Carlos Almeida

795 total citations
25 papers, 642 citations indexed

About

Carlos Almeida is a scholar working on Analytical Chemistry, Pollution and Food Science. According to data from OpenAlex, Carlos Almeida has authored 25 papers receiving a total of 642 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Analytical Chemistry, 7 papers in Pollution and 6 papers in Food Science. Recurrent topics in Carlos Almeida's work include Analytical chemistry methods development (13 papers), Pharmaceutical and Antibiotic Environmental Impacts (6 papers) and Analytical Chemistry and Chromatography (5 papers). Carlos Almeida is often cited by papers focused on Analytical chemistry methods development (13 papers), Pharmaceutical and Antibiotic Environmental Impacts (6 papers) and Analytical Chemistry and Chromatography (5 papers). Carlos Almeida collaborates with scholars based in Portugal, Tunisia and Mexico. Carlos Almeida's co-authors include J.M.F. Nogueira, Samir M. Ahmad, Nuno R. Neng, Ridha El Mokni, Maria Eduarda Araújo, Ayda Khadhri, Sandra Gonçalves, Patrı́cia Valentão, Anabela Romano and Patrícia Costa and has published in prestigious journals such as SHILAP Revista de lepidopterología, Food Chemistry and Journal of Chromatography A.

In The Last Decade

Carlos Almeida

23 papers receiving 628 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Carlos Almeida Portugal 13 370 211 171 144 101 25 642
Natividad Ramos Martos Spain 12 318 0.9× 148 0.7× 85 0.5× 198 1.4× 66 0.7× 19 535
Lúcio Flávio Costa Melo Brazil 8 363 1.0× 221 1.0× 145 0.8× 281 2.0× 120 1.2× 12 928
Álvaro Santana‐Mayor Spain 15 410 1.1× 201 1.0× 98 0.6× 185 1.3× 157 1.6× 29 828
Peter Hancock United Kingdom 12 267 0.7× 243 1.2× 105 0.6× 285 2.0× 84 0.8× 17 616
Octavio Malato Spain 11 291 0.8× 207 1.0× 270 1.6× 317 2.2× 159 1.6× 11 828
Nazir Fattahi Iran 19 511 1.4× 210 1.0× 143 0.8× 140 1.0× 148 1.5× 43 850
Marta Pastor‐Belda Spain 19 307 0.8× 154 0.7× 109 0.6× 166 1.2× 187 1.9× 39 816
Araceli Peña‐Álvarez Mexico 18 207 0.6× 131 0.6× 130 0.8× 172 1.2× 82 0.8× 33 769
Virginia Pérez‐Fernández Italy 17 212 0.6× 321 1.5× 121 0.7× 141 1.0× 71 0.7× 30 765
Marcelo Ribani Brazil 9 297 0.8× 122 0.6× 156 0.9× 280 1.9× 131 1.3× 15 1.0k

Countries citing papers authored by Carlos Almeida

Since Specialization
Citations

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

Fields of papers citing papers by Carlos Almeida

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Carlos Almeida. 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 Carlos Almeida. The network helps show where Carlos Almeida may publish in the future.

Co-authorship network of co-authors of Carlos Almeida

This figure shows the co-authorship network connecting the top 25 collaborators of Carlos Almeida. A scholar is included among the top collaborators of Carlos Almeida 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 Carlos Almeida. Carlos Almeida 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
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2.
Almeida, Carlos, Nuno R. Neng, J.M.F. Nogueira, & Joana Ruivo. (2024). Application of a bar adsorptive microextraction based methodology for doping control of alkylamine stimulants in urine matrices. Journal of Chromatography B. 1234. 124006–124006. 3 indexed citations
3.
Carvalho, María do Rosário, et al.. (2022). Long Term Effectiveness of Wellhead Protection Areas. Water. 14(7). 1063–1063. 1 indexed citations
4.
Almeida, Carlos, Samir M. Ahmad, & J.M.F. Nogueira. (2017). Bar adsorptive microextraction technique - application for the determination of pharmaceuticals in real matrices. Analytical and Bioanalytical Chemistry. 409(8). 2093–2106. 15 indexed citations
5.
Almeida, Carlos, et al.. (2017). Application of polyurethane-based devices as sorption-desorption phases for microextraction analysis – The all-in-one microextraction concept. Journal of Chromatography A. 1485. 1–7. 4 indexed citations
6.
Ahmad, Samir M., et al.. (2016). Determination of Trace Levels of Irgarol in Estuarine Water Matrices by Bar Adsorptive Microextraction. Journal of Chromatographic Science. 54(8). 1453–1459. 1 indexed citations
7.
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Ahmad, Samir M., Carlos Almeida, Nuno R. Neng, & J.M.F. Nogueira. (2014). Application of bar adsorptive microextraction (BAμE) for anti-doping control screening of anabolic steroids in urine matrices. Journal of Chromatography B. 969. 35–41. 18 indexed citations
9.
Almeida, Carlos & J.M.F. Nogueira. (2014). Determination of trace levels of parabens in real matrices by bar adsorptive microextraction using selective sorbent phases. Journal of Chromatography A. 1348. 17–26. 47 indexed citations
10.
Almeida, Carlos & J.M.F. Nogueira. (2014). Determination of steroid sex hormones in real matrices by bar adsorptive microextraction (BAμE). Talanta. 136. 145–154. 39 indexed citations
11.
Khadhri, Ayda, Intidhar Bouali, Ridha El Mokni, et al.. (2014). Chemical Variability of Two Essential Oils of Tunisian Rue:Ruta montanaandRuta chalepensis. Journal of Essential Oil Bearing Plants. 17(3). 445–451. 12 indexed citations
12.
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Khadhri, Ayda, Ridha El Mokni, Carlos Almeida, J.M.F. Nogueira, & Maria Eduarda Araújo. (2013). Chemical composition of essential oil of Psidium guajava L. growing in Tunisia. Industrial Crops and Products. 52. 29–31. 42 indexed citations
14.
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Costa, Patrícia, Sandra Gonçalves, Patrı́cia Valentão, et al.. (2013). Metabolic profile and biological activities of Lavandula pedunculata subsp. lusitanica (Chaytor) Franco: Studies on the essential oil and polar extracts. Food Chemistry. 141(3). 2501–2506. 52 indexed citations
16.
Almeida, Carlos & J.M.F. Nogueira. (2012). Comparison of the selectivity of different sorbent phases for bar adsorptive microextraction—Application to trace level analysis of fungicides in real matrices. Journal of Chromatography A. 1265. 7–16. 51 indexed citations
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Almeida, Carlos & J.M.F. Nogueira. (2006). Determination of steroid sex hormones in water and urine matrices by stir bar sorptive extraction and liquid chromatography with diode array detection. Journal of Pharmaceutical and Biomedical Analysis. 41(4). 1303–1311. 176 indexed citations
19.
Gonçalves, Mário A., J.M.F. Nogueira, Jorge Figueiras, Christine V. Putnis, & Carlos Almeida. (2003). Base-metals and organic content in stream sediments in the vicinity of a landfill. Applied Geochemistry. 19(1). 137–151. 16 indexed citations
20.
Alberich, María Vicenta Esteller, Ignacio Morell, & Carlos Almeida. (2001). Physico-chemical processes in a vadose zone during the infiltration of treated wastewater used for irrigation: application of the NETPATH model. Environmental Geology. 40(7). 923–930. 5 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Natividad Ramos Martos Breakdown of academic impact, for papers by Lúcio Flávio Costa Melo Breakdown of academic impact, for papers by Álvaro Santana‐Mayor Breakdown of academic impact, for papers by Peter Hancock Breakdown of academic impact, for papers by Octavio Malato Breakdown of academic impact, for papers by Nazir Fattahi Breakdown of academic impact, for papers by Marta Pastor‐Belda Breakdown of academic impact, for papers by Araceli Peña‐Álvarez Breakdown of academic impact, for papers by Virginia Pérez‐Fernández Breakdown of academic impact, for papers by Marcelo Ribani
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2026