Search Results - "Lancas, Fernando M"

Recent developments and applications of stir bar sorptive extraction by Lancas, Fernando M, Queiroz, Maria Eugênia C, Grossi, Paula, Olivares, Igor R.B

“…The theoretical aspects of stir bar sorptive extraction (SBSE), as well as the recent applications of this technique in pharmaceutical, biomedical,…”
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Determination of steroids, caffeine and methylparaben in water using solid phase microextraction-comprehensive two dimensional gas chromatography–time of flight mass spectrometry by Lima Gomes, Paulo C.F., Barnes, Brian B., Santos-Neto, Álvaro J., Lancas, Fernando M., Snow, Nicholas H.

“…•Automated low-level extraction, separation and detection of drugs in water using SPME-GCxGC–ToFMS.•Analysis of steroids by GC–MS without derivatization or…”
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Determination of Ochratoxin A in wine by packed in-tube solid phase microextraction followed by high performance liquid chromatography coupled to tandem mass spectrometry by Andrade, Mariane A., Lanças, Fernando M.

“…•An in-tube SPME method was developed for the determination of Ochratoxin A in wine.•The in-tube SPME method was optimized using a central composite…”
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Modified graphene-silica as a sorbent for in-tube solid-phase microextraction coupled to liquid chromatography-tandem mass spectrometry. Determination of xanthines in coffee beverages by Mejía-Carmona, Karen, Lanças, Fernando M.

“…•Alkyl derivatized graphene-based silica particles showed improved sorption capacity.•A fully automated packed in-tube SPME-UPLC-MS/MS method was…”
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Development of a new stir bar sorptive extraction coating and its application for the determination of six pesticides in sugarcane juice by Barletta, Juliana Y., de Lima Gomes, Paulo C. F., dos Santos-Neto, Álvaro J., Lancas, Fernando M.

“…In this article, a novel polydimethylsiloxane/activated carbon (PDMS‐ACB) material is proposed as a new polymeric phase for stir bar sorptive extraction…”
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Recent Trends in Graphene-Based Sorbents for LC Analysis of Food and Environmental Water Samples by Borsatto, João V B, Lanças, Fernando M

“…This review provides an overview of recent advancements in applying graphene-based materials as sorbents for liquid chromatography (LC) analysis…”
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Capillary Column Switching Restricted-Access Media-Liquid Chromatography-Electrospray Ionization-Tandem Mass Spectrometry System for Simultaneous and Direct Analysis of Drugs in Biofluids by Santos-Neto, Alvaro J, Markides, Karin E, Sjöberg, Per J. R, Bergquist, Jonas, Lancas, Fernando M

“…Capillary online restricted-access media-liquid chromatography-electrospray ionization-tandem mass spectrometry (RAM-LC-ESI-MS/MS) for direct analysis of drugs…”
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Evolution in miniaturized column liquid chromatography instrumentation and applications: An overview by Nazario, Carlos E.D., Silva, Meire R., Franco, Maraíssa S., Lanças, Fernando M.

“…•Evolution on solvent delivering systems fort miniaturized LC using dual piston reciprocating or syringe-type pumps.•Most used capillary columns in…”
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Development of a unified method for the determination of legacy and metabolites of current pesticides in serum for exposure assessment by Birolli, Willian G., Lanças, Fernando M., Silveira, Henrique C. S., Santos-Neto, Álvaro J.

“…The use of pesticides is often regarded as a fundamental aspect of conventional agriculture. However, these compounds have gained recognition as some of the…”
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Investigation of the applicability of silica-graphene hybrid materials as stationary phases for capillary liquid chromatography by Borsatto, João V.B., Maciel, Edvaldo V.S., Lanças, Fernando M.

“…•Evaluation of SIGO-C18ec particles as stationary phase for capillary LC stationary phase.•Performance comparison of columns packed with SiGO-C18ec particles…”
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Application of an in-house packed octadecylsilica-functionalized graphene oxide column for capillary liquid chromatography analysis of hormones in urine samples by Maciel, EdvaldoV.S., Borsatto, João V.B., Mejia-Carmona, Karen, Lanças, Fernando M.

“…Graphene oxide-based LC stationary phases were developed and applied for separating hormones from urine using capillaryLC-MS/MS. Using two analytical…”
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Development of Wall-Coated Open Tubular Columns and Their Application to Nano Liquid Chromatography Coupled to Tandem Mass Spectrometry by Santos, Natalia G P, Medina, Deyber A V, Lanças, Fernando M

“…This work presents a study on the application of wall open tubular column (WCOT) in liquid chromatography coupled with tandem mass spectrometry. Each process…”
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Analyzes of β-lactam antibiotics by direct injection of environmental water samples into a functionalized graphene oxide-silica packed capillary extraction column online coupled to liquid chromatography tandem mass spectrometry by Maciel, Edvaldo V.S., Vargas-Medina, Deyber A., Lancas, Fernando M.

“…•A greener procedure for extracting β-lactams from water samples is presented.•A graphene-based material (GO@SiO2) was employed as the sorbent phase.•A…”
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Modern automated microextraction procedures for bioanalytical, environmental, and food analyses by Sartore, Douglas M., Vargas Medina, Deyber A., Bocelli, Marcio D., Jordan‐Sinisterra, Marcela, Santos‐Neto, Álvaro J., Lanças, Fernando M.

“…Sample preparation frequently is considered the most critical stage of the analytical workflow. It affects the analytical throughput and costs; moreover, it is…”
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Packed in-tube solid phase microextraction with graphene oxide supported on aminopropyl silica: Determination of target triazines in water samples by De Toffoli, Ana L, Fumes, Bruno H, Lanças, Fernando M

“…On-line in-tube solid phase microextraction (in-tube SPME) coupled to high performance liquid chromatography and tandem mass spectrometry (HPLC-MS/MS) was…”
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Leaf-cutter ant fungus gardens are biphasic mixed microbial bioreactors that convert plant biomass to polyols with biotechnological applications by Somera, Alexandre F, Lima, Adriel M, Dos Santos-Neto, Álvaro J, Lanças, Fernando M, Bacci, Jr, Maurício

“…Leaf-cutter ants use plant matter to culture the obligate mutualistic basidiomycete Leucoagaricus gongylophorus. This fungus mediates ant nutrition on plant…”
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Online Extraction Followed by LC-MS/MS Analysis of Lipids in Natural Samples: A Proof-of-Concept Profiling Lecithin in Seeds by Borsatto, João V B, Maciel, Edvaldo V S, Cifuentes, Alejandro, Lanças, Fernando M

“…Sample preparation is usually a complex and time-consuming procedure, which can directly affect the quality of the analysis. Recent efforts have been made to…”
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Unified chromatography: Fundamentals, instrumentation and applications by Silva, Meire R., Andrade, Felipe N., Fumes, Bruno H., Lanças, Fernando M.

“…The concept of unified chromatography has been in existence for 50 years after the work of Giddings proposing that all modes of chromatography (gas…”
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Silica modified with polymeric amphiphilic nanoparticles as first dimension for multidimensional separation techniques by Franco, Maraíssa S., Padovan, Rodrigo N., Fumes, Bruno H., Palmer, Christopher P., McGettrick, Julie R., Lanças, Fernando M.

“…•A new sorbent based on amphiphilic nanoparticle supported on silica was developed.•The main characteristics of the new sorbent were investigated using several…”
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Determination of Diclofenac in Bovine Milk at Low Levels Using Ultra High Performance Liquid Chromatography–Tandem Mass Spectrometry by Nazario, Carlos E. D., Lancas, Fernando M.

“…This paper reports on the development and validation of a simple, rapid, and sensitive ultra high performance liquid chromatography–tandem mass spectrometry…”
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