Nanoextraction based on surface nanodroplets for chemical preconcentration and determination

• Published in: Biomicrofluidics Vol. 16; no. 5; p. 051502
• Main Authors: Wu, Hongyan, Kanike, Chiranjeevi, Atta, Arnab, Zhang, Xuehua
• Format: Book Review Journal Article
• Language: English
• Published: Melville American Institute of Physics 01-09-2022; AIP Publishing LLC
• Subjects: Analytical chemistry; Continuous flow; Liquid-liquid extraction; Review
• ISSN: 1932-1058; 1932-1058
• DOI: 10.1063/5.0121912

Liquid-liquid extraction based on surface nanodroplets, namely nanoextraction, can continuously extract and enrich target analytes from the flow of a sample solution. This sample preconcentration technique is easy to operate in a continuous flow system with a low consumption of organic solvent and a high enrichment factor. In this review, the evolution from single drop microextraction to advanced nanoextraction will be briefly introduced. Moreover, the formation principle and key features of surface nanodroplets will be summarized. Further, the major findings of nanoextraction combined with in-droplet chemistry toward sensitive and quantitative detection will be discussed. Finally, we will give our perspectives for the future trend of nanoextraction.