Výsledky vyhledávání - "Lurdes I.B. Silva"

Breath analysis by optical fiber sensor for the determination of exhaled organic compounds with a view to diagnostics

Autor: Armando C. Duarte, M.E. Pereira, Lurdes I.B. Silva, Teresa Rocha-Santos, Ana C. Freitas

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

Breath analysis constitutes a promising tool in clinical and analytical fields due to its high potential for non-invasive diagnostics of metabolic disorders and monitoring of disease status. An optical fiber (OF) sensor has been developed for determi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16784bee0c1a245ffffb9cf17e649c93
https://doi.org/10.1016/j.talanta.2010.11.056

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Assessment of fatty acid as a differentiator of usages of urban soils

Autor: Lurdes I.B. Silva, Ana C. Freitas, Teresa Rocha-Santos, Ruth Pereira, Anabela Cachada, Armando C. Duarte

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

The determination of fatty acids (FA) has been extensively used as a sensitive and reproducible parameter for characterizing the soil microorganism communities and to detect various environmental stresses. The aim of this study was to assess the vari

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0f1fdec44bff35e45de0e42337ba01c
https://doi.org/10.1016/j.chemosphere.2010.07.050

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Evaluation of tertiary treatment by fungi, enzymatic and photo-Fenton oxidation on the removal of phenols from a kraft pulp mill effluent: a comparative study

Autor: Ana Gabriela Marques, Celine I.L. Justino, Dina Rodrigues, Armando C. Duarte, Teresa Rocha-Santos, Lurdes I.B. Silva, Ana C. Freitas

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

Pulp and paper mills generate pollutants associated to their effluents depending upon the type of process, type of the wood materials, process technology applied, management practices, internal recirculation of the effluent for recovery, the amount o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b4f13b0e6ce1d4dd2ef184359980196
https://doi.org/10.1007/s10532-010-9395-3

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Optical fiber biosensor coupled to chromatographic separation for screening of dopamine, norepinephrine and epinephrine in human urine and plasma

Autor: Lurdes I.B. Silva, Teresa Rocha-Santos, Ana C. Freitas, F. Ferreira, Armando C. Duarte

Publikováno v: Talanta. 80:853-857

An optical fiber biosensor has been developed for the determination of catecholamines (dopamine, norepinephrine and epinephrine) based on the recognition capacity of the enzyme laccase. In this study, a glass tube constituted by a fused silica fiber

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fdae21e07d6c4eb3ee74326b36d63c6
https://doi.org/10.1016/j.talanta.2009.08.003

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Carbon nanotube field-effect transistor detector associated to gas chromatography for speciation of benzene, toluene, ethylbenzene, (o-, m- and p-)xylene

Autor: Armando C. Duarte, F. Ferreira, Lurdes I.B. Silva, Teresa Rocha-Santos

Publikováno v: Journal of Chromatography A. 1216:6517-6521

An analytical methodology based on a field-effect transistor detector using carbon nanotubes (NTFET) coupled to a gas chromatograph has been developed for the speciation of the following aromatic compounds: benzene, toluene, ethylbenzene, m -xylene,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1246c1b240ebfa856870329ba6b5edf
https://doi.org/10.1016/j.chroma.2009.07.060

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Remote optical fibre microsensor for monitoring BTEX in confined industrial atmospheres

Autor: Teresa Rocha-Santos, Lurdes I.B. Silva, Armando C. Duarte

Publikováno v: Talanta. 78:548-552

A portable optical fibre sensor has been developed for remote monitoring of benzene, toluene, ethylbenzene, p-xylene, m-xylene and o-xylene (BTEX). Firstly, the analyser was tested for calibration and its analytical performance for BTEX monitoring co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a6d091689aee095681a064addebd7a8
https://doi.org/10.1016/j.talanta.2008.12.011

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Polymeric nanofilm-coated optical fibre sensor for speciation of aromatic compounds

Autor: António M-Costa, Armando C. Duarte, Lurdes I.B. Silva, Ana C. Freitas, Teresa Rocha-Santos

Publikováno v: International Journal of Environmental Analytical Chemistry. 89:183-197

An optical fibre sensor has been shown to be suitable for monitoring of benzene, toluene and o-xylene (BTX) with both high selectivity and sensitivity. The sensing principle underlying this experimental device is based on the changes of the reflected

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d0e102fb5472017798c49e1661b16871
https://doi.org/10.1080/03067310802603958

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Gas Chromatography-Optical Fiber Detector for the Speciation of Aromatic Hydrocarbons in Confined Areas

Autor: Teresa Rocha-Santos, Armando C. Duarte, Lurdes I.B. Silva

Publikováno v: Analytical Sciences. 24:963-966

An analytical method, based on separation with gas chromatography (GC) and detection with optical fiber (OF), was used for the separation, detection and quantification of benzene, toluene, ethylbenzene, p-xylene, m-xylene and o-xylene. The use of OF

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24d5a88316ce06e7693a1dfa68fa84cf
https://doi.org/10.2116/analsci.24.963

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