P. A. St. John

597 total citations
15 papers, 405 citations indexed

About

P. A. St. John is a scholar working on Spectroscopy, Bioengineering and Electrochemistry. According to data from OpenAlex, P. A. St. John has authored 15 papers receiving a total of 405 indexed citations (citations by other indexed papers that have themselves been cited), including 5 papers in Spectroscopy, 3 papers in Bioengineering and 3 papers in Electrochemistry. Recurrent topics in P. A. St. John's work include Electrochemical Analysis and Applications (3 papers), Analytical Chemistry and Sensors (3 papers) and Mass Spectrometry Techniques and Applications (3 papers). P. A. St. John is often cited by papers focused on Electrochemical Analysis and Applications (3 papers), Analytical Chemistry and Sensors (3 papers) and Mass Spectrometry Techniques and Applications (3 papers). P. A. St. John collaborates with scholars based in United States. P. A. St. John's co-authors include J. D. Winefordner, Wayne S. Gardner, William J. McCarthy, H. Anson Moye, Harvey A. Bootsma, Christine Evans, R. H. Biggs, Lynn R. Herche, Sybil P. Seitzinger and W. S. Silver and has published in prestigious journals such as Analytical Chemistry, Analytical Biochemistry and Analytica Chimica Acta.

In The Last Decade

P. A. St. John

15 papers receiving 314 citations

Peers

P. A. St. John

SPECT

OCEAN

ECOLO

Emory W. Sarver United States

L. V. Azarraga United States

James F. Ryan United States

Heinrich Kaiser Germany

Paul M. Gates United States

Ludvig Moberg Sweden

C. E. Jones United Kingdom

Steven D. Fazio United States

Harry F. Prest United States

Milan Hutta Slovakia

Emory W. Sarver United States

P. A. St. John

149 ×1.1

SPECT

56 ×0.6

92 ×1.4

OCEAN

42 ×0.7

ECOLO

65 ×1.1

Citations per year, relative to P. A. St. John P. A. St. John (= 1×) peers Emory W. Sarver

Countries citing papers authored by P. A. St. John

Since Specialization

Citations

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

Fields of papers citing papers by P. A. St. John

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by P. A. St. John. 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 P. A. St. John. The network helps show where P. A. St. John may publish in the future.

Co-authorship network of co-authors of P. A. St. John

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

All Works

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15 of 15 papers shown

Gardner, Wayne S., Harvey A. Bootsma, Christine Evans, & P. A. St. John. (1995). Improved chromatographic analysis of 15N:14N ratios in ammonium or nitrate for isotope addition experiments. Marine Chemistry. 48(3-4). 271–282. 54 indexed citations

Gardner, Wayne S., Lynn R. Herche, P. A. St. John, & Sybil P. Seitzinger. (1991). High-performance liquid chromatographic determination of nitrogen-15 to nitrogen-14 plus nitrogen-15 ammonium ion ratios in sea water for isotope dilution experiments. Analytical Chemistry. 63(17). 1838–1843. 21 indexed citations

Gardner, Wayne S. & P. A. St. John. (1991). High-performance liquid chromatographic method to determine ammonium ion and primary amines in seawater. Analytical Chemistry. 63(5). 537–540. 41 indexed citations

Moye, H. Anson, et al.. (1977). Dynamic Fluorogenic Labelling of Pesticides for High Performance Liquid Chromatography: Detection of N-Methylcarbamates with o-Phthalaldehyde. Analytical Letters. 10(13). 1049–1073. 73 indexed citations

John, P. A. St., et al.. (1973). Flame spectrometric determination of sodium, potassium and calcium in blood serum by measurement of microsamples. Microchimica Acta. 61(4). 523–531. 17 indexed citations

John, P. A. St., et al.. (1972). Measurement of microsamples in atomic emission and atomic fluorescence flame spectrometry. Microchimica Acta. 60(1). 55–64. 10 indexed citations

McCarthy, William J., J. D. Winefordner, & P. A. St. John. (1967). The selection of optimum conditions for spectrochemical methods. 1. Use of signal-to-noise ratio theory. Journal of Chemical Education. 44(2). 80–80. 21 indexed citations

John, P. A. St., William J. McCarthy, & J. D. Winefordner. (1967). A statistical method for evaluation of limiting detectable sample concentrations. Analytical Chemistry. 39(12). 1495–1497. 52 indexed citations

Winefordner, J. D., William J. McCarthy, & P. A. St. John. (1967). Phosphorimetry as an Analytical Approach in Biochemistry. Methods of biochemical analysis. 15. 369–483. 14 indexed citations

10.

John, P. A. St., et al.. (1967). Spectrophosphorimetry of several indole derivatives. Analytical Biochemistry. 18(3). 459–463. 10 indexed citations

11.

John, P. A. St. & J. D. Winefordner. (1967). Time-resolved phosphorimetry as a method of simultaneous analysis of two-component mixtures. Analytical Chemistry. 39(4). 500–503. 20 indexed citations

12.

Biggs, R. H., et al.. (1967). Gas chromatography of several indole derivatives. Analytical Biochemistry. 18(3). 453–458. 14 indexed citations

13.

John, P. A. St., William J. McCarthy, & J. D. Winefordner. (1966). Applications of signal-to-noise theory in molecular luminescence spectrometry. Analytical Chemistry. 38(13). 1828–1835. 24 indexed citations

14.

John, P. A. St., J. D. Winefordner, & W. S. Silver. (1964). Microdetermination of dissolved oxygen in water by a rapid spectrophotometric method. Analytica Chimica Acta. 30. 49–55. 7 indexed citations

15.

Winefordner, J. D. & P. A. St. John. (1963). Solvents for Phosphorimetry.. Analytical Chemistry. 35(13). 2211–2212. 27 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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