Effective derivatization of phenylalanine, tyrosine and related compounds in negative ion chemical ionization mass spectrometry.
نویسندگان
چکیده
منابع مشابه
Plasma polyamines determined by negative-ion chemical ionization/mass spectrometry.
We have developed an accurate and highly sensitive gas-chromatographic/mass-spectrometric procedure for determining di- and polyamines (putrescine, spermidine, and spermine) in plasma and erythrocytes. Deuterium-labeled analogs of putrescine, spermidine, and spermine were synthesized for use as internal standards. Trifluoroacetyl derivatives of the polyamines were formed during the procedure an...
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T h e b a c k g r o u n d a t m o s p h e r i c m i x i n g r a t i o s f o r a r a n g e o f c y c l i c p e r f l u o r o c a r b o n s ( c y c l i c P F C s ) , w i d e l y u s e d i n a t m o s p h e r i c d i s p e r s i o n s t u d i e s , h a v e b e e n m e a s u r e d b y g a s c h r o m a t o g r a p h y m a s s s p c t r o m e t r y i n n e g a t i v e i o n c h e m i c a l i o n i z...
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Derivatization of neutral steroids for increasing sensitivity in liquid chromatography/negative atmospheric pressure chemical ionization-mass spectrometry (APCI-MS) has been examined. Under APCI conditions, gas-phase electrons are provided by the corona discharge and captured by electron-affinitive compounds. In negative APCI-MS, therefore, ultrahigh sensitivity can be obtained by tagging neutr...
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ژورنال
عنوان ژورنال: Journal of the Mass Spectrometry Society of Japan
سال: 1983
ISSN: 1340-8097,1880-4225
DOI: 10.5702/massspec.31.205