Article
Chemistry, Analytical
Nutnaree Fukana, Thitaporn Sonsa-ard, Nattapong Chantipmanee, Peter C. Hauser, Prapin Wilairat, Duangjai Nacapricha
Summary: This work introduces a novel paper-based method for direct determination of sulfite, utilizing a capacitively coupled contactless conductivity detector (C4D) produced from printed-circuit board. The method offers a quick detection of SO2(g) in fruit juices, white and red wines, with a working range of 8-100 mg L-1 sulfite and a low limit of detection (6.61 mg L-1). Compared to other paper-based methods, it is the only in-situ method available, providing rapid results in 3.3 minutes per sample.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Shi-Hua Chen, Zong-Yin Song, Xiang-Yu Xiao, Hong-Qi Huang, Yuan-Fan Yang, Pei-Hua Li, Meng Yang, Xing-Jiu Huang
Summary: Vacancy and doping engineering were used to improve the electrocatalytic ability of nanomaterials for detecting heavy metal ions. The P-doped material showed enhanced sensitivity and selectivity towards As(III), and the vacancies provided abundant electrons to form active centers.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Wei Sun, Hanhan Xu, Shuqin Bao, Wenge Yang, Weiliang Shen, Guoxing Hu
Summary: Based on the nucleophilicity of sulfur dioxide derivatives, a reactive fluorescent probe with strong selectivity and low detection limit was designed and synthesized. The probe can rapidly identify sulfur dioxide derivatives and achieve excellent results in detection. Detection test paper and silica functional materials prepared based on the probe provide a potential direction for further commercialization.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Food Science & Technology
Yong Soo Cho, Jeong Jae Kim, Gyungyun Jeon, Myung-Sub Chung, Yongsung Joo, Kwang-Won Lee
Summary: This study analyzed the levels of total SO2 in fruit wines in South Korea and conducted risk assessment for SO2 exposure. The results showed that most South Koreans were ingesting a safe level of SO2 through wine intake, with only a limited percentage consuming high levels of SO2. Regular monitoring of high levels of SO2 in wine is recommended as a national concern.
Article
Food Science & Technology
Anna Tama, Grzegorz Bartosz, Izabela Sadowska-Bartosz
Summary: Polyphenols in wines autoxidize to produce hydrogen peroxide upon contact with air, with the net production influenced by both production and scavenging of hydrogen peroxide in the wine.
Article
Chemistry, Analytical
Ning Dang, Nader Djelidi, Gustavo Adrian Echeveste Salazar, Alain Walcarius, Liang Liu, Mathieu Etienne
Summary: An integrated probe for electrochemical analysis of small volume droplets was developed, offering reliable and reproducible measurements. By studying droplet systems mimicking atmospheric corrosion, interfacial corrosion reactions between droplets and substrate can be investigated.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Rahul S. Salunke, Yogesh T. Nakate, Ahmad Umar, Umesh T. Nakate, Rafiq Ahmad, Dhammanand J. Shirale
Summary: The sensor electrode with gold nanoparticles (AuNPs) functionalized single polypyrrole nanowire (PpyNW) showed high sensitivity and an ultra-low detection limit during arsenic (III) detection in solution.
SURFACES AND INTERFACES
(2021)
Article
Engineering, Environmental
Elena Boselli, Zhizhen Wu, Alexa Friedman, Birgit Claus Henn, Ian Papautsky
Summary: Manganese is essential for metabolism, but excessive exposure can lead to health issues. New miniature sensors for monitoring manganese levels in drinking water have shown high accuracy and precision compared to traditional methods.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Thi Kim Thuong Nguyen, Thi Huong Giang Le, Nhan Thi Thanh Pham, Thi Hoa Hoang, Ha Phuong Nguyen, Mua Xuan Nguyen, Minh Huong Giang Dang, Huy Hoang Do, Thi Thao Ta, Xuan Thanh Bui
Summary: In this study, a glassy carbon electrode modified with electrochemical reduced graphene oxide (ErGO/GCE) was used to determine amaranth in soft drink and candy samples by adsorptive stripping voltammetry. The ErGO/GCE was fabricated through an electrochemical reduction process, and the characteristics of the graphene oxide and reduced graphene oxide were studied. The optimal conditions for determining amaranth were determined, and the proposed method can be applied for amaranth dye analysis in food.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Vesna Antunovic, Tatjana Tripkovic, Biljana Tomasevic, Rada Baosic, Dijana Jelic, Aleksandar Lolic
Summary: This study utilized a Nafion-modified glassy carbon electrode and MnCo2O4 nanoparticles for the determination of Pb and Cu in anodic stripping voltammetry. The modified electrode showed enhanced sensitivity compared to the bare electrode, enabling successful detection of Pb and Cu in wine samples.
ANALYTICAL SCIENCES
(2021)
Article
Food Science & Technology
Alejandro Parra, Aroa Ovejas, Lucia Gonzalez-Arenzana, Ana Rosa Gutierrez, Isabel Lopez-Alfaro
Summary: This study developed a new liquid culture medium based on olfactometry for the preventive detection of microorganisms capable of generating acetic acid in wine. The medium is easy to use and does not require complex laboratory equipment, making it a valuable tool for wineries.
Article
Electrochemistry
Qiao Liu, Liang Liu, Michel Perdicakis, Alain Walcarius
Summary: This study presents a new approach to electrochemical stripping analysis, where the target analyte is indirectly analyzed based on the signal obtained from the counter electrode, using an ultramicroelectrode to take advantage of the polarization effect. By utilizing this method, the resolution of signals can be improved and background interference can be reduced, offering a new angle of electroanalysis.
ELECTROCHIMICA ACTA
(2021)
Review
Electrochemistry
Jiri Barek, Petr Smejkal
Summary: The aim of this article is to show that modern voltammetric methods can still be useful in practical laboratories and to express ideas on what researchers and university teachers should do to initiate a renaissance of voltammetric methods in analytical laboratories.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Chemistry, Applied
Parvin Begum, Liu Yang, Tatsuya Morozumi, Teruo Sone, Toshikazu Kawaguchi
Summary: This study aimed to measure pH and degradation of wines that were elec-trochemically analyzed using polyaniline (PANI) sensor. Gas chromatography (GC) and fourier transform infrared spectrometer (FT-IR) were also used. The results showed that acetaldehyde formation accelerated oxidation in wine, shifting peak currents and potentials to negative direction. The formation of acetaldehyde was confirmed by GC and FT-IR spectra.
Article
Chemistry, Analytical
Sayed A. M. Marzouk, Aisha R. Alyammahi, Pablo Fanjul-Bolado
Summary: This paper describes three novel cells for electrochemical measurements, offering convenient electrical connection, excellent SPEC sealing, and versatility for various applications with different sample volumes. Additionally, a new experimental method is presented.
ANALYTICAL CHEMISTRY
(2021)
Article
Biophysics
Patricia Rebelo, Estefania Costa-Rama, Isabel Seguro, Joao G. Pacheco, Henri P. A. Nouws, M. Natalia D. S. Cordeiro, Cristina Delerue-Matos
Summary: The increasing presence of contaminants in environmental waters poses a threat to both the environment and human health. Electrochemical sensing based on molecularly imprinted polymers (MIPs) offers a promising solution for detecting pharmaceuticals, pesticides, heavy metals, and other pollutants in water samples with high selectivity, sensitivity, and rapid response.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Biochemical Research Methods
Alnilan Lobato, Virginia Cruz Fernandes, Joao G. Pacheco, Cristina Delerue-Matos, Luis Moreira Goncalves
Summary: The study utilized gas-diffusion microextraction (GDME) system for direct extraction of organochlorine pesticides (OCPs) from milk samples, in combination with gas chromatography-electron capture detection (GC-ECD). Parameters such as extract volume, extraction time, and temperature were optimized, resulting in high coefficients of determination, low limits of detection, and satisfactory precision and recovery values.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Article
Chemistry, Analytical
Patricia Rebelo, Joao G. Pacheco, Iuliia V. Voroshylova, Andre Melo, M. Natalia D. S. Cordeiro, Cristina Delerue-Matos
Summary: In this study, an electrochemical molecularly imprinted polymer (MIP) sensor for the detection of ATV in water samples was developed. Computational studies were conducted to select a suitable functional monomer and investigate the template-monomer interaction. The sensor exhibited high sensitivity and selectivity, and was successfully applied in spiked water samples.
ANALYTICA CHIMICA ACTA
(2022)
Editorial Material
Chemistry, Analytical
Luis Moreira Goncalves
BRAZILIAN JOURNAL OF ANALYTICAL CHEMISTRY
(2021)
Article
Agriculture, Multidisciplinary
Liliana Cordeiro, Ana R. J. Cabrita, Hugo M. Oliveira, Margarida R. G. Maia, Jose A. Rodrigues, Antonio J. M. Fonseca, Ines M. Valente
Summary: A straightforward and versatile methodology for extracting volatile metabolites from biological samples of ruminants for gas chromatography analysis was proposed. The method was applied to determine multiclass metabolites in various samples collected from Holstein cows, and the concentrations of volatile metabolites in different biological samples were critically discussed. The proposed method can generate bioanalytical information that is relevant to ruminant's nutritional studies.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Chemistry, Analytical
Heitor Gabriel Martins Sposito, Alnilan Lobato, Nikola O. Tasic, Adriano O. Maldaner, Thiago R. L. C. Paixao, Luis Moreira Goncalves
Summary: This paper presents a highly selective molecularly-imprinted sensor to detect diltiazem in buffer and urine. The possibility of using this sensor as a forensic tool for fingerprinting street-seized cocaine samples of heterogeneous composition was investigated.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Patricia Rebelo, Joao G. Pacheco, Iuliia V. Voroshylova, Isabel Seguro, Maria Natalia D. S. Cordeiro, Cristina Delerue-Matos
Summary: A novel molecularly imprinted polymer (MIP) was developed for selective determination of citalopram (CTL), showing excellent performance, high imprinting factor, and environmental friendliness in spiked river water samples.
Article
Chemistry, Analytical
Isabel Seguro, Patricia Rebelo, Joao G. Pacheco, Cristina Delerue-Matos
Summary: In this study, a simple, reproducible, and low-cost electrochemical molecularly imprinted polymer (MIP) sensor was developed for the detection of trazodone. By combining electropolymerization and screen-printed electrodes, the sensor can be easily prepared and used for in situ analysis with portable devices. The results showed that the MIP sensor exhibited good selectivity and detection performance for trazodone, and it was successfully applied to the detection of trazodone in tap water samples and human serum.
Article
Food Science & Technology
Sandra Lopes Teixeira, Joao Rodrigo Santos, P. J. Almeida, J. A. Rodrigues
Summary: This study investigated the volatile carbonyl compounds in roasted coffee and identified twenty different compounds. Various types of beans, including healthy beans and defective beans (such as black, immature, sour and bored) from arabica and robusta species, were roasted at different intensities. Furfural was found to be the main indicator of healthy beans.
Article
Chemistry, Multidisciplinary
Bruna Bossard, Renata Antunes Grothe, Alisson Bezerra Martins, Alnilan Lobato, Nikola Tasic, Thiago R. L. C. Paixao, Luis Moreira Goncalves
Summary: In this proof-of-concept study, laser-pyrolyzed paper was used as supporting electrodes for the swift, impedimetric, and enzymeless detection of D-glucose using molecularly imprinted polymer. The results showed good analytical performance, reproducibility, and selectivity.
MONATSHEFTE FUR CHEMIE
(2022)
Article
Chemistry, Analytical
Karen C. A. Francisco, Alnilan Lobato, Nikola Tasic, Arnaldo A. Cardoso, Luis M. Goncalves
Summary: In this study, a method combining salting-out assisted liquid-liquid extraction (SALLE) and an electropolymerized molecularly imprinted polymer (e-MIP) was developed for the detection and quantification of HMF in coffee samples. The advantages of this method include simplicity, easy operation, good selectivity and sensitivity, low cost, and minimal use of organic solvents.
Article
Plant Sciences
Mafalda Pinto, Cristiano Soares, Ruth Pereira, Jose Antonio Rodrigues, Fernanda Fidalgo, Ines Maria Valente
Summary: Aqueous extracts from Eucalyptus globulus leaves contain a wide variety of specialized metabolites with diverse biological activities. Previous studies have mainly focused on extracts from mature leaves, while the composition of extracts from young eucalyptus leaves is still unclear. There is also no consensus on whether fresh or dried leaves should be used for extraction to obtain the highest recovery of biologically active compounds.
FRONTIERS IN PLANT SCIENCE
(2022)
Review
Biochemistry & Molecular Biology
Renato Caldevilla, Stephanie L. Morais, Agostinho Cruz, Cristina Delerue-Matos, Fernando Moreira, Joao G. Pacheco, Marlene Santos, Maria Fatima Barroso
Summary: Major depressive disorder is commonly treated with antidepressants, but some patients have adverse reactions or inadequate response to treatment. Analytical chromatographic techniques can investigate medication complications, including those associated with antidepressants, but have limitations. Electrochemical (bio)sensors have gained attention due to their cost-effectiveness, portability, and precision. They can be used to monitor antidepressant levels and provide accurate results for personalized treatment and improved patient outcomes.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Chemistry, Analytical
Patricia Rebelo, Isabel Seguro, Henri P. A. Nouws, Cristina Delerue-Matos, Joao G. Pacheco
Summary: The scarcity of clean water leads to the exploration of using treated wastewater. Monitoring campaigns have found emerging contaminants present in trace amounts, including pharmaceuticals, pesticides, and personal care products. Plasmonic sensors with molecularly imprinted polymers (MIPs) offer a potential solution for monitoring analytes in water samples, providing higher sensitivity and fast response through miniaturization. This work provides an overview of MIP-based plasmonic sensors, focusing on the fabrication/recognition procedure and the use of metals and nanomaterials to enhance sensor performance.
Article
Chemistry, Analytical
Renata A. Grothe, Alnilan Lobato, Bassim Mounssef, Nikola Tasi, Ataualpa A. C. Braga, Adriano O. Maldaner, Leigh Aldous, Thiago R. L. C. Paixao, Luis Moreira Goncalves
Summary: A novel electroanalytical method was developed using electropolymerized molecularly imprinted polymers for the determination and 'fingerprinting' of benzocaine in cocaine samples. This approach successfully achieved molecular recognition with a low detection limit in genuine cocaine samples.
