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. Author manuscript; available in PMC: 2022 Mar 18.
Published in final edited form as: Annu Rev Anal Chem (Palo Alto Calif). 2021 Jul 27;14(1):437–465. doi: 10.1146/annurev-anchem-091520-085936

Figure 2.

Figure 2.

Distribution of mass spectrometers in developing countries is compared with other parts of the world. Number of mass spectrometers are counted from selected institution’s websites. Institutions are selected based on listed top 100 universities of the country at UniRank (http://4icu.org/). (A) Distributions of mass spectrometers in developing countries are shown in world map. For comparison of disparity of owned mass spectrometers, region of Ohio, United States and South Africa are selected. Approximately 43 instruments are found in five different institutions (University of Cincinnati, University of Akron, Ohio University, Cleveland State University, and The Ohio State University) in Ohio, USA. In South Africa, 67 instruments are owned by 18 different institutions (http://eqdb.nrf.ac.za/). Based on the collected database, ratio of number of instruments per institution are calculated for the following regions: (B) Ohio, (C) South Africa, and (D) South Asia.