N.P. Ratnayake

1.5k total citations · 1 hit paper
54 papers, 1.2k citations indexed

About

N.P. Ratnayake is a scholar working on Geochemistry and Petrology, Atmospheric Science and Mechanical Engineering. According to data from OpenAlex, N.P. Ratnayake has authored 54 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Geochemistry and Petrology, 14 papers in Atmospheric Science and 12 papers in Mechanical Engineering. Recurrent topics in N.P. Ratnayake's work include Geochemistry and Elemental Analysis (13 papers), Geology and Paleoclimatology Research (12 papers) and Extraction and Separation Processes (12 papers). N.P. Ratnayake is often cited by papers focused on Geochemistry and Elemental Analysis (13 papers), Geology and Paleoclimatology Research (12 papers) and Extraction and Separation Processes (12 papers). N.P. Ratnayake collaborates with scholars based in Sri Lanka, Malaysia and Japan. N.P. Ratnayake's co-authors include Nimila Dushyantha, Ranjith Premasiri, Kithsiri Dissanayake, I.M.S.K. Ilankoon, Bandara Abeysinghe, Nadeera Batapola, Amila Sandaruwan Ratnayake, Sudath Rohitha, Yoshikazu Sampei and Noriyuki Suzuki and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of Cleaner Production and Chemical Geology.

In The Last Decade

N.P. Ratnayake

49 papers receiving 1.1k citations

Hit Papers

The story of rare earth elements (REEs): Occurrences, glo... 2020 2026 2022 2024 2020 100 200 300 400
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.

  1. The story of rare earth elements (REEs): Occurrences, global distribution, genesis, geology, mineralogy and global production
    2020 476 citations Nimila Dushyantha, Nadeera Batapola et al. profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
N.P. Ratnayake Sri Lanka 16 401 376 177 174 161 54 1.2k
Andreas Dahmke Germany 26 267 0.7× 313 0.8× 51 0.3× 250 1.4× 157 1.0× 102 2.3k
Maoyong He China 22 111 0.3× 389 1.0× 48 0.3× 219 1.3× 137 0.9× 79 1.2k
Nimila Dushyantha Sri Lanka 12 430 1.1× 354 0.9× 76 0.4× 30 0.2× 50 0.3× 38 901
Andre Baldermann Austria 29 106 0.3× 426 1.1× 229 1.3× 337 1.9× 49 0.3× 85 2.4k
Chongguang Luo China 17 200 0.5× 432 1.1× 28 0.2× 114 0.7× 104 0.6× 41 1.0k
Georg J. Houben Germany 23 223 0.6× 542 1.4× 83 0.5× 85 0.5× 49 0.3× 74 1.3k
Debra Phillips United Kingdom 24 134 0.3× 189 0.5× 89 0.5× 57 0.3× 227 1.4× 72 1.9k
Jakub Kierczak Poland 25 491 1.2× 301 0.8× 58 0.3× 102 0.6× 35 0.2× 53 1.6k
Thierry De Putter Belgium 19 241 0.6× 195 0.5× 107 0.6× 141 0.8× 30 0.2× 67 1.5k

Countries citing papers authored by N.P. Ratnayake

Since Specialization
Citations

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

Fields of papers citing papers by N.P. Ratnayake

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by N.P. Ratnayake. 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 N.P. Ratnayake. The network helps show where N.P. Ratnayake may publish in the future.

Co-authorship network of co-authors of N.P. Ratnayake

This figure shows the co-authorship network connecting the top 25 collaborators of N.P. Ratnayake. A scholar is included among the top collaborators of N.P. Ratnayake 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 N.P. Ratnayake. N.P. Ratnayake 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.
Abeysinghe, Bandara, et al.. (2025). Transforming nickel toxicity into resource recovery through phytomining: opportunities and applications in Sri Lanka. International Journal of Environmental Science and Technology. 22(9). 8405–8424.
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Ratnayake, N.P., Bandara Abeysinghe, Ranjith Premasiri, et al.. (2024). Soil-to-resource approach to assess the Ni hyperaccumulating potential of native plant species for phytomining at Ginigalpelessa serpentinite deposit, Sri Lanka. Arabian Journal of Geosciences. 17(3). 1 indexed citations
4.
Dushyantha, Nimila, N.P. Ratnayake, Rohana Chandrajith, et al.. (2024). Risk assessment of heavy metals in the freshwater lake sediments around Eppawala phosphate deposit, Sri Lanka. Journal of the National Science Foundation of Sri Lanka. 51(4). 573–587.
5.
Abeysinghe, Bandara, Ranjith Premasiri, Nimila Dushyantha, et al.. (2023). The role of nickel (Ni) as a critical metal in clean energy transition: applications, global distribution and occurrences, production-demand and phytomining. Journal of Asian Earth Sciences. 259. 105912–105912. 38 indexed citations
6.
Dushyantha, Nimila, et al.. (2023). Risk evaluation and remedial measures for heavy metal contamination in lagoonal sediments of the Negombo Lagoon, Sri Lanka after the X-Press Pearl maritime disaster. Regional Studies in Marine Science. 67. 103200–103200. 3 indexed citations
7.
Ratnayake, Amila Sandaruwan, Tsuyoshi Haraguchi, Kazuhisa Goto, et al.. (2023). Sedimentological observations and geochemical characteristics of paleo-tsunami deposits along the east coast of Sri Lanka in the Indian Ocean. Quaternary International. 661. 49–59. 5 indexed citations
8.
Batapola, Nadeera, N.P. Ratnayake, Bandara Abeysinghe, et al.. (2022). Exploration for rare earth elements (REES) in different geological formations of Sri Lanka and their recovery potential. 2(1). 47–50.
9.
Dushyantha, Nimila, I.M.S.K. Ilankoon, N.P. Ratnayake, et al.. (2022). Recovery Potential of Rare Earth Elements (REEs) from the Gem Mining Waste of Sri Lanka: A Case Study for Mine Waste Management. Minerals. 12(11). 1411–1411. 11 indexed citations
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Dushyantha, Nimila, et al.. (2021). Potential ecological risk assessment of heavy metals (Cr, Ni, and Co) in serpentine soil at Ginigalpelessa in Sri Lanka. Arabian Journal of Geosciences. 14(13). 7 indexed citations
12.
Batapola, Nadeera, Nimila Dushyantha, N.P. Ratnayake, et al.. (2021). Rare earth element potential in the beach placers along the southwest coast of Sri Lanka. 1 indexed citations
13.
Ratnayake, Amila Sandaruwan, et al.. (2020). Sea-level inundation and risk assessment along the south and southwest coasts of Sri Lanka. Geoenvironmental Disasters. 7(1). 27 indexed citations
14.
Yokoyama, Yūsuke, Shoko Hirabayashi, Kazuhisa Goto, et al.. (2019). Holocene Indian Ocean sea level, Antarctic melting history and past Tsunami deposits inferred using sea level reconstructions from the Sri Lankan, Southeastern Indian and Maldivian coasts. Quaternary Science Reviews. 206. 150–161. 40 indexed citations
15.
Ratnayake, Amila Sandaruwan, Yoshikazu Sampei, & N.P. Ratnayake. (2019). Molecular indicators of early stage diagenesis in the tropical coastal Bolgoda Lake, Sri Lanka. Journal of the National Science Foundation of Sri Lanka. 47(1). 69–69. 6 indexed citations
16.
Ratnayake, Amila Sandaruwan, et al.. (2018). Seasonal and tidal influence for water quality changes in coastal Bolgoda Lake system, Sri Lanka. Journal of Coastal Conservation. 22(6). 1191–1199. 34 indexed citations
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Balakrishnan, S., et al.. (2007). ED WAVE: an educational software for training in wastewater technologies using virtual application sites. International journal of engineering education. 23(6). 1172–1181. 4 indexed citations
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Kehelpannala, K.V. Wilbert & N.P. Ratnayake. (1999). Evidence for Post-Metamorphic Metasomatism of High-Grade Orthogneisses from Sri Lanka. Gondwana Research. 2(2). 167–184. 9 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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