Universal screening method for the determination of US Environmental Protection Agency phenols at the lower ng l−1 level in water samples by on-line solid-phase extraction–high-performance liquid chromatography–atmospheric pressure chemical ionization mass spectrometry within a single run

2002 ◽  
Vol 963 (1-2) ◽  
pp. 149-157 ◽  
Author(s):  
R. Wissiack ◽  
E. Rosenberg
Keyword(s):  
Environmental Protection Agency ◽  
High Performance ◽  
Solid Phase ◽  
Atmospheric Pressure Chemical Ionization ◽  
Screening Method ◽  
Ionization Mass ◽  
Pressure Chemical Ionization ◽  
Pressure Chemical ◽  
On Line

N,N′,N″-Triferuloylspermidine, a New UV Absorbing Polyamine Derivative from Pollen of Hippeastrum × hortorum

2001 ◽  
Vol 56 (7-8) ◽  
pp. 526-530 ◽  
Author(s):  
Nikolay Youhnovski ◽  
Christa Werner ◽  
Manfred Hesse
Keyword(s):  
Atmospheric Pressure ◽  
High Performance ◽  
Chemical Ionization ◽  
Atmospheric Pressure Chemical Ionization ◽  
Ionization Mass ◽  
Reference Compound ◽  
Meoh Extract ◽  
Pressure Chemical Ionization ◽  
Pressure Chemical ◽  
On Line

A new hydroxycinnamoyl polyamine derivative, N,N′,N″-triferuloylspermidine (= (E)-N-(4-aminobutyI)-3,3′,3″-tris(4-hydroxy-3-methoxyphenyl)-N,N′,N″-(butane-1,4-diyl)tris [prop-2-enamide]) (1) was detected in the H2O /MeOH extract of pollen from Hippeastrum × hortorum. The compound was identified by on-line-coupled high-performance liquid chromatography and atmospheric-pressure chemical-ionization mass spectrometry (HPLC-UV(DAD)/ APCI-MS and MS/MS). The structure was proven by comparing the HPLC/MS data after UV-induced (E) ⇄ (Z) photoisomerization and catalytic hydrogenation of the natural compound and the synthetic reference compound. This is the first report of a triferuloylspermidine in nature

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