José E Roybal

1.2k total citations
44 papers, 1.1k citations indexed

About

José E Roybal is a scholar working on Spectroscopy, Analytical Chemistry and Pharmacology. According to data from OpenAlex, José E Roybal has authored 44 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Spectroscopy, 13 papers in Analytical Chemistry and 12 papers in Pharmacology. Recurrent topics in José E Roybal's work include Analytical Chemistry and Chromatography (15 papers), Antibiotics Pharmacokinetics and Efficacy (12 papers) and Pesticide Residue Analysis and Safety (10 papers). José E Roybal is often cited by papers focused on Analytical Chemistry and Chromatography (15 papers), Antibiotics Pharmacokinetics and Efficacy (12 papers) and Pesticide Residue Analysis and Safety (10 papers). José E Roybal collaborates with scholars based in United States and Thailand. José E Roybal's co-authors include Sherri B. Turnipseed, Allen P Pfenning, Wendy C. Andersen, Jeffrey A Hurlbut, Steve A Gonzales, Austin R Long, Laura R. Kuck, David C Holland, Heidi S Rupp and Calvin C Walker and has published in prestigious journals such as Journal of Agricultural and Food Chemistry, Journal of Chromatography A and Analytica Chimica Acta.

In The Last Decade

José E Roybal

43 papers receiving 1.0k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
José E Roybal United States 21 360 306 253 223 221 44 1.1k
J. A. Tarbin United Kingdom 20 231 0.6× 294 1.0× 268 1.1× 206 0.9× 306 1.4× 41 1.2k
Jeffrey A Hurlbut United States 18 301 0.8× 218 0.7× 191 0.8× 158 0.7× 170 0.8× 61 939
Dominique Hurtaud‐Pessel France 18 267 0.7× 221 0.7× 358 1.4× 204 0.9× 156 0.7× 48 887
Eric Verdon France 20 395 1.1× 320 1.0× 595 2.4× 281 1.3× 243 1.1× 62 1.3k
Jan Żmudzki Poland 25 391 1.1× 508 1.7× 499 2.0× 305 1.4× 348 1.6× 85 1.8k
Allen P Pfenning United States 15 312 0.9× 169 0.6× 181 0.7× 134 0.6× 119 0.5× 18 603
Harold C. Thompson United States 17 157 0.4× 235 0.8× 161 0.6× 214 1.0× 156 0.7× 66 900
Mark R. Madson United States 18 210 0.6× 233 0.8× 574 2.3× 222 1.0× 377 1.7× 30 1.0k
Milan Fránek Czechia 25 138 0.4× 350 1.1× 281 1.1× 214 1.0× 773 3.5× 68 1.9k
Wendy C. Andersen United States 23 228 0.6× 360 1.2× 835 3.3× 299 1.3× 582 2.6× 44 1.8k

Countries citing papers authored by José E Roybal

Since Specialization
Citations

This map shows the geographic impact of José E Roybal'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 José E Roybal with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites José E Roybal more than expected).

Fields of papers citing papers by José E Roybal

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by José E Roybal. 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 José E Roybal. The network helps show where José E Roybal may publish in the future.

Co-authorship network of co-authors of José E Roybal

This figure shows the co-authorship network connecting the top 25 collaborators of José E Roybal. A scholar is included among the top collaborators of José E Roybal 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 José E Roybal. José E Roybal is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Turnipseed, Sherri B., Wendy C. Andersen, Christine M. Karbiwnyk, José E Roybal, & Keith E. Miller. (2006). No‐discharge atmospheric pressure chemical ionization: evaluation and application to the analysis of animal drug residues in complex matrices. Rapid Communications in Mass Spectrometry. 20(8). 1231–1239. 22 indexed citations
2.
Andersen, Wendy C., Sherri B. Turnipseed, & José E Roybal. (2006). Quantitative and Confirmatory Analyses of Malachite Green and Leucomalachite Green Residues in Fish and Shrimp. Journal of Agricultural and Food Chemistry. 54(13). 4517–4523. 137 indexed citations
3.
Turnipseed, Sherri B., Wendy C. Andersen, & José E Roybal. (2005). Determination and Confirmation of Malachite Green and Leucomalachite Green Residues in Salmon Using Liquid Chromatography/Mass Spectrometry with No-Discharge Atmospheric Pressure Chemical Ionization. Journal of AOAC International. 88(5). 1312–1317. 35 indexed citations
4.
Turnipseed, Sherri B., et al.. (2003). Use of ion-trap liquid chromatography–mass spectrometry to screen and confirm drug residues in aquacultured products. Analytica Chimica Acta. 483(1-2). 373–386. 40 indexed citations
5.
Roybal, José E, Allen P Pfenning, Sherri B. Turnipseed, & Steve A Gonzales. (2003). Application of size-exclusion chromatography to the analysis of shrimp for sulfonamide residues. Analytica Chimica Acta. 483(1-2). 147–152. 13 indexed citations
6.
Turnipseed, Sherri B., José E Roybal, Heidi S Rupp, et al.. (1999). Confirmation of avermectin residues in food matrices with negative-ion atmospheric pressure chemical ionization liquid chromatography/mass spectrometry. Rapid Communications in Mass Spectrometry. 13(6). 493–499. 36 indexed citations
7.
Turnipseed, Sherri B., Calvin C Walker, José E Roybal, Allen P Pfenning, & Jeffrey A Hurlbut. (1998). Confirmation of Fluoroquinolones in Catfish Muscle by Electrospray Liquid Chromatography/Mass Spectrometry. Journal of AOAC International. 81(3). 554–562. 30 indexed citations
8.
Roybal, José E, Allen P Pfenning, Sherri B. Turnipseed, Calvin C Walker, & Jeffrey A Hurlbut. (1998). Determination off four fluoroquinolones in milk by liquid chromatography.. PubMed. 80(5). 982–7. 32 indexed citations
9.
Pfenning, Allen P, Mark R. Madson, José E Roybal, et al.. (1998). Simultaneous Determination of Chloramphenicol, Florfenicol, and Thiamphenicol Residues in Milk by Gas Chromatography with Electron Capture Detection. Journal of AOAC International. 81(4). 714–720. 40 indexed citations
10.
Roybal, José E, Allen P Pfenning, Sherri B. Turnipseed, Calvin C Walker, & Jeffrey A Hurlbut. (1997). Determination of Four Fluoroquinolones in Milk by Liquid Chromatography. Journal of AOAC International. 80(5). 982–987. 31 indexed citations
11.
Pfenning, Allen P, Sherri B. Turnipseed, José E Roybal, et al.. (1996). Determination and Confirmation of Identities of Flumequine and Nalidixic, Oxolinic, and Piromidic Acids in Salmon and Shrimp. Journal of AOAC International. 79(5). 1227–1235. 21 indexed citations
12.
Turnipseed, Sherri B., José E Roybal, Jeffrey A Hurlbut, & Austin R Long. (1995). Gas Chromatographic/Mass Spectrometric Confirmation of Leucomalachite Green in Catfish (Ictalurus punctatus) Tissue. Journal of AOAC International. 78(4). 971–977. 32 indexed citations
13.
Holland, David C, et al.. (1995). Liquid Chromatographic Determination of the Anticoccidial Drug Halofuginone Hydrobromide in Eggs. Journal of AOAC International. 78(1). 37–40. 7 indexed citations
14.
15.
Turnipseed, Sherri B., Allen P Pfenning, José E Roybal, et al.. (1995). Determination of Residues of Flumequine and Nalidixic, Oxolinic, and Piromidic Acids in Catfish by Liquid Chromatography with Fluorescence and UV Detection. Journal of AOAC International. 78(2). 343–352. 20 indexed citations
16.
17.
18.
19.
Roybal, José E, et al.. (1987). Quantitative Connrmation of Dimetridazole and Ipronidazole in Swine Feed by Capillary Gas Chromatography/Mass Spectrometry with Multiple Ion Detection. Journal of AOAC INTERNATIONAL. 70(4). 630–634. 1 indexed citations
20.
Roybal, José E, et al.. (1983). Rapid Gas-Liquid Chromatographic Method for Determination of Sulfathiazole in Swine Feed. Journal of AOAC INTERNATIONAL. 66(2). 287–290.

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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by J. A. Tarbin Breakdown of academic impact, for papers by Jeffrey A Hurlbut Breakdown of academic impact, for papers by Dominique Hurtaud‐Pessel Breakdown of academic impact, for papers by Eric Verdon Breakdown of academic impact, for papers by Jan Żmudzki Breakdown of academic impact, for papers by Allen P Pfenning Breakdown of academic impact, for papers by Harold C. Thompson Breakdown of academic impact, for papers by Mark R. Madson Breakdown of academic impact, for papers by Milan Fránek Breakdown of academic impact, for papers by Wendy C. Andersen
Rankless by CCL
2026