Masahiko Numata

1.2k total citations
88 papers, 975 citations indexed

About

Masahiko Numata is a scholar working on Health, Toxicology and Mutagenesis, Spectroscopy and Analytical Chemistry. According to data from OpenAlex, Masahiko Numata has authored 88 papers receiving a total of 975 indexed citations (citations by other indexed papers that have themselves been cited), including 31 papers in Health, Toxicology and Mutagenesis, 30 papers in Spectroscopy and 27 papers in Analytical Chemistry. Recurrent topics in Masahiko Numata's work include Analytical Chemistry and Chromatography (28 papers), Toxic Organic Pollutants Impact (26 papers) and Analytical chemistry methods development (23 papers). Masahiko Numata is often cited by papers focused on Analytical Chemistry and Chromatography (28 papers), Toxic Organic Pollutants Impact (26 papers) and Analytical chemistry methods development (23 papers). Masahiko Numata collaborates with scholars based in Japan, United States and China. Masahiko Numata's co-authors include Takashi Yarita, Yoshie Aoyagi, Akiko Takatsu, Nobuyasu Itoh, Noboru Nakamura, Takamitsu Otake, Shinsuke Inagaki, Nobuyasu Hanari, Taichi Yamazaki and Keiichiro Ishikawa and has published in prestigious journals such as Environmental Science & Technology, Analytical Chemistry and Journal of Agricultural and Food Chemistry.

In The Last Decade

Masahiko Numata

84 papers receiving 927 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Masahiko Numata Japan 18 297 289 250 203 148 88 975
Claude Schummer Luxembourg 18 266 0.9× 352 1.2× 170 0.7× 178 0.9× 125 0.8× 23 1.0k
Farhad Raofie Iran 21 282 0.9× 562 1.9× 131 0.5× 202 1.0× 197 1.3× 52 1.3k
L. Bartolomé Spain 21 283 1.0× 433 1.5× 212 0.8× 119 0.6× 156 1.1× 39 1.2k
Rochele S. Picoloto Brazil 23 663 2.2× 277 1.0× 201 0.8× 146 0.7× 143 1.0× 53 1.2k
Takashi Yarita Japan 20 539 1.8× 343 1.2× 521 2.1× 347 1.7× 245 1.7× 101 1.4k
Francesca Buiarelli Italy 23 214 0.7× 498 1.7× 195 0.8× 332 1.6× 132 0.9× 81 1.5k
Rudolph C. Johnson United States 26 229 0.8× 355 1.2× 443 1.8× 140 0.7× 221 1.5× 89 1.9k
L.V. Pérez-Arribas Spain 19 427 1.4× 150 0.5× 344 1.4× 178 0.9× 201 1.4× 56 1.0k
N. V. Ul’yanovskii Russia 21 276 0.9× 318 1.1× 288 1.2× 169 0.8× 349 2.4× 102 1.2k
J. E. Conde Spain 16 280 0.9× 192 0.7× 135 0.5× 348 1.7× 141 1.0× 36 957

Countries citing papers authored by Masahiko Numata

Since Specialization
Citations

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

Fields of papers citing papers by Masahiko Numata

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Masahiko Numata

This figure shows the co-authorship network connecting the top 25 collaborators of Masahiko Numata. A scholar is included among the top collaborators of Masahiko Numata 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 Masahiko Numata. Masahiko Numata 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.
Numata, Masahiko, et al.. (2020). Use of Relative Molar Sensitivity as a Specific Value for Evaluating Heptaoxyethylene Dodecyl Ether Concentrations in Methanol Solution. Analytical Sciences. 37(6). 917–919. 2 indexed citations
2.
Numata, Masahiko, Yoshitaka Shimizu, Taichi Yamazaki, et al.. (2019). Conventional and new traceability schemes of organic standards for safe water supply in Japan. Metrologia. 56(3). 34002–34002. 5 indexed citations
3.
Inagaki, Shinsuke, et al.. (2019). Characterization of water in methylcyclohexane as a certified reference material for determination of trace water content in liquids. Metrologia. 56(3). 34004–34004. 4 indexed citations
4.
Saito, Takeshi, Taichi Yamazaki, & Masahiko Numata. (2019). Development of nuclear magnetic resonance as a tool of quantitative analysis for organic materials. Metrologia. 56(5). 54002–54002. 11 indexed citations
5.
Huang, Ting, Hongmei Li, Wei Zhang, et al.. (2019). Advanced approaches and applications of qNMR. Metrologia. 57(1). 14004–14004. 12 indexed citations
6.
Lippa, Katrice A., Lindsey G. Mackay, Qinde Liu, et al.. (2019). Enhancing the accuracy of measurement of small molecule organic biomarkers. Analytical and Bioanalytical Chemistry. 411(28). 7341–7355. 8 indexed citations
7.
Nishizaki, Yuzo, Koichi Nakashima, Taichi Yamazaki, et al.. (2018). HPLC/PDA determination of carminic acid and 4-aminocarminic acid using relative molar sensitivities with respect to caffeine. Food Additives & Contaminants Part A. 35(5). 838–847. 17 indexed citations
8.
Otake, Takamitsu, Takashi Yarita, Yoshie Aoyagi, Masahiko Numata, & Akiko Takatsu. (2014). Evaluation of the performance of 57 Japanese participating laboratories by two types of z-scores in proficiency test for the quantification of pesticide residues in brown rice. Analytical and Bioanalytical Chemistry. 406(28). 7337–7344. 14 indexed citations
9.
Hanari, Nobuyasu, Nobuyasu Itoh, Keiichiro Ishikawa, Takashi Yarita, & Masahiko Numata. (2013). Variation in concentration of perfluorooctanoic acid in methanol solutions during storage. Chemosphere. 94. 116–120. 12 indexed citations
10.
Inagaki, Shinsuke, et al.. (2012). Characterization of Certified Reference Material for the Quantification of Water in Bioethanol. Analytical Sciences. 28(11). 1089–1095. 13 indexed citations
11.
12.
Yamashita, Katsuyuki, et al.. (2010). Measurement of chlorine stable isotopic composition by negative thermal ionization mass spectrometry using total evaporation technique. GEOCHEMICAL JOURNAL. 44(3). 241–246. 4 indexed citations
13.
Nakamura, Noboru, L. E. Nyquist, Y. Reese, et al.. (2009). Chlorine Isotopes: As a Possible Tracer of Fluid/Bio-Activities on Mars and a Progress Report on Chlorine Isotope Analysis by TIMs. NASA STI Repository (National Aeronautics and Space Administration). 1946. 2 indexed citations
14.
Itoh, Nobuyasu, et al.. (2008). Differences in the Yields of Polycyclic Aromatic Hydrocarbons by Pressurized Liquid Extraction and the Japanese Official Method. Analytical Sciences. 24(9). 1129–1133. 4 indexed citations
15.
Itoh, Nobuyasu, Masahiko Numata, Yoshie Aoyagi, & Takashi Yarita. (2008). Comparison of low-level polycyclic aromatic hydrocarbons in sediment revealed by Soxhlet extraction, microwave-assisted extraction, and pressurized liquid extraction. Analytica Chimica Acta. 612(1). 44–52. 47 indexed citations
16.
Itoh, Nobuyasu, Masahiko Numata, & Takashi Yarita. (2007). Evaluation of Behavioral Differences between Native Polycyclic Aromatic Hydrocarbons and 13C-Labeled Internal Standards during Clean-up Steps of Analysis. Analytical Sciences. 23(10). 1245–1248. 9 indexed citations
17.
Itoh, Nobuyasu, Masahiko Numata, Yoshie Aoyagi, & Takashi Yarita. (2006). Comparison of the behavior of 13C- and deuterium-labeled polycyclic aromatic hydrocarbons in analyses by isotope dilution mass spectrometry in combination with pressurized liquid extraction. Journal of Chromatography A. 1138(1-2). 26–31. 24 indexed citations
18.
Numata, Masahiko, et al.. (2004). Investigation of saponification for determination of polychlorinated biphenyls in marine sediments. Chemosphere. 58(7). 865–875. 16 indexed citations
19.
Numata, Masahiko, et al.. (1999). Degradation of Tetrachloroethene and Trichloroethene by Immobilized Anaerobic and Aerobic Microorganisms.. Journal of Japan Society on Water Environment. 22(6). 479–484. 1 indexed citations
20.
Numata, Masahiko, et al.. (1999). Continuous Degradation of Tetrachloroethene by a Two-Stage Anaerobic/Aerobic Bioreactor System.. Journal of Japan Society on Water Environment. 22(6). 485–490. 1 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.

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