A new insert sample approach to paper spray mass spectrometry: a paper substrate with paraffin barriers
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2016
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The analytical performance for paper spray (PS) using a new insert sample approach based on paper with paraffin barriers (PS-PB) is presented. The paraffin barrier is made using a simple, fast and cheap method based on the stamping of paraffin onto a paper surface. Typical operation conditions of paper spray such as the solvent volume applied on the paper surface, and the paper substrate type are evaluated. A paper substrate with paraffin barriers shows better performance on analysis of a range of typical analytes when compared to the conventional PS-MS using normal paper (PS-NP) and PS-MS using paper with two rounded corners (PS-RC). PS-PB was applied to detect sugars and their inhibitors in sugarcane bagasse liquors from a second generation ethanol process. Moreover, the PS-PB proved to be excellent, showing results for the quantification of glucose in hydrolysis liquors with excellent linearity (R2 = 0.99), limits of detection (2.77 mmol L−1) and quantification (9.27 mmol L−1). The results are better than for PS-NP and PS-RC. The PS-PB was also excellent in performance when compared with the HPLC-UV method for glucose quantification on hydrolysis of liquor samples.
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COLLETES, T. C. et al. A new insert sample approach to paper spray mass spectrometry: paper substrate with paraffin barriers. Analyst, London, v. 141, n. 5, p. 1707-1713, 2016. DOI: 10.1039/C5AN01954K. Disponível em: https://pubs.rsc.org/en/content/articlelanding/2016/AN/C5AN01954K. Acesso em: 28 jun. 2023.