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DERIVATISATION in Biological Technology

ANALYSIS OF AMINO ACIDS BY REVERSED PHASE CHROMATOGRAPHY WITH PRECOLUMN DERIVATISATION AND UV/VISIBLE DETECTION

Key words: Amino Acids, RP-HPLC, Precolumn derivatisation, o-Phthalaldehyde (OPA), 2-Mercaptopropionic acid, Ultraviolet detection. Introduction: Underivatised amino acids do not significantly absorb light in the UV/visible spectrum. In order to increase...

High sensitivity quantitation of metabolites of nitrofuran antibiotics in animal tissue using LC/MS/MS

...efore injections. The mixed external calibration standards were made by spiking the metabolite stock standards into blank chicken meat followed by the derivatisation described above. The isotopic internal standard D4-AOZ and D5-AMOZ were spiked to correct peak area responses. The D4-AOZ was used for AH, AOZ, and SC...
DERIVATISATION in Biological Products

Adept HPLC System 8: Ion Chromatography from Cecil Instruments Ltd.

Description:...nary or ternary gradient separations. The supplied analytical pump may be substituted by a semi-preparative pump. Various valve switching and column derivatisation devices may be easily fitted....
Company:Cecil Instruments Ltd.
DERIVATISATION in other areas

Liquid Chromatography Combined with Mass Spectrometry Utilising High ...

The methodology includes derivatisation to enhance ionisation, exact mass ... However, this method, like all derivatisation procedures, has its drawbacks, one ...

PubMed Central Full Text

Versatile derivatisation of solid support media for covalent bonding on DNA ... This derivatisation represents a support chemistry versatile enough to serve ...

ANALYSIS OF AMINO ACIDS BY REVERSED PHASE CHROMATOGRAPHY WITH PRECOLUMN ...

Derivatisation can be performed before the chromatographic separation or after ... The derivatisation is performed automatically by the autosampler before ...

MEL - MESL : Organotin Speciation Analyses in Marine Biota using NaBEt4 ...

The Grignard derivatisation requires scrupulously dry conditions and is ... Derivatisation in the aqueous phase using sodium tetraethylborate (NaBEt4) and ...

[MMV] " ARTEMISININ FORUM 2008 - Joint meeting on Ensuring Sustainable ...

[MMV] " ARTEMISININ FORUM 2008 - Joint meeting on Ensuring Sustainable Artemisinin Production: ... 2) Artemisinin extraction, derivatisation and analysis ...

OPA Derivatisation (nucleophillic addition with elimination)

HPLC autosamplers can be used for carrying out the derivatisation chemistries prior to analysis. This is particularly useful when the derivative is not stable and ...
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