, Volume 98, Issue 1, pp 767–774 | Cite as

Comments on “Global trends of solid waste research from 1997 to 2011 by using bibliometric analysis”

  • Ai-Yuan Liu
  • Hui-Zhen Fu
  • Shi-Ying Li
  • Yu-Qing Guo

Non-alphabetic characters in a search filter should not be overlooked in bibliometric research. Since further results and discussion depend on the data abstracted by the search filter, omission or misuse of non-alphabetic characters in a search filter may lead to inaccurate results and wrong conclusions. The paper titled “Global trends of solid waste research from 1997 to 2011 by using bibliometric analysis” by Yang et al. (2012) may have made such an error, even though the authors stated “Care has been exercised to examine the data collected to assure their identity” (Yang et al. 2012).

In the section of materials and methods, the authors stated that “solid waste*” was used as the string to search topic (including titles, abstracts, and keywords) from 1997 to 2011 (Yang et al. 2012). However, a check on the extraction with the same string Topic = (“solid waste*”) generated only 9,348 papers in the same period, a drastic decrease of 61 % compared to 24,026 papers from Yang et al. The...


Solid Waste Sewage Sludge Waste Management Municipal Solid Waste Bibliometric Analysis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


  1. Dai, C. M., Zhou, X. F., Zhang, Y. L., Liu, S. G., & Zhang, J. (2011). Synthesis by precipitation polymerization of molecularly imprinted polymer for the selective extraction of diclofenac from water samples. Journal of Hazardous Materials, 198, 175–181.CrossRefGoogle Scholar
  2. Fu, H. Z., Ho, Y. S., Sui, Y. M., & Li, Z. S. (2010). A bibliometric analysis of solid waste research during the period 1993–2008. Waste Management, 30(12), 2410–2417.CrossRefGoogle Scholar
  3. Karlsen, J. R., & Solbakk, J. H. (2011). A waste of time: The problem of common morality in principles of biomedical ethics. Journal of Medical Ethics, 37(10), 588–591.CrossRefGoogle Scholar
  4. Yang, L., Chen, Z. L., Liu, T., Gong, Z., Yu, Y. J., & Wang, J. (2012). Global trends of solid waste research from 1997 to 2011 by using bibliometric analysis. Scientometrics, 96(1), 133–146.Google Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2013

Authors and Affiliations

  • Ai-Yuan Liu
    • 1
  • Hui-Zhen Fu
    • 2
  • Shi-Ying Li
    • 3
  • Yu-Qing Guo
    • 4
  1. 1.Jimei University LibraryXiamenPeople’s Republic of China
  2. 2.Department of Environmental SciencesPeking UniversityBeijingPeople’s Republic of China
  3. 3.Faculty of ScienceNational University of SingaporeSingaporeSingapore
  4. 4.Key Laboratory of Healthy Mariculture for the East China SeaMinistry of Agriculture, Fisheries College, Jimei UniversityXiamenPeople’s Republic of China

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