L. L. Needham

1.8k total citations · 1 hit paper
22 papers, 1.5k citations indexed

About

L. L. Needham is a scholar working on Health, Toxicology and Mutagenesis, Cancer Research and Molecular Biology. According to data from OpenAlex, L. L. Needham has authored 22 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Health, Toxicology and Mutagenesis, 8 papers in Cancer Research and 7 papers in Molecular Biology. Recurrent topics in L. L. Needham's work include Carcinogens and Genotoxicity Assessment (7 papers), Effects and risks of endocrine disrupting chemicals (6 papers) and Toxic Organic Pollutants Impact (6 papers). L. L. Needham is often cited by papers focused on Carcinogens and Genotoxicity Assessment (7 papers), Effects and risks of endocrine disrupting chemicals (6 papers) and Toxic Organic Pollutants Impact (6 papers). L. L. Needham collaborates with scholars based in United States, China and Taiwan. L. L. Needham's co-authors include Eric J. Sampson, George W. Lucier, Samuel P. Caudill, John W. Brock, Benjamin C. Blount, James L. Pirkle, Richard J. Jackson, David Patterson, L. Omar Henderson and Vincent L. Maggio and has published in prestigious journals such as Science, The Lancet and Journal of Clinical Investigation.

In The Last Decade

L. L. Needham

22 papers receiving 1.4k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Levels of seven urinary phthalate metabolites in a human reference population.

2000 521 citations Benjamin C. Blount, Samuel P. Caudill et al. Environmental Health Perspectives profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
L. L. Needham United States	14	881	362	317	243	112	22	1.5k
R R Miller United States	20	366 0.4×	507 1.4×	268 0.8×	78 0.3×	32 0.3×	38	1.5k
William M. Kluwe United States	26	746 0.8×	402 1.1×	459 1.4×	33 0.1×	112 1.0×	67	2.0k
N J van Sittert Netherlands	19	622 0.7×	713 2.0×	196 0.6×	68 0.3×	82 0.7×	34	1.2k
Junya Nagayama Japan	20	879 1.0×	434 1.2×	78 0.2×	43 0.2×	79 0.7×	70	1.2k
Subbarao V. Kala United States	20	367 0.4×	94 0.3×	612 1.9×	52 0.2×	46 0.4×	28	1.6k
Douglas Β. Tully United States	18	504 0.6×	157 0.4×	383 1.2×	23 0.1×	154 1.4×	25	1.4k
Daniel W. Sepkovic United States	27	352 0.4×	257 0.7×	712 2.2×	43 0.2×	28 0.3×	69	2.3k
R L Melnick United States	19	487 0.6×	493 1.4×	316 1.0×	38 0.2×	45 0.4×	29	1.1k
Masayoshi Ichiba Japan	21	456 0.5×	483 1.3×	502 1.6×	23 0.1×	51 0.5×	70	1.2k
Kirsti Savela Finland	19	507 0.6×	554 1.5×	368 1.2×	42 0.2×	83 0.7×	36	1.0k

Countries citing papers authored by L. L. Needham

Since Specialization

Citations

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

Fields of papers citing papers by L. L. Needham

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of L. L. Needham

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

All Works

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20 of 20 papers shown

Kuklenyik, Zsuzsanna, et al.. (2004). Automated Online and Off-Line Solid-Phase Extraction Methods for Measuring Isoflavones and Lignans in Urine. Journal of Chromatographic Science. 42(9). 495–500. 26 indexed citations

Brock, John W., et al.. (2002). Phthalate Monoesters Levels in the Urine of Young Children. Bulletin of Environmental Contamination and Toxicology. 68(3). 309–314. 7 indexed citations

Goldman, Lynn R., Martha Harnly, Jennifer Flattery, D. Patterson, & L. L. Needham. (2000). Serum polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans among people eating contaminated home-produced eggs and beef.. Environmental Health Perspectives. 108(1). 13–19. 35 indexed citations

Barr, Dana Boyd, John R. Barr, Sandra L. Bailey, et al.. (2000). Levels of methyleugenol in a subset of adults in the general U.S. population as determined by high resolution mass spectrometry.. Environmental Health Perspectives. 108(4). 323–328. 17 indexed citations

Blount, Benjamin C., Samuel P. Caudill, L. L. Needham, et al.. (2000). Levels of seven urinary phthalate metabolites in a human reference population.. Environmental Health Perspectives. 108(10). 979–982. 521 indexed citations breakdown →

Landi, M. T., Dario Consonni, D. Patterson, et al.. (1998). 2,3,7,8-Tetrachlorodibenzo-p-dioxin plasma levels in Seveso 20 years after the accident.. Environmental Health Perspectives. 106(5). 273–277. 66 indexed citations

Barnhart, Elizabeth R., Vincent L. Maggio, Louis Alexander, et al.. (1996). Analytical characterization of peptide contaminants of L-tryptophan. Archives of Environmental Contamination and Toxicology. 30(1). 142–148. 1 indexed citations

Barr, John R., Vincent L. Maggio, David Patterson, et al.. (1996). Isotope dilution--mass spectrometric quantification of specific proteins: model application with apolipoprotein A-I. Clinical Chemistry. 42(10). 1676–1682. 282 indexed citations

Hill, Robert H., S.L. Head, C. C. Williams, et al.. (1995). Determination of Pesticide Metabolites in Human Urine Using an Isotope Dilution Technique and Tandem Mass Spectrometry. Journal of Analytical Toxicology. 19(5). 323–329. 78 indexed citations

10.

Johnson, E. S., D Shore, D. G. Patterson, & L. L. Needham. (1994). Serum Levels of 2,3,7,8- Tetrachlorodibenzo-p-dioxin in Phenoxy Herbicide Sprayers. JNCI Journal of the National Cancer Institute. 86(11). 866–868. 1 indexed citations

11.

Smith, A. H., David Patterson, M. L. Warner, Richard Mackenzie, & L. L. Needham. (1992). Serum 2,3,7,8-Tetrachloro-dibenzo-p-dioxin Levels of New Zealand Pesticide Applicators and Their Implication for Cancer Hypotheses. JNCI Journal of the National Cancer Institute. 84(2). 104–108. 29 indexed citations

12.

Patterson, Donald G., et al.. (1991). Determination of specific polychlorinated dibenzo-p-dioxins and dibenzofurans in blood and adipose tissue by isotope dilution-high-resolution mass spectrometry.. PubMed. 299–342. 40 indexed citations

13.

Crofford, Leslie J., Jeanne I. Rader, Marinos C. Dalakas, et al.. (1990). L-tryptophan implicated in human eosinophilia-myalgia syndrome causes fasciitis and perimyositis in the Lewis rat.. Journal of Clinical Investigation. 86(5). 1757–1763. 82 indexed citations

14.

Patterson, David, et al.. (1989). Analysis of human serum for PCDDs/PCDFs: A comparison of three extraction procedures. Chemosphere. 19(1-6). 89–96. 13 indexed citations

15.

Patterson, David, et al.. (1989). Partitioning of in vivo bound PCDDs/PCDFs among various compartments in whole blood. Chemosphere. 19(1-6). 135–142. 53 indexed citations

16.

Patterson, D. G., L. L. Needham, David W. Roberts, et al.. (1988). Correlation between serum and adipose tissue levels of 2,3,7,8-tetrachlorodibenzo-p-dioxin in 50 persons from Missouri. Archives of Environmental Contamination and Toxicology. 17(2). 139–143. 119 indexed citations

17.

Patterson, David, et al.. (1987). Determination of 2,3,7,8-tetrachlorodibenzo- -dioxin (TCDD) in human adipose tissue on whole-weight and lipid bases. Chemosphere. 16(5). 935–936. 12 indexed citations

18.

Patterson, David, James S. Holler, Stuart J. Smith, et al.. (1986). Human adipose data for 2,3,7,8-tetrachlorodibenzo-p-dioxin in certain U.S. samples. Chemosphere. 15(9-12). 2055–2060. 39 indexed citations

19.

Needham, L. L., et al.. (1983). Design and Demonstration of a Quality Assurance Program for Labor-Intensive Analytical Systems. Journal of Analytical Toxicology. 7(6). 279–282. 8 indexed citations

20.

Patterson, D. G., et al.. (1981). Hyperkeratosis Induced by Sunlight Degradation Products of the Major Polybrominated Biphenyl in Firemaster. Science. 213(4510). 901–902. 12 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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