It is our pleasure to invite you to read the highly cited papers from the Separations journal published in 2020. The selected papers are listed below:

1. “Analysis of Monoclonal Antibodies by Capillary Electrophoresis: Sample Preparation, Separation, and Detection”
by Catarina Osório, Susana Machado, Juliana Peixoto, Sílvia Bessada, Filipa B. Pimentel, Rita C. Alves and M. Beatriz P. P. Oliveira
Separations 2020, 7(2), 33; https://doi.org/10.3390/separations7020033
Available online: https://www.mdpi.com/2297-8739/7/2/33

2. “Evolution of Environmentally Friendly Strategies for Metal Extraction”
by Govind Sharma Shyam Sunder, Sandhya Adhikari, Ahmad Rohanifar, Abiral Poudel and Jon R. Kirchhoff
Separations 2020, 7(1), 4; https://doi.org/10.3390/separations7010004
Available online: https://www.mdpi.com/2297-8739/7/1/4

3. “Hunting Molecules in Complex Matrices with SPME Arrows: A Review”
by Jason S. Herrington, German A. Gómez-Ríos, Colton Myers, Gary Stidsen and David S. Bell
Separations 2020, 7(1), 12; https://doi.org/10.3390/separations7010012
Available online: https://www.mdpi.com/2297-8739/7/1/12

4. “Role of Ionic Liquids in Composites in Analytical Sample Preparation”
by Adrián Gutiérrez-Serpa, Patricia I. Napolitano-Tabares, Jakub Šulc, Idaira Pacheco-Fernández, and Verónica Pino
Separations 2020, 7(3), 37; https://doi.org/10.3390/separations7030037
Available online: https://www.mdpi.com/2297-8739/7/3/37

5. “Development and Validation of Rapid RP-HPLC and Green Second-Derivative UV Spectroscopic Methods for Simultaneous Quantification of Metformin and Remogliflozin in Formulation Using Experimental Design”
by Mahesh Attimarad, Rafea Elamin Elgack Elgorashe, Rajasekaran Subramaniam, Mohammed Monirul Islam, Katharigatta N. Venugopala, Sreeharsha Nagaraja and Abdulmalek Ahmed Balgoname
Separations 2020, 7(4), 59; https://doi.org/10.3390/separations7040059
Available online: https://www.mdpi.com/2297-8739/7/4/59

6. “Recent Advances in Molecularly Imprinted Membranes for Sample Treatment and Separation”
by Sagrario Torres-Cartas, Mónica Catalá-Icardo, Susana Meseguer-Lloret, Ernesto F. Simó-Alfonso and José Manuel Herrero-Martínez
Separations 2020, 7(4), 69; https://doi.org/10.3390/separations7040069
Available online: https://www.mdpi.com/2297-8739/7/4/69

7. “LC-MS Phytochemical Screening, In Vitro Antioxidant, Antimicrobial and Anticancer Activity of Microalgae Nannochloropsis oculata Extract”
by Adil Farooq Wali, Yusra Al Dhaheri, Jayachithra Ramakrishna Pillai, Ahlam Mushtaq, Padma G. M. Rao, Syed Arman Rabbani, Aimen Firdous, Mohamed Soliman Elshikh and Dunia A. Al Farraj
Separations 2020, 7(4), 54; https://doi.org/10.3390/separations7040054
Available online: https://www.mdpi.com/2297-8739/7/4/54

8. “Investigating the Utility of Fabric Phase Sorptive Extraction and HPLC-UV-Vis/DAD to Determine Antidepressant Drugs in Environmental Aqueous Samples”
by Cristina Jiménez-Holgado, Christoforos Chrimatopoulos, Vassilis Stathopoulos and Vasilios Sakkas
Separations 2020, 7(3), 39; https://doi.org/10.3390/separations7030039
Available online: https://www.mdpi.com/2297-8739/7/3/39

9. “Relationships in Gas Chromatography—Fourier Transform Infrared Spectroscopy—Comprehensive and Multilinear Analysis”
by Junaida Shezmin Zavahir, Jamieson S. P. Smith, Scott Blundell, Habtewold D. Waktola, Yada Nolvachai, Bayden R. Wood and Philip J. Marriott
Separations 2020, 7(2), 27; https://doi.org/10.3390/separations7020027
Available online: https://www.mdpi.com/2297-8739/7/2/27

10. “Current Trends in Simultaneous Determination of Co-Administered Drugs”
by Christian Celia, Luisa Di Marzio, Marcello Locatelli, Piera Ramundo, Francesca D’Ambrosio and Angela Tartaglia
Separations 2020, 7(2), 29; https://doi.org/10.3390/separations7020029 
Available online: https://www.mdpi.com/2297-8739/7/2/29

We would like to take this opportunity to thank all the research groups that submitted these exceptional papers for their contributions to Separations. We would greatly appreciate it if you could circulate this document among your colleagues or through your network.