleConcentrations for pesticides. Rivm Repository (Netherlands National Institute for Public Health and the Environment).28 indexed citations
18.
Witjes, Max J. H., et al.. (1997). Distribution of aluminum phthalocyanine disulfonate in an oral squamous cell carcinoma model. In vivo fluorescence imaging compared with ex vivo analytical methods.. PubMed. 65(4). 685–93.12 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.