Enginyeria Química i Química Analítica: Recent submissions
Now showing items 401-420 of 791
Commercial screen-printed electrodes based on carbon nanomaterials for a fast and cost-effective voltammetric determination of paracetamol, ibuprofen and caffeine in water samples
Carbon screen-printed electrode (SPCE), multi-walled carbon nanotubes modified screen-printed electrode (SPCNTE), carbon nanofibers modified screen-printed electrode (SPCNFE), and graphene modified screen-printed electrode ...
Phenolic Composition, Antioxidant Capacity and Antiproliferative Activity of Ten Exotic Amazonian fruit
The socioeconomic, cultural, therapeutic, and nutritional potential of Amazonian fruits has been limited due to the scarce information about its phytochemical profile. The aim of this study was to determine the total ...
Adsorption of benzophenone-3 and octocrylene UV filters on polyethylene:analysis by HPLC-MS/MS and voltammetry with screen-printed electrodes
Microplastics (MPs) are persistent pollutants that can adsorb contaminants, facilitating their accumulation inaquatic ecosystems. The presence of UV filters (UVFs) such as benzophenone-3 (BP3) and octocrylene (OC),exacerbates ...
Co-digestion of sewage sludge and food waste in a wastewater treatment plant based on mainstream anaerobic membrane bioreactor technology: A techno-economic evaluation
The implementation of anaerobic membrane bioreactor as mainstream technology would reduce the load of sidestream anaerobic digesters. This research evaluated the techno-economic implications of co-digesting sewage sludge ...
On-line aptamer affinity solid-phase extraction direct mass spectrometry for the rapid analysis of α-synuclein in blood
On-line aptamer affinity solid-phase extraction direct mass spectrometry (AA-SPE-MS) is presented for the rapid purification, preconcentration, and characterization of α-synuclein (α-syn), which is a protein biomarker ...
Mercury films on commercial carbon screen-printed devices for the analysis of heavy metal ions: a critical evaluation
The suitability of mercury films on commercial screen-printed electrodes for the analysis of heavy metal ions is critically tested for the particular case of Pb(II)-ions. Although determination is possible by anodic stripping ...
El residu: paràbola de la maionesa i l'allioli
...I posant-se enmig dels seus deixebles, els va proposar aquesta paràbola: El regne dels homes és semblant a un jove príncep que heretà un palau i, per celebrar-ho, preparà un gran banquet per a tots els seus amics. Disposà ...
Antimony speciation in spirits stored in PET bottles: identification of a novel antimony complex
Total antimony and its +V and +III oxidation state species were determined in twelve spirit samples (Greek raki and tsipouro) stored in polyethylene terephthalate bottles. Reliable and reproducible results were obtained ...
Treatment of Diphenhydramine with diferent AOPs including photo-Fenton at circumneutral pH.
The degradation of diphenhydramine hydrochloride (DPH), via UV-vis/H2O2, Fenton, photo-Fenton and photocatalysis processes, was studied under different radiation sources. In addition, the Fenton and photo-Fenton processes ...
Targeted HPLC-UV Polyphenolic profiling to detect and quantify adulterated tea samples by chemometrics
Tea can be found among the most widely consumed beverages, but also highly susceptible of fraudulent practices by adulteration, with other plants such as chicory, to obtain an illicit economic gain. The development of ...
Artomics: A holistic approach to the study of artworks integrating their compositional and formal characteristics. Application on the Liber Feudorum Maior
A novel analytical approach which combines the compositional and formal characteristics describing groups of artworks and their analysis using multivariate techniques is presented, under the title of Artomics. This approach ...
Application of solar-based oxidation to the management of empty pesticide container rinse water in Bolivia
Background: The management of empty pesticide containers (EPC) in Bolivia has been recently promoted as a control strategy for dispersed pollution in surface and underground water bodies, as well as in soil. It comprises ...
Characterization and classification of Spanish honeydew and blossom honeys based on their antioxidant capacity
Honey is a very appreciated product for its nutritional characteristics and its benefits for human health, comprising antioxidant, anti-inflammatory, antifungal, and antibacterial activities. These attributes depend on the ...
Mixtures of chelating agents to enhance photo-Fenton process at natural pH: Influence of wastewater matrix on micropollutant removal and bacterial inactivation
Three organic fertilizers (EDTA (Ethylenedinitrilotetraacetic acid), EDDS (Ethylenediamine-N, N′-disuccinic acid) and DTPA (Diethylene triamine pentaacetic acid)) were tested as Fe-complexes in photo-Fenton process at ...
Porphyrin binding mechanism is altered by protonation at the loops in G-quadruplex DNA formed near the transcriptional activation site of the human c-kit gene
Background G-quadruplex DNA structures are hypothesized to be involved in the regulation of gene expression and telomere homeostasis. The development of small molecules that modulate the stability of G-quadruplex structures ...
Simplified screening approach of anabolic steroid esters using a compact atmospheric solid analysis probe mass spectrometric system
Due to the absence of chromatographic separation, ambient ionization mass spectrometry had the potential to improve the throughput of control laboratories in the last decades and will soon be an excellent approach for ...
Estimation of the octanol-water distribution coefficient of acidic compounds by microemulsion electrokinetic chromatography
The feasibility of extending the determination of the lipophilicity of partially ionized acids (log Do/w) by microemulsion electrokinetic chromatography (MEEKC) is tested. Theoretical considerations predict that a linear ...
Meat authentication based on animal species and other quality meat attributes (protected geographical indication, organic production, and Halal and Kosher products) by HPLC-UV fingerprinting and chemometrics
A simple and economic high-performance liquid chromatography with UV-vis detection (HPLC-UV) metabolomic fingerprinting methodology was developed and applied after a water extraction procedure to obtain sample chemical ...
Extraction and characterization of flavanol-rich nutraceuticals based on high-performance liquid chromatography
Flavanols are a class of polyphenols that have become the focus of much research because of their medicinal properties. For this paper, a new method to determine polyphenols in nutraceutical samples was developed, based ...
Effects of inorganic nitrogen (NH4Cl) and biodegradable organic carbon (CH3COONa) additions on a pilot-scale seawater biofilter
Biofilters degrade only a small fraction of the natural organic matter (NOM) contained in seawater which is the leading cause of biofouling in downstream processes. This work studies the effects of chemical additions on ...
