Search results for: Verónica Pino

Items from 1 to 20 out of 66 results

article

Metal–Organic Framework‐Coated Glass Vials: A Step Forward in Analytical Platforms (Adv. Funct. Mater. 36/2024)

Iván Taima‐Mancera, María J. Trujillo‐Rodríguez, Jorge Pasán, Verónica Pino

Advanced Functional Materials > 34 > 36 > n/a - n/a

MOF‐Coated Glass Vials In article number 2402517, Jorge Pasán, Verónica Pino, and co‐workers present a MOF‐coated vial as the perfect and simplest sample prep device, not only acting as a sample container but simultaneously extracting pollutants from waters at low ppb levels and preconcentrating them by a factor of 20. They explain how a homogenous layer of MOF crystals can be grown onto the glass...

article

Metal–Organic Framework‐Coated Glass Vials: A Step Forward in Analytical Platforms

Iván Taima‐Mancera, María J. Trujillo‐Rodríguez, Jorge Pasán, Verónica Pino

Advanced Functional Materials > 34 > 36 > n/a - n/a

A robust microextraction device in the form of a glass vial internally coated with metal–organic frameworks (MOFs) is designed, fabricated by in situ growth of different Zr‐based MOFs, and fully characterized for its novel use as an analytical platform. This device, uniformly coated by the MOF, ensures high simplicity and short times when used as an analytical microextraction tool, as the device acts...

article

SARS‐CoV‐2 infection and venous thromboembolism after surgery: an international prospective cohort study

COVIDSurg Collaborative, GlobalSurg Collaborative, Dmitri Nepogodiev, Joana FF Simoes, more

Anaesthesia > 77 > 1 > 28 - 39

SARS‐CoV‐2 has been associated with an increased rate of venous thromboembolism in critically ill patients. Since surgical patients are already at higher risk of venous thromboembolism than general populations, this study aimed to determine if patients with peri‐operative or prior SARS‐CoV‐2 were at further increased risk of venous thromboembolism. We conducted a planned sub‐study and analysis from...

article

Effects of pre‐operative isolation on postoperative pulmonary complications after elective surgery: an international prospective cohort study

COVIDSurg Collaborative, GlobalSurg Collaborative, Dmitri Nepogodiev, Joana FF Simoes, more

Anaesthesia > 76 > 11 > 1454 - 1464

We aimed to determine the impact of pre‐operative isolation on postoperative pulmonary complications after elective surgery during the global SARS‐CoV‐2 pandemic. We performed an international prospective cohort study including patients undergoing elective surgery in October 2020. Isolation was defined as the period before surgery during which patients did not leave their house or receive visitors...

article

Timing of surgery following SARS‐CoV‐2 infection: an international prospective cohort study

COVIDSurg Collaborative, GlobalSurg Collaborative, Dmitri Nepogodiev, Joana FF Simoes, more

Anaesthesia > 76 > 6 > 748 - 758

Peri‐operative SARS‐CoV‐2 infection increases postoperative mortality. The aim of this study was to determine the optimal duration of planned delay before surgery in patients who have had SARS‐CoV‐2 infection. This international, multicentre, prospective cohort study included patients undergoing elective or emergency surgery during October 2020. Surgical patients with pre‐operative SARS‐CoV‐2 infection...

article

High‐throughput microscale extraction using ionic liquids and derivatives: A review

María J. Trujillo‐Rodríguez, Verónica Pino, Manuel Miró

Journal of Separation Science > 43 > 9-10 > 1890 - 1907

Ionic liquids and derivatives—mainly polymeric ionic liquids and magnetic ionic liquids—have been extensively used in microscale extraction over the past few years. Current trends in analytical sample preparation gear toward linking microextraction approaches with high‐throughput sample processing to comply with green analytical chemistry requirements. A variety of high sample throughput strategies...

article

Braid solid-phase microextraction of polycyclic aromatic hydrocarbons by using fibers coated with silver-based nanomaterials in combination with HPLC with fluorometric detection

Adrián Gutiérrez-Serpa, Daniel Schorn-García, Francisco Jiménez-Moreno, Ana I. Jiménez-Abizanda, more

Microchimica Acta > 2019 > 186 > 5 > 1-11

Authors propose a novel braid support configuration for use in solid-phase microextraction (SPME) fibers. Two different braided supports (double and triple) were prepared and compared with the conventional single support configuration. Three kinds of silver-based nanomaterials that serve as coatings on these supports are described. They included silver dendrites, silver nanoparticles (AgNPs), and...

article

Silver nanoparticles supported onto a stainless steel wire for direct-immersion solid-phase microextraction of polycyclic aromatic hydrocarbons prior to their determination by GC-FID

Adrián Gutiérrez-Serpa, Patricia I. Napolitano-Tabares, Verónica Pino, Francisco Jiménez-Moreno, more

Microchimica Acta > 2018 > 185 > 7 > 1-10

The authors describe a new coating for use in solid-phase microextraction (SPME). Silver nanoparticles (AgNPs) were prepared by using gallic acid or glucose as the reducing agents, and then supported onto a stainless steel wire that was previously coated with a silver mirror. Coating with AgNPs was performed by a layer-by-layer approach of up to eight cycles of consecutive deposition of AgNPs and...

article

Insights in the analytical performance of neat metal-organic frameworks in the determination of pollutants of different nature from waters using dispersive miniaturized solid-phase extraction and liquid chromatography

Priscilla Rocío-Bautista, Verónica Pino, Jorge Pasán, Irene López-Hernández, more

Talanta > 2018 > 179 > C > 775-783

Five metal-organic frameworks (MOFs), specifically HKUST-1, MOF-5(Zn), MIL-53(Al), UiO-64 and MOF-74(Zn) are synthesized, characterized, and utilized in a miniaturized solid-phase extraction method under dispersive mode (D-µSPE) for the determination of six pollutants of different nature, including one polycyclic aromatic hydrocarbon, two hormones, two drugs, and one disinfectant, from environmental...

article

Salt-induced ionic liquid-based microextraction using a low cytotoxic guanidinium ionic liquid and liquid chromatography with fluorescence detection to determine monohydroxylated polycyclic aromatic hydrocarbons in urine

Idaira Pacheco-Fernández, Verónica Pino, Jacob Lorenzo-Morales, Juan H. Ayala, more

Analytical and Bioanalytical Chemistry > 2018 > 410 > 19 > 4701-4713

A novel ionic liquid (IL)-based microextraction method has been developed for the determination of four hydroxylated polycyclic aromatic hydrocarbons (OHPAHs) in urine samples. The water soluble IL-based surfactant selected as extraction solvent is decylguanidinium chloride (C₁₀Gu-Cl), the cytotoxicity and micellar behavior of which were evaluated. The proposed salt-induced IL-based preconcentration...

article

Anti-Acanthamoeba activity of Tunisian Thymus capitatus essential oil and organic extracts

Salma Saoudi, Ines Sifaoui, Nadia Chammem, María Reyes-Batlle, more

Experimental Parasitology > 2017 > 183 > C > 231-235

Acanthamoeba species are free-living amoebae widely distributed in the environment and which cause serious human infections. The treatment of Acanthamoeba infections is always very difficult and not constantly effective. More efficient drugs against Acanthamoeba must be developed and medicinal plants can be useful in this case. Our research focused on the examination of the anti-Acanthamoeba activity...

article

Feasibility and safety of surgical wound remote follow-up by smart phone in appendectomy: A pilot study

Juan José Segura-Sampedro, Inés Rivero-Belenchón, Verónica Pino-Díaz, María Cristina Rodríguez Sánchez, more

Annals of Medicine and Surgery > 2017 > 21 > C > 58-62

The objective of the present study is to assess the safety and feasibility of the use of telemedicine-based services for surgical wound care and to measure patient satisfaction with telemedicine-based follow-up.24 patients were included, they were provided with a corporate mail address. On day 7 after surgery patients sent, via email, an image of their surgical wound together with a completed questionnaire...

article

Magnetic ionic liquids as extraction solvents in vacuum headspace single-drop microextraction

María J. Trujillo-Rodríguez, Verónica Pino, Jared L. Anderson

Talanta > 2017 > 172 > C > 86-94

A vacuum headspace single-drop microextraction method based on the use of magnetic ionic liquids (vacuum MIL-HS-SDME) for the determination of short chain free fatty acids is described for the first time. The basis of the method involves the use of a rod magnet to aid in maintaining a small microdroplet of magnetic ionic liquid (MIL) during headspace single-drop microextraction (HS-SDME). The application...

article

Non-conventional solvents in liquid phase microextraction and aqueous biphasic systems

Jiwoo An, María J. Trujillo-Rodríguez, Verónica Pino, Jared L. Anderson

Journal of Chromatography A > 2017 > 1500 > C > 1-23

The development of rapid, convenient, and high throughput sample preparation approaches such as liquid phase microextraction techniques have been continuously developed over the last decade. More recently, significant attention has been given to the replacement of conventional organic solvents used in liquid phase microextraction techniques in order to reduce toxic waste and to improve selectivity...

article

Gold nanoparticles based solid‐phase microextraction coatings for determining organochlorine pesticides in aqueous environmental samples

Adrián Gutiérrez‐Serpa, Priscilla Rocío‐Bautista, Verónica Pino, Francisco Jiménez‐Moreno, more

Journal of Separation Science > 40 > 9 > 2009 - 2021

The use of solid‐phase microextraction coatings based on gold nanoparticles was investigated, focusing the attention on the preparation of nanoparticles with nonclassical reduction agents of HAuCl₄ such as gallic acid and H₂O₂, rather than the conventional sodium citrate. All nanoparticles were characterized by diode array spectroscopy, whereas novel nanoparticles prepared with gallic acid and H₂O...

article

Metal-organic frameworks as novel sorbents in dispersive-based microextraction approaches

Priscilla Rocío-Bautista, Providencia González-Hernández, Verónica Pino, Jorge Pasán, more

TrAC Trends in Analytical Chemistry > 2017 > 90 > C > 114-134

This review provides a critical overview on the current state of the use of MOFs as sorbents in dispersive-based microextraction methods, not only classifying the different MOFs used in these methods and highlighting the advantages of these materials in terms of stability, analytical performance, and reuse in some cases; but also insightfully describing the analytical applications reported. A description...

article

Vacuum-assisted headspace-solid phase microextraction for determining volatile free fatty acids and phenols. Investigations on the effect of pressure on competitive adsorption phenomena in a multicomponent system

María J. Trujillo-Rodríguez, Verónica Pino, Elefteria Psillakis, Jared L. Anderson, more

Analytica Chimica Acta > 2017 > 962 > C > 41-51

This work proposes a new vacuum headspace solid-phase microextraction (Vac-HSSPME) method combined to gas chromatography-flame ionization detection for the determination of free fatty acids (FFAs) and phenols. All target analytes of the multicomponent solution were volatiles but their low Henry's Law constants rendered them amenable to Vac-HSSPME. The ability of a new and easy to construct Vac-HSSPME...

article

Effect of the inclusion of banana silage in the diet of goats on physicochemical and sensory characteristics of cheeses at different ripening times

Arturo A. Rincón, José M. García-Fraga, Sergio Álvarez, Verónica Pino, more

Small Ruminant Research > 2017 > 149 > C > 52-61

The utilization of agro-industrial byproducts into the diets of dairy goats is an alternative feeding covered in this study. The differences between the physicochemical and sensory characteristics were obtained for Canary Islands cheeses made with raw milk of goats fed with a control diet (CD) or with a banana silage-based diet (BD), and ripened at different times. Banana silage-based diets were:...

article

Are metal-organic frameworks able to provide a new generation of solid-phase microextraction coatings? – A review

Priscilla Rocío-Bautista, Idaira Pacheco-Fernández, Jorge Pasán, Verónica Pino

Analytica Chimica Acta > 2016 > 939 > C > 26-41

Solid-phase microextraction (SPME) is a powerful technique commonly used in sample preparation for extraction/preconcentration of analytes from a wide variety of samples. Among the trends in improving SPME applications, current investigations are focused on the development of novel coatings able to improve the extraction efficiency, sensitivity, and thermal and mechanical stability, within other properties,...

article

Utilization of highly robust and selective crosslinked polymeric ionic liquid-based sorbent coatings in direct-immersion solid-phase microextraction and high-performance liquid chromatography for determining polar organic pollutants in waters

Idaira Pacheco-Fernández, Ali Najafi, Verónica Pino, Jared L. Anderson, more

Talanta > 2016 > 158 > C > 125-133

Several crosslinked polymeric ionic liquid (PIL)-based sorbent coatings of different nature were prepared by UV polymerization onto nitinol wires. They were evaluated in a direct-immersion solid-phase microextraction (DI-SPME) method in combination with high-performance liquid chromatography (HPLC) and diode array detection (DAD). The studied PIL coatings contained either vinyl alkyl or vinylbenzyl...

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INFONA - science communication portal

Search results for: Verónica Pino

Metal–Organic Framework‐Coated Glass Vials: A Step Forward in Analytical Platforms (Adv. Funct. Mater. 36/2024)

Metal–Organic Framework‐Coated Glass Vials: A Step Forward in Analytical Platforms

SARS‐CoV‐2 infection and venous thromboembolism after surgery: an international prospective cohort study

Effects of pre‐operative isolation on postoperative pulmonary complications after elective surgery: an international prospective cohort study

Timing of surgery following SARS‐CoV‐2 infection: an international prospective cohort study

High‐throughput microscale extraction using ionic liquids and derivatives: A review

Braid solid-phase microextraction of polycyclic aromatic hydrocarbons by using fibers coated with silver-based nanomaterials in combination with HPLC with fluorometric detection

Silver nanoparticles supported onto a stainless steel wire for direct-immersion solid-phase microextraction of polycyclic aromatic hydrocarbons prior to their determination by GC-FID

Insights in the analytical performance of neat metal-organic frameworks in the determination of pollutants of different nature from waters using dispersive miniaturized solid-phase extraction and liquid chromatography

Salt-induced ionic liquid-based microextraction using a low cytotoxic guanidinium ionic liquid and liquid chromatography with fluorescence detection to determine monohydroxylated polycyclic aromatic hydrocarbons in urine

Anti-Acanthamoeba activity of Tunisian Thymus capitatus essential oil and organic extracts

Feasibility and safety of surgical wound remote follow-up by smart phone in appendectomy: A pilot study

Magnetic ionic liquids as extraction solvents in vacuum headspace single-drop microextraction

Non-conventional solvents in liquid phase microextraction and aqueous biphasic systems

Gold nanoparticles based solid‐phase microextraction coatings for determining organochlorine pesticides in aqueous environmental samples

Metal-organic frameworks as novel sorbents in dispersive-based microextraction approaches

Vacuum-assisted headspace-solid phase microextraction for determining volatile free fatty acids and phenols. Investigations on the effect of pressure on competitive adsorption phenomena in a multicomponent system

Effect of the inclusion of banana silage in the diet of goats on physicochemical and sensory characteristics of cheeses at different ripening times

Are metal-organic frameworks able to provide a new generation of solid-phase microextraction coatings? – A review

Utilization of highly robust and selective crosslinked polymeric ionic liquid-based sorbent coatings in direct-immersion solid-phase microextraction and high-performance liquid chromatography for determining polar organic pollutants in waters

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