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Functionalized Pyrolytic Highly Oriented Graphite Polymer Film for Surface‐assisted Laser Desorption/ionization Mass Spectrometry in Environmental Analysis by Hideya Kawasaki; Naoyuki Takahashi; Hiroki Fujimori; Kouji Okumura; Takehiro Watanabe; Chisato Matsumura; Syusuke Takemine; Takeshi Nakano; Ryuichi Arakawa is a Chemistry article available to read on EtoBox.

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## Abstract The pyrolytic highly oriented graphite polymer film (PGS) was first employed to analyze low‐mass analytes in environmental analysis by surface‐assisted laser desorption/ionization mass spectrometry (SALDI‐MS). PGS is a synthetic uniform and highly oriented graphite polymer film with high thermal anisotropic conductivity. We have found that negative ion mode SALDI‐MS using oxidized PGS (PGS‐SALDI‐MS) can be used to detect [M–H]^−^ ions from perfluorooctanoic acid (PFOA) and other perfluoroalkylcarboxylic acids when the PGS surface is modified with the cationic polymer polyethyleneimine (PEI). The signal intensity of PFOA when employing the PEI modification showed a ten‐fold increase over that obtained from desorption/ionization on porous silicon (DIOS). PFOA was quantified using PGS‐SALDI‐MS and the calibration curve showed a wide linear dynamic range of response (20–1000 ppb). The combination of atmospheric pressure ionization and PGS (AP‐PGS‐SALDI) showed greater signal intensity than vacuum PGS‐SALDI for deprotonated PFOA. Several other environmentally important chemicals, including perfluoroalkylsulfonic acid, pentachlorophenol, bisphenol A, 4‐hydroxy‐2‐chlorobipheny

Who reads Functionalized Pyrolytic Highly Oriented Graphite Polymer Film for Surface‐assisted Laser Desorption/ionization Mass Spectrometry in Environmental Analysis?

Author

Hideya Kawasaki; Naoyuki Takahashi; Hiroki Fujimori; Kouji Okumura; Takehiro Watanabe; Chisato Matsumura; Syusuke Takemine; Takeshi Nakano; Ryuichi Arakawa

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0951-4198)

Published

2009

Language

EN

Field

Chemistry (Physical Sciences)