Showing papers in "Analytica Chimica Acta in 2021"

TL;DR: The typical synthesis methods for BP-based crystals, nanosheets, and quantum dots are discussed in detail; the degradation of BP under ambient conditions is introduced; and state-of-the-art protection methodologies for enhancing BP stability are explored.

TL;DR: This review provides an overview over a typical multi-omics workflow, focusing on integration methods that have the potential to combine metabolomics data with two or more omics, including data-driven, knowledge-based, simultaneous and step-wise approaches.

TL;DR: The theoretical core of the MCR methodology is deeply understood due to the thorough studies about the ambiguity phenomenon, and the adaptation of the method to new analytical measurements and scientific domains is continuous.

TL;DR: In this article, the colorimetric and electrochemical detection of SARS-CoV-2 spike antigen with gold nanoparticle-based biosensors may be one such method.

TL;DR: In the last few years, LIBS has become an established technique for the assessment of elemental concentrations in various sample types as discussed by the authors, since this technique allows to associate the obtained elemental composition information with the spatial coordinates of the investigated sample.

TL;DR: The role of different nano and micro sorbent materials employed in the extraction of PAHs are critically evaluated and carbon-based nanomaterials, metal-organic frameworks, polymeric nanocomposites, ionic-liquid based composites, and silica-based materials are explicitly covered.

TL;DR: Rolling circle amplification (RCA) as discussed by the authors is an efficient enzymatic isothermal reaction that using circular probe as a template to generate long tandem single-stranded DNA or RNA products under the initiation of short DNA/RNA primers.

TL;DR: In this article, an overview of the progress in the research of semiconductor quantum dots for application in chemical gas sensors is provided, along with the achievements and issues that are important for future studies.

TL;DR: The role of gold nanoparticles to improve the sensitivity and specificity of ELISA, PCR and immuno-PCR assays is focused on.

TL;DR: In this paper, a multivariate scheme enabled by polyphenolic chemistry for the green synthesis, facile stabilization (functionalization), protective encapsulation, and bio-affinitive design of metal-phenolic networks (MPNs)-encapsulated silver SERS nanotags (AgNPs@4-mercaptobenzonitrile@MPNs).

TL;DR: In this paper, a tutorial review aimed to serve as a first step for junior researchers considering integrating artificial intelligence into their programs is presented, followed by a critical assessment of representative reports integrating AI with various sensors, spectroscopies, and separation techniques.

TL;DR: In this article, an overview on QEPAS technique, highlighting merits and drawbacks, aims at providing ready-to-use guidelines for multi-gas detection in a wide range of applications and operating conditions.

TL;DR: In this paper, the faecal metabolome of COVID-19 patients was analyzed using gas chromatography-mass spectrometry, and Spearman's correlation analyses of clinical features, the serum metabolome, and the Faecal micro- and mycobiota were conducted.

TL;DR: In this article, a review article describes the advancements achieved in the last five years regarding electrochemical biosensors for the diagnosis of viral infections, as well as point of care systems and their advantages when compared to traditional techniques.

TL;DR: The potential of MXene-based sorbents for analytical extractions is highlighted based on the current literature that describes their applications in adsorptive removal and environmental remediation.

TL;DR: A novel dual-emission ratiometric fluorescent sensor has been synthesized successfully by encapsulating water-soluble fluorescent CDs into the chambers of Eu-MOFs via a simple one-pot hydrothermal method, which can be used for the detection of Hg2+ in environmental water samples.

TL;DR: In this paper, a magnetically assisted surface enhanced Raman scattering (SERS)-label immunoassay was proposed for the sensitive detection of bacteria by using a universal approach based on free antibody labelling and staphylococcus proteins A (PA)-SERS tags orientation recognition.

TL;DR: Five of the most common polymers employed worldwide for packaging were weathered in a pilot-scale system simulating dry and marine conditions for more than 10 weeks, and showed that an individual study of each polymer is necessary since degradation pathways and products depend on the polymer type.

TL;DR: Unexpectedly, mixtures of coumarin and thymol were highly efficient SLMs, and provided exhaustive or near-exhaustive extraction of non-polar bases, non-Polar acids, and polar bases, in a large polarity window, not found in current literature.

TL;DR: This review summarizes the state of the art of the main electrochemical sensors and biosensors, instrumental techniques, and sample preparation used for the development of analytical methods, published in the last five years, for the monitoring of different classes of antibiotics in milk samples.

TL;DR: This review discusses the incorporation of signal amplification techniques in three kinds of CRISPR/Cas-based biosensing systems (Cas9, Cas12 and Cas13-based ones) and the signal output modes used by these biosensors.

TL;DR: The strengths, weaknesses, opportunities and threats of point of need and portable devices have been identified and critically compared with chromatographic methods coupled to mass chromatography.

TL;DR: Though there is much progress on assay development, it is argued that the largest roadblock to deployment exists in sample preparation, and a set of requirements to heed when designing point-of-care diagnostic technologies to address the testing needs of a pandemic is recommended.

TL;DR: Different gold nanostructures that have been exploited for SERS analysis are described, ranging from gold nanospheres to anisotropic and complex-shaped gold nanstructures, in which the presence of high aspect ratio features leads to an increment of the electromagnetic field at the surface of the nanomaterial, resulting in enhanced SERS response.

TL;DR: Hydrophilic media represent a promising alternative since the water-miscibility of these substances increases the mass transfer of the analytes to the extraction media, leading to higher extraction efficiencies, and aims to classify these methods in order to clarify the confusing terminology used for some of the strategies.

TL;DR: The potential reproducibility of solid contact ion-selective electrodes (SC-ISEs) has been extensively studied in the field of ion sensing as they offer the possibility of miniaturization, are relatively inexpensive in comparison to other analytical techniques and allow straightforward and routine analyses of ions in a number of clinical, environmental and industrial process samples as mentioned in this paper.

TL;DR: This review gives an overview of miniature DBD application in analytical atomic spectrometry, starting with an introduction to its geometrical configuration and ionization mechanisms.

TL;DR: In this article, the effect of cationic surfactant, CTAB was demonstrated on the enhanced accumulation of favipiravir at the surface of cathodically pretreated boron-doped diamond (CPT-BDD) electrode.

TL;DR: In this article, a 3D conductive filament of carbon black and polylactic acid (PLA) was used to detect Hantavirus Araucaria nucleoprotein (Np) as a proof-of-concept.

TL;DR: This work systematically and comprehensively review the walking principles of various DNA walkers and the recent progress on multiple dimensional tracks by presenting representative examples and an insightful discussion and outlines the challenges and future trends of DNA walker machines in emerging analytical fields.