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Publications for smahmad
(30)
2020
Bar Adsorptive Microextraction Coated with Carbon-based Phase Mixtures for Performance-Enhancement to Monitor Selected Benzotriazoles, Benzothiazoles, and Benzenesulfonamides in Environmental Water Matrices
(2020)
Samir M. Ahmad
Bruno B.C. Calado
Mariana N. Oliveira
Nuno R. Neng
J.M.F. Nogueira
Journal articles
2020
A Fast and Validated High Throughput Bar Adsorptive Microextraction (HT-BAµE) Method for the Determination of Ketamine and Norketamine in Urine Samples
(2020)
Samir M. Ahmad
Mariana N. Oliveira
Nuno R. Neng
J.M.F. Nogueira
Journal articles
2020
Carbon-Based Sorbent Coatings for the Determination of Pharmaceutical Compounds by Bar Adsorptive Microextraction
(2020)
Samir M. Ahmad et al., with 6 authors including:
Samir M. Ahmad
Ana S. Mestre
Nuno R. Neng
Ana P. Carvalho
José M. F. Nogueira
Journal articles
2020
Silício – O admirável mundo do silício!
(2020)
Nuno Neng
Samir ahmad
José Nogueira
Book chapters
2019
Monitoring traces of organochlorine pesticides in herbal matrices by bar adsorptive microextraction – Application to black tea and tobacco
(2019)
S. M. Ahmad
M. I. Gomes
A. H. Ide
N. R. Neng
J. M. F. Nogueira
Journal articles
2019
Bar adsorptive microextraction coated with multi-walled carbon nanotube phases - Application for trace analysis of pharmaceuticals in environmental waters
(2019)
F. Abujaber et al., with 6 authors including:
S.M. Ahmad
N.R. Neng
Journal articles
2019
High throughput bar adsorptive microextraction: A novel cost-effective tool for monitoring benzodiazepines in large number of biological samples
(2019)
S.M. Ahmad
J.M.F. Nogueira
Journal articles
2017
Pharmaceuticals analysis by using hydrochars as effective enrichment phases
(2017)
Ana S. Mestre et al., with 6 authors including:
Ana S. Mestre
S. M. Ahmad
N. R. Neng
Ana P. Carvalho
Conference papers
2017
Trace Analysis of Carbazole in Commercial Diesel by using Adsorption on Activated Biochar from Rice Husk Pyrolysis
(2017)
Gabriela P. S. Maciel et al., with 7 authors including:
Samir M. Ahmad
Ana P. Carvalho
José M. F. Nogueira
Journal articles
2017
Application of bar adsorptive microextraction to determine trace organic micro-pollutants in environmental water matrices
(2017)
Samir M. Ahmad
Alessandra H. Ide
Nuno R. Neng
José Manuel F. Nogueira
Journal articles
2017
Bar adsorptive microextraction technique - application for the determination of pharmaceuticals in real matrices
(2017)
Carlos Almeida
Samir M. Ahmad
José Manuel F. Nogueira
Journal articles
2017
Tape Adsorptive microextraction - A new analytical approach for sample enrichment
(2017)
N.R. Neng
S.M. Ahmad
J.M.F. Nogueira
Conference papers
2016
Enhancement for trace analysis of sulfonamide antibiotics in water matrices using bar adsorptive microextraction (BA?E)
(2016)
A.H. Ide
S.M. Ahmad
N.R. Neng
J.M.F. Nogueira
Journal articles
2016
Porous carbons as promising enrichment materials for trace level analysis of pharmaceutical compounds
(2016)
Ana S. Mestre et al., with 6 authors including:
Ana S. Mestre
S. M. Ahmad
N. R. Neng
Ana P. Carvalho
Conference papers
2016
Hydrochars as new coating material for bar adsorptive microextraction for the determination of pharmaceuticals and personal care products in aqueous matrices
(2016)
S. M. Ahmad
Ana S. Mestre
N. R. Neng
Ana P. Carvalho
J. M. Nogueira
Conference papers
2016
Determination of Trace Levels of Irgarol in Estuarine Water Matrices by Bar Adsorptive Microextraction
(2016)
Bruno Boto Calado
Samir Marcos Ahmad
Carlos Almeida
Nuno da Rosa Neng
José Manuel Florêncio Nogueira
Journal articles
2016
Bar adsorptive microextraction (BA?E) coated with mixed sorbent phases—Enhanced selectivity for the determination of non-steroidal anti-inflammatory drugs in real matrices in combination with capillary electrophoresis
(2016)
S.M. Ahmad
C. Almeida
N.R. Neng
J.M.F. Nogueira
Journal articles
2016
Removal of índole and carbazole from comercial diesel using activated carbon obtained from rice husk pyrolysis
(2016)
Gabriela P.S. Maciel
Samir M. Ahmad
Ana P. Carvalho
José M.F. Nogueira
Elina B. Caramão
Conference papers
2015
Novel technologies for sample preparation in green analytical chemistry
(2015)
A. H. Ide
S. M. Ahmad
N. R. Neng
J. M. F. Nogueira
Conference papers
2015
Determination of mitragynine in urine matrices by bar adsorptive microextraction
(2015)
S.M. Ahmad
H. Gaspar
N.R. Neng
J.M.F. Nogueira
Conference papers
2015
Application of a new analytical approach for the determination of psychoactive cathinones in oral fluid
(2015)
A.M. Segurado et al., with 6 authors including:
S. M. Ahmad
N. R. Neng
Conference papers
2015
Application of Bar Adsorptive Microextraction-Large-Volume Injection-Gas Chromatography-Mass Spectrometric Method for the Determination of Trace Levels of Agrochemicals in Real Matrices
(2015)
J.R. Bernarda
S.M. Ahmad
C. Almeida
N.R. Neng
J.M.F. Nogueira
Journal articles
2015
Determination of mitragynine in urine matrices by bar adsorptive microextraction
(2015)
N.R. Neng
S.M. Ahmad
H. Gaspar
J.M.F. Nogueira
Journal articles
2014
Trace level analysis of testosterone and epitestosterone in urine samples using bar adsorptive micro-extraction (BAµE) for anti-doping control screening purposes
(2014)
S.M. Ahmad
C. Almeida
N.R. Neng
J.M.F. Nogueira
Conference papers
2014
Trace level analysis of anabolic steroids in urine samples using bar adsorptive micro-extraction (BAµE) for anti-doping control screening purposes
(2014)
S.M. Ahmad
C. Almeida
N.R. Neng
J.M.F. Nogueira
Conference papers
2014
New Methodology on Determination of Pesticides in Water Matrices by Bar Adsorptive Microextraction (BAµE)
(2014)
J.R.E. Bernarda
C. Almeida
N.R. Neng
S.M. Ahmad
J.M.F. Nogueira
Conference papers
2014
Bar Adsorptive Microextraction (BAµE) Applied to Monitor Trace Levels of Testosterone and Epitestosterone in Urine Samples for Anti-doping Control Screening Purposes
(2014)
S.M. Ahmad
C. Almeida
N.R. Neng
J.M.F. Nogueira
Conference papers
2014
Application of Bar Adsorptive Microextraction for Anti-Doping Control Screening of Anabolic Steroids in Urine Matrices
(2014)
S.M. Ahmad
C. Almeida
N.R. Neng
J.M.F. Nogueira
Journal articles
2013
Micro-extracção Adsortiva Aplicada na Análise de esteróides Anabólicos em Contexto de Controlo Anti-doping
(2013)
Samir M. E. Ahmad
Academic documents
2013
Application of bar adsorptive micro-extraction (BAµE) for trace level analysis of testosterone and epitestosterone in urine samples for screening purposes in anti-doping control context
(2013)
S. M. Ahmad
C. Almeida
N. R. Neng
J. M. F. Nogueira
Conference papers