John T. Leffingwell

611 total citations
16 papers, 427 citations indexed

About

John T. Leffingwell is a scholar working on Plant Science, Food Science and Pollution. According to data from OpenAlex, John T. Leffingwell has authored 16 papers receiving a total of 427 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Plant Science, 5 papers in Food Science and 3 papers in Pollution. Recurrent topics in John T. Leffingwell's work include Pesticide Residue Analysis and Safety (4 papers), Pesticide Exposure and Toxicity (4 papers) and Pesticide and Herbicide Environmental Studies (3 papers). John T. Leffingwell is often cited by papers focused on Pesticide Residue Analysis and Safety (4 papers), Pesticide Exposure and Toxicity (4 papers) and Pesticide and Herbicide Environmental Studies (3 papers). John T. Leffingwell collaborates with scholars based in United States and Canada. John T. Leffingwell's co-authors include Robert C. Spear, Richard A. Fenske, William Popendorf, GUNTER ZWEIG, Claire A. Franklin, Laurence Mathieu, R. Greenhalgh, Thomas H. Milby, John E. Davies and W. F. Spencer and has published in prestigious journals such as Journal of Agricultural and Food Chemistry, Archives of Environmental Contamination and Toxicology and Journal of Occupational and Environmental Medicine.

In The Last Decade

John T. Leffingwell

16 papers receiving 392 citations

Peers

John T. Leffingwell

PS

IS

FS

POLLU

HTM

Graham Chester United Kingdom

J. F. Armstrong United States

J. H. Stamper United States

Liana Lunghini Italy

Karl-Heinz Kühn Germany

Paul Y. Hamey United Kingdom

Agathi Charistou Greece

G. Bouvier France

Arianna Chiusolo Italy

Anne R. Yobs United States

Graham Chester United Kingdom

John T. Leffingwell

290 ×0.9

PS

87 ×0.8

IS

75 ×0.7

FS

67 ×0.7

POLLU

63 ×0.8

HTM

Citations per year, relative to John T. Leffingwell John T. Leffingwell (= 1×) peers Graham Chester

Countries citing papers authored by John T. Leffingwell

Since Specialization

Citations

This map shows the geographic impact of John T. Leffingwell'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 John T. Leffingwell with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John T. Leffingwell more than expected).

Fields of papers citing papers by John T. Leffingwell

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John T. Leffingwell. 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 John T. Leffingwell. The network helps show where John T. Leffingwell may publish in the future.

Co-authorship network of co-authors of John T. Leffingwell

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

All Works

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16 of 16 papers shown

1.

Fenske, Richard A. & John T. Leffingwell. (1989). Method for the determination of dialkyl phosphate metabolites in urine for studies of human exposure to malathion. Journal of Agricultural and Food Chemistry. 37(4). 995–998. 35 indexed citations

2.

Fenske, Richard A., et al.. (1986). A Video Imaging Technique for Assessing Dermal Exposure II. Fluorescent Tracer Testing. American Industrial Hygiene Association Journal. 47(12). 771–775. 1 indexed citations

3.

Fenske, Richard A., John T. Leffingwell, & Robert C. Spear. (1986). A Video Imaging Technique for Assessing Dermal Exposure I. Instrument Design and Testing. American Industrial Hygiene Association Journal. 47(12). 764–770. 46 indexed citations

4.

Fenske, Richard A., et al.. (1986). A Video Imaging Technique for Assessing Dermal Exposure II. Fluorescent Tracer Testing. American Industrial Hygiene Association Journal. 47(12). 771–775. 46 indexed citations

5.

Fenske, Richard A., John T. Leffingwell, & Robert C. Spear. (1986). A Video Imaging Technique for Assessing Dermal Exposure I. Instrument Design and Testing. American Industrial Hygiene Association Journal. 47(12). 764–770. 2 indexed citations

6.

ZWEIG, GUNTER, et al.. (1985). The relationship between dermal pesticide exposure by fruit harvesters and dislodgeable foliar residues. Journal of Environmental Science and Health Part B. 20(1). 27–59. 52 indexed citations

7.

Popendorf, William & John T. Leffingwell. (1982). Regulating OP pesticide residues for farmworker protection. PubMed. 82. 125–201. 64 indexed citations

8.

Franklin, Claire A., Richard A. Fenske, R. Greenhalgh, et al.. (1981). Correlation of urinary pesticide metabolite excretion with estimated dermal contact in the course of occupational exposure to guthion. Journal of Toxicology and Environmental Health. 7(5). 715–731. 69 indexed citations

9.

Spear, Robert C., et al.. (1978). Conversion of parathion to paraoxon in foliar residues: effects of dust level and ozone concentration. Journal of Agricultural and Food Chemistry. 26(2). 434–436. 11 indexed citations

10.

Popendorf, William & John T. Leffingwell. (1978). Natural variations in the decay and oxidation of parathion foliar residues. Journal of Agricultural and Food Chemistry. 26(2). 437–441. 14 indexed citations

11.

Leffingwell, John T., et al.. (1977). Loss of paraoxon in aqueous acetonitrile extractions. Bulletin of Environmental Contamination and Toxicology. 18(2). 247–250. 3 indexed citations

12.

Leffingwell, John T., et al.. (1977). A field survey of dislodgeable zolone residues in twelve commercially treated vineyards. Bulletin of Environmental Contamination and Toxicology. 18(2). 219–226. 3 indexed citations

13.

Spear, Robert C., William Popendorf, John T. Leffingwell, et al.. (1977). Fieldworkers?? Response to Weathered Residues of Parathion. Journal of Occupational and Environmental Medicine. 19(6). 406–410. 43 indexed citations

14.

Popendorf, William & John T. Leffingwell. (1977). Procedures for the determination of dislodgeable dust on foliage as related to worker reentry hazards. Bulletin of Environmental Contamination and Toxicology. 18(6). 787–788. 5 indexed citations

15.

Spear, Robert C., et al.. (1975). Parathion residues on citrus foliage. Decay and composition as related to worker hazard. Journal of Agricultural and Food Chemistry. 23(4). 808–810. 18 indexed citations

16.

Leffingwell, John T., Robert C. Spear, & David Jenkins. (1975). The persistence of ethion and Zolone residues on grape foliage in the central valley of California. Archives of Environmental Contamination and Toxicology. 3(1). 40–54. 15 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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