Time‐of‐flight secondary ion mass spectrometry and gas chromatography–mass spectrometry studies of alkanethiol self‐assembled monolayers on nanoporous gold surfaces

2020 ◽  
Vol 53 (1) ◽  
pp. 21-30
Author(s):  
Aly M. Hafez ◽  
Quoc Trung Hua ◽  
Mohamed Shaker S. Adam
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Secondary Ion Mass Spectrometry ◽  
Time Of Flight ◽  
Nanoporous Gold ◽  
Gas Chromatography Mass Spectrometry ◽  
Self Assembled Monolayers ◽  
Gold Surfaces ◽  
Assembled Monolayers ◽  
Secondary Ion

Distribution of extracts including 4,8-dihydroxy-5-methoxy-2-naphthaldehyde in Diospyros kaki analyzed by gas chromatography-mass spectrometry and time-of-flight secondary ion mass spectrometry

Holzforschung ◽  
2012 ◽  
Vol 66 (6) ◽  
pp. 705-709 ◽  
Author(s):  
Yasuyuki Matsushita ◽  
In-Cheol Jang ◽  
Takanori Imai ◽  
Ruka Takama ◽  
Kaori Saito ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Secondary Ion Mass Spectrometry ◽  
Time Of Flight ◽  
Gas Chromatography Mass Spectrometry ◽  
Diospyros Kaki ◽  
Compound I ◽  
Tof Sims ◽  
Ion Mass Spectrometry ◽  
Secondary Ion

Abstract The distribution of ethyl acetate extracts and 4,8-dihydroxy-5-methoxy-2-naphthaldehyde (compound I), which is a major constituent of the extracts obtained from the blackened heartwood of Diospyros kaki, was analyzed via gas chromatography-mass spectrometry (GC-MS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS). According to GC-MS, the extracts and compound I are high in concentration at the pith and at the edges of the blackened heartwood. ToF-SIMS analysis revealed a peak at a mass-to-charge ratio of (m/z) 218, which is characteristic of the ionic form of compound I. The ToF-SIMS imaging of compound I in the blackened heartwood based on m/z 218 shows that compound I is located in parenchyma cells and their neighboring axial elements.

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