A technique using a fully automated on-line solid phase extraction (SPE) system (Symbiosis,
Spark Holland) combined with liquid chromatography (LC)–mass spectrometry (MS/MS) has …

Introduction: A multitude of antiretroviral drug formulations are now available for HIV-infected
adults and children. These formulations include individual and co-formulated drugs, many of …

A simple analytical method was developed in 100μL of plasma for the simultaneous assay of
the 7 nucleoside/nucleotide reverse transcriptase inhibitors (abacavir, didanosine …

This paper reviews the new technologies used for bioanalytical sample preparation as
developed and explored by Brazilian researchers. Off-line, at-line and on-line sample clean …

A method for the quantification of salidroside, a major biologically active compound in
Rhodiola, in rat plasma by on-line SPE LC/MS/MS in negative electrospray mode was …

A method based on solid‐phase extraction (SPE) coupled to high‐performance liquid
chromatography (HPLC) with positive ion electrospray ionization tandem mass spectrometry …

The bioanalysis and especially the sample preparation of nucleoside drugs in complex
media, such as human plasma, has been challenging due to the high polarity and high …

We have developed a sensitive, high-pressure liquid chromatographic–tandem mass
spectrometric (LC/MS/MS) method for the simultaneous determination of didanosine (ddI) …

OBJECTIVE: Simple methods for the determination of zidovudine (AZT), stavudine (d4T),
lamivudine (3TC) and indinavir (INV) in human plasma by reversed-phase liquid …

A potentiometric sensor based on carbon paste electrode impregnated concurrently with
molecularly imprinted polymer (MIP) and multi-walled carbon nanotubes (MWCNTs) was …