Philip A. Helmke
- Soil Science top 0.1%
- Pollution top 0.2%
- Plant Science top 0.5%
- Environmental Chemistry top 0.2%
- Ecology top 1%
- Co-authors
- A. L. PageM. A. TabatabaiRichard H. LoeppertP. N. SoltanpourCliff T. JohnstonM. E. SumnerDonald L. SparksKang Xia
- Topics
- Heavy metals in environment (15 papers)Planetary Science and Exploration (11 papers)Geochemistry and Elemental Analysis (10 papers)
- Partner nations
- United StatesNorwaySweden
In The Last Decade
Philip A. Helmke
51 papers receiving 9.4k citations
Hit Papers
Peers
Comparison fields: 5 of 140
- Soil Science 3.3k
- Pollution 2.4k
- Plant Science 2.2k
- Environmental Chemistry 1.9k
- Ecology 1.5k
Countries citing papers authored by Philip A. Helmke
This map shows the geographic impact of Philip A. Helmke'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 Philip A. Helmke with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Philip A. Helmke more than expected).
Fields of papers citing papers by Philip A. Helmke
This network shows the impact of papers produced by Philip A. Helmke. 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 Philip A. Helmke. The network helps show where Philip A. Helmke may publish in the future.
Co-authorship network of co-authors of Philip A. Helmke
This figure shows the co-authorship network connecting the top 25 collaborators of Philip A. Helmke. A scholar is included among the top collaborators of Philip A. Helmke 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 Philip A. Helmke. Philip A. Helmke is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
| # | Work | Indexed citations |
|---|---|---|
| 1 | 18 | |
| 2 | 67 | |
| 3 | Liming reduces cadmium uptake from soil : why doesn't it work better ? | 2 |
| 4 | 17 | |
| 5 | 82 | |
| 6 | 7 | |
| 7 | 83 | |
| 8 | 25 | |
| 9 | 114 | |
| 10 | 39 | |
| 11 | 270 | |
| 12 | 9 | |
| 13 | Major and trace element abundances in samples from the lunar highlands | 49 |
| 14 | Major and Trace Elements in Crystaline Rocks from Apollo 15 | 1 |
| 15 | 3 | |
| 16 | 20 | |
| 17 | Rare earths and other trace elements in Apollo 14 samples. | 23 |
| 18 | Rare Earths and Other Trace Elements in Apollo 12 Lunar Samples | 5 |
| 19 | Rare-earth elements in Apollo 12 lunar materials | 17 |
| 20 | Rare earths and other trace elements in Apollo 11 lunar samples | 52 |
About Philip A. Helmke
Philip A. Helmke is a scholar working on Geochemistry and Petrology, Pollution and Radiological and Ultrasound Technology, having authored 52 papers that have together received 9.8k indexed citations. Recurring topics across this work include Heavy metals in environment (15 papers), Planetary Science and Exploration (11 papers) and Geochemistry and Elemental Analysis (10 papers). The work is most often cited by research in Soil Science (3.3k citations), Pollution (2.4k citations) and Environmental Chemistry (1.9k citations). Philip A. Helmke has collaborated with scholars based in United States, Norway and Sweden. Frequent co-authors include A. L. Page, M. A. Tabatabai, Richard H. Loeppert, P. N. Soltanpour, Cliff T. Johnston, M. E. Sumner, Donald L. Sparks, Kang Xia, Howard M. May and Marion Jackson. Their work appears in journals such as Science, Journal of Geophysical Research Atmospheres and Environmental Science & Technology.
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.